Diego Garcia weather by month

Check out Diego Garcia weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Diego Garcia (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
30°C maximum daytime temperature in January in Diego Garcia30
31°C maximum daytime temperature in February in Diego Garcia31
31°C maximum daytime temperature in March in Diego Garcia31
31°C maximum daytime temperature in April in Diego Garcia31
30°C maximum daytime temperature in May in Diego Garcia30
29°C maximum daytime temperature in June in Diego Garcia29
29°C maximum daytime temperature in July in Diego Garcia29
29°C maximum daytime temperature in August in Diego Garcia29
29°C maximum daytime temperature in September in Diego Garcia29
29°C maximum daytime temperature in October in Diego Garcia29
30°C maximum daytime temperature in November in Diego Garcia30
30°C maximum daytime temperature in December in Diego Garcia30
Min temperature (night-time)
25°C minimum night-time temperature in January in Diego Garcia25
25°C minimum night-time temperature in February in Diego Garcia25
26°C minimum night-time temperature in March in Diego Garcia26
26°C minimum night-time temperature in April in Diego Garcia26
25°C minimum night-time temperature in May in Diego Garcia25
25°C minimum night-time temperature in June in Diego Garcia25
24°C minimum night-time temperature in July in Diego Garcia24
24°C minimum night-time temperature in August in Diego Garcia24
24°C minimum night-time temperature in September in Diego Garcia24
25°C minimum night-time temperature in October in Diego Garcia25
25°C minimum night-time temperature in November in Diego Garcia25
25°C minimum night-time temperature in December in Diego Garcia25
Heat & Humidity
High heat & humidity in January in Diego GarciaH
High heat & humidity in February in Diego GarciaH
Very high heat & humidity in March in Diego GarciaVH
Very high heat & humidity in April in Diego GarciaVH
High heat & humidity in May in Diego GarciaH
High heat & humidity in June in Diego GarciaH
Moderate heat & humidity in July in Diego GarciaM
Moderate heat & humidity in August in Diego GarciaM
High heat & humidity in September in Diego GarciaH
High heat & humidity in October in Diego GarciaH
High heat & humidity in November in Diego GarciaH
High heat & humidity in December in Diego GarciaH
Sea temperature
29°C sea temperature in January in Diego Garcia29
28°C sea temperature in February in Diego Garcia28
29°C sea temperature in March in Diego Garcia29
29°C sea temperature in April in Diego Garcia29
28°C sea temperature in May in Diego Garcia28
27°C sea temperature in June in Diego Garcia27
27°C sea temperature in July in Diego Garcia27
26°C sea temperature in August in Diego Garcia26
27°C sea temperature in September in Diego Garcia27
28°C sea temperature in October in Diego Garcia28
28°C sea temperature in November in Diego Garcia28
29°C sea temperature in December in Diego Garcia29

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Diego Garcia

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of daylight
12 hours of daylight per day in January in Diego Garcia12
12 hours of daylight per day in February in Diego Garcia12
12 hours of daylight per day in March in Diego Garcia12
12 hours of daylight per day in April in Diego Garcia12
12 hours of daylight per day in May in Diego Garcia12
12 hours of daylight per day in June in Diego Garcia12
12 hours of daylight per day in July in Diego Garcia12
12 hours of daylight per day in August in Diego Garcia12
12 hours of daylight per day in September in Diego Garcia12
12 hours of daylight per day in October in Diego Garcia12
12 hours of daylight per day in November in Diego Garcia12
13 hours of daylight per day in December in Diego Garcia13
UV Index (Maximum)
UV (maximum) index 11+ (Extreme) in January in Diego Garcia11
UV (maximum) index 11+ (Extreme) in February in Diego Garcia11
UV (maximum) index 11+ (Extreme) in March in Diego Garcia11
UV (maximum) index 11+ (Extreme) in April in Diego Garcia11
UV (maximum) index 11 (Extreme) in May in Diego Garcia11
UV (maximum) index 10 (Very High) in June in Diego Garcia10
UV (maximum) index 10 (Very High) in July in Diego Garcia10
UV (maximum) index 11+ (Extreme) in August in Diego Garcia11
UV (maximum) index 11+ (Extreme) in September in Diego Garcia11
UV (maximum) index 11+ (Extreme) in October in Diego Garcia11
UV (maximum) index 11+ (Extreme) in November in Diego Garcia11
UV (maximum) index 11+ (Extreme) in December in Diego Garcia11

