Kalutara weather by month

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

Temperature in Kalutara (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
31°C maximum daytime temperature in January in Kalutara31