Rainfall in Diego Garcia

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
16 days with some rainfall in January in Diego Garcia16
14 days with some rainfall in February in Diego Garcia14
15 days with some rainfall in March in Diego Garcia15
15 days with some rainfall in April in Diego Garcia15
16 days with some rainfall in May in Diego Garcia16
14 days with some rainfall in June in Diego Garcia14
14 days with some rainfall in July in Diego Garcia14
14 days with some rainfall in August in Diego Garcia14
16 days with some rainfall in September in Diego Garcia16
18 days with some rainfall in October in Diego Garcia18
17 days with some rainfall in November in Diego Garcia17
17 days with some rainfall in December in Diego Garcia17
Average monthly rainfall (mm)
291 mm monthly rainfall in January in Diego Garcia291
248 mm monthly rainfall in February in Diego Garcia248
195 mm monthly rainfall in March in Diego Garcia195
171 mm monthly rainfall in April in Diego Garcia171
164 mm monthly rainfall in May in Diego Garcia164
138 mm monthly rainfall in June in Diego Garcia138
143 mm monthly rainfall in July in Diego Garcia143
152 mm monthly rainfall in August in Diego Garcia152
228 mm monthly rainfall in September in Diego Garcia228
245 mm monthly rainfall in October in Diego Garcia245
201 mm monthly rainfall in November in Diego Garcia201
254 mm monthly rainfall in December in Diego Garcia254

More about the Diego Garcia

Diego Garcia by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for British Indian Ocean Territory, represented by Diego Garcia, (Diego Garcia) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Diego Garcia?

Diego Garcia has a hot tropical climate with no dry season.

Diego Garcia weather in January

Expect daytime maximum temperatures of 30°C in Diego Garcia, British Indian Ocean Territory in January and high heat and humidity based on long-term weather averages. There are 16 days with some rainfall and typically 291 mm of rainfall in the month.

  • 30°C maximum daytime temperature in January in Diego Garcia30
    30°C max day temperature
  • 16 days with some rainfall in January in Diego Garcia16
    16 days with some rainfall
  • 25°C minimum night-time temperature in January in Diego Garcia25
    25°C min night temperature
  • 12 hours of daylight per day in January in Diego Garcia12
    12 hours of daylight per day
  • High heat & humidity in January in Diego GarciaH
    High heat & humidity
  • 291 mm monthly rainfall in January in Diego Garcia291
    291 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in Diego Garcia11
    11+ (Extreme) UV index
  • 29°C sea temperature in January in Diego Garcia29
    29°C sea temperature

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Diego Garcia weather in February

Expect daytime maximum temperatures of 31°C in Diego Garcia, British Indian Ocean Territory in February and high heat and humidity based on long-term weather averages. There are 14 days with some rainfall and typically 248 mm of rainfall in the month.

  • 31°C maximum daytime temperature in February in Diego Garcia31
    31°C max day temperature
  • 14 days with some rainfall in February in Diego Garcia14
    14 days with some rainfall
  • 25°C minimum night-time temperature in February in Diego Garcia25
    25°C min night temperature
  • 12 hours of daylight per day in February in Diego Garcia12
    12 hours of daylight per day
  • High heat & humidity in February in Diego GarciaH
    High heat & humidity
  • 248 mm monthly rainfall in February in Diego Garcia248
    248 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in February in Diego Garcia11
    11+ (Extreme) UV index
  • 28°C sea temperature in February in Diego Garcia28
    28°C sea temperature

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Diego Garcia weather in March

Expect daytime maximum temperatures of 31°C in Diego Garcia, British Indian Ocean Territory in March and very high heat and humidity based on long-term weather averages. There are 15 days with some rainfall and typically 195 mm of rainfall in the month.

  • 31°C maximum daytime temperature in March in Diego Garcia31
    31°C max day temperature
  • 15 days with some rainfall in March in Diego Garcia15
    15 days with some rainfall
  • 26°C minimum night-time temperature in March in Diego Garcia26
    26°C min night temperature
  • 12 hours of daylight per day in March in Diego Garcia12
    12 hours of daylight per day
  • Very high heat & humidity in March in Diego GarciaVH
    Very High heat & humidity
  • 195 mm monthly rainfall in March in Diego Garcia195
    195 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in March in Diego Garcia11
    11+ (Extreme) UV index
  • 29°C sea temperature in March in Diego Garcia29
    29°C sea temperature

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Diego Garcia weather in April

Expect daytime maximum temperatures of 31°C in Diego Garcia, British Indian Ocean Territory in April and very high heat and humidity based on long-term weather averages. There are 15 days with some rainfall and typically 171 mm of rainfall in the month.

  • 31°C maximum daytime temperature in April in Diego Garcia31
    31°C max day temperature
  • 15 days with some rainfall in April in Diego Garcia15
    15 days with some rainfall
  • 26°C minimum night-time temperature in April in Diego Garcia26
    26°C min night temperature
  • 12 hours of daylight per day in April in Diego Garcia12
    12 hours of daylight per day
  • Very high heat & humidity in April in Diego GarciaVH
    Very High heat & humidity
  • 171 mm monthly rainfall in April in Diego Garcia171
    171 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in April in Diego Garcia11
    11+ (Extreme) UV index
  • 29°C sea temperature in April in Diego Garcia29
    29°C sea temperature

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Diego Garcia weather in May

Expect daytime maximum temperatures of 30°C in Diego Garcia, British Indian Ocean Territory in May and high heat and humidity based on long-term weather averages. There are 16 days with some rainfall and typically 164 mm of rainfall in the month.

  • 30°C maximum daytime temperature in May in Diego Garcia30
    30°C max day temperature
  • 16 days with some rainfall in May in Diego Garcia16
    16 days with some rainfall
  • 25°C minimum night-time temperature in May in Diego Garcia25
    25°C min night temperature
  • 12 hours of daylight per day in May in Diego Garcia12
    12 hours of daylight per day
  • High heat & humidity in May in Diego GarciaH
    High heat & humidity
  • 164 mm monthly rainfall in May in Diego Garcia164
    164 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in May in Diego Garcia11
    11 (Extreme) UV index
  • 28°C sea temperature in May in Diego Garcia28
    28°C sea temperature

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Diego Garcia weather in June

Expect daytime maximum temperatures of 29°C in Diego Garcia, British Indian Ocean Territory in June and high heat and humidity based on long-term weather averages. There are 14 days with some rainfall and typically 138 mm of rainfall in the month.

  • 29°C maximum daytime temperature in June in Diego Garcia29
    29°C max day temperature
  • 14 days with some rainfall in June in Diego Garcia14
    14 days with some rainfall
  • 25°C minimum night-time temperature in June in Diego Garcia25
    25°C min night temperature
  • 12 hours of daylight per day in June in Diego Garcia12
    12 hours of daylight per day
  • High heat & humidity in June in Diego GarciaH
    High heat & humidity
  • 138 mm monthly rainfall in June in Diego Garcia138
    138 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in June in Diego Garcia10
    10 (Very High) UV index
  • 27°C sea temperature in June in Diego Garcia27
    27°C sea temperature

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Diego Garcia weather in July

Expect daytime maximum temperatures of 29°C in Diego Garcia, British Indian Ocean Territory in July based on long-term weather averages. There are 14 days with some rainfall and typically 143 mm of rainfall in the month.

  • 29°C maximum daytime temperature in July in Diego Garcia29
    29°C max day temperature
  • 14 days with some rainfall in July in Diego Garcia14
    14 days with some rainfall
  • 24°C minimum night-time temperature in July in Diego Garcia24
    24°C min night temperature
  • 12 hours of daylight per day in July in Diego Garcia12
    12 hours of daylight per day
  • Moderate heat & humidity in July in Diego GarciaM
    Moderate heat & humidity
  • 143 mm monthly rainfall in July in Diego Garcia143
    143 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in July in Diego Garcia10
    10 (Very High) UV index
  • 27°C sea temperature in July in Diego Garcia27
    27°C sea temperature

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Diego Garcia weather in August

Expect daytime maximum temperatures of 29°C in Diego Garcia, British Indian Ocean Territory in August based on long-term weather averages. There are 14 days with some rainfall and typically 152 mm of rainfall in the month.

  • 29°C maximum daytime temperature in August in Diego Garcia29
    29°C max day temperature
  • 14 days with some rainfall in August in Diego Garcia14
    14 days with some rainfall
  • 24°C minimum night-time temperature in August in Diego Garcia24
    24°C min night temperature
  • 12 hours of daylight per day in August in Diego Garcia12
    12 hours of daylight per day
  • Moderate heat & humidity in August in Diego GarciaM
    Moderate heat & humidity
  • 152 mm monthly rainfall in August in Diego Garcia152
    152 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Diego Garcia11
    11+ (Extreme) UV index
  • 26°C sea temperature in August in Diego Garcia26
    26°C sea temperature

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Diego Garcia weather in September

Expect daytime maximum temperatures of 29°C in Diego Garcia, British Indian Ocean Territory in September and high heat and humidity based on long-term weather averages. There are 16 days with some rainfall and typically 228 mm of rainfall in the month.

  • 29°C maximum daytime temperature in September in Diego Garcia29
    29°C max day temperature
  • 16 days with some rainfall in September in Diego Garcia16
    16 days with some rainfall
  • 24°C minimum night-time temperature in September in Diego Garcia24
    24°C min night temperature
  • 12 hours of daylight per day in September in Diego Garcia12
    12 hours of daylight per day
  • High heat & humidity in September in Diego GarciaH
    High heat & humidity
  • 228 mm monthly rainfall in September in Diego Garcia228
    228 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Diego Garcia11
    11+ (Extreme) UV index
  • 27°C sea temperature in September in Diego Garcia27
    27°C sea temperature

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Diego Garcia weather in October

Expect daytime maximum temperatures of 29°C in Diego Garcia, British Indian Ocean Territory in October and high heat and humidity based on long-term weather averages. There are 18 days with some rainfall and typically 245 mm of rainfall in the month.

  • 29°C maximum daytime temperature in October in Diego Garcia29
    29°C max day temperature
  • 18 days with some rainfall in October in Diego Garcia18
    18 days with some rainfall
  • 25°C minimum night-time temperature in October in Diego Garcia25
    25°C min night temperature
  • 12 hours of daylight per day in October in Diego Garcia12
    12 hours of daylight per day
  • High heat & humidity in October in Diego GarciaH
    High heat & humidity
  • 245 mm monthly rainfall in October in Diego Garcia245
    245 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in October in Diego Garcia11
    11+ (Extreme) UV index
  • 28°C sea temperature in October in Diego Garcia28
    28°C sea temperature

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Diego Garcia weather in November

Expect daytime maximum temperatures of 30°C in Diego Garcia, British Indian Ocean Territory in November and high heat and humidity based on long-term weather averages. There are 17 days with some rainfall and typically 201 mm of rainfall in the month.

  • 30°C maximum daytime temperature in November in Diego Garcia30
    30°C max day temperature
  • 17 days with some rainfall in November in Diego Garcia17
    17 days with some rainfall
  • 25°C minimum night-time temperature in November in Diego Garcia25
    25°C min night temperature
  • 12 hours of daylight per day in November in Diego Garcia12
    12 hours of daylight per day
  • High heat & humidity in November in Diego GarciaH
    High heat & humidity
  • 201 mm monthly rainfall in November in Diego Garcia201
    201 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in November in Diego Garcia11
    11+ (Extreme) UV index
  • 28°C sea temperature in November in Diego Garcia28
    28°C sea temperature

Back to months

Diego Garcia weather in December

Expect daytime maximum temperatures of 30°C in Diego Garcia, British Indian Ocean Territory in December and high heat and humidity based on long-term weather averages. There are 17 days with some rainfall and typically 254 mm of rainfall in the month.

  • 30°C maximum daytime temperature in December in Diego Garcia30
    30°C max day temperature
  • 17 days with some rainfall in December in Diego Garcia17
    17 days with some rainfall
  • 25°C minimum night-time temperature in December in Diego Garcia25
    25°C min night temperature
  • 13 hours of daylight per day in December in Diego Garcia13
    13 hours of daylight per day
  • High heat & humidity in December in Diego GarciaH
    High heat & humidity
  • 254 mm monthly rainfall in December in Diego Garcia254
    254 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in December in Diego Garcia11
    11+ (Extreme) UV index
  • 29°C sea temperature in December in Diego Garcia29
    29°C sea temperature

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More about the Diego Garcia

Diego Garcia by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for British Indian Ocean Territory, represented by Diego Garcia, (Diego Garcia) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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Tropical storm risk: Diego Garcia, British Indian Ocean Territory cyclone season

% of month affected by tropical storms
1.3%
0
0
0
0
0
0
0
<1%
1.5%
2.1%
1.5%
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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Compare Diego Garcia with the UK

Below the Diego Garcia chart shows average maximum daytime temperature for Diego Garcia, British Indian Ocean Territory and the UK (London).

Maximum daytime temperature (°C)

Diego Garcia, British Indian Ocean Territory
UK (London)
30
7
31
7
31
10
31
13
30
17
29
20
29
22
29
22
29
19
29
15
30
10
30
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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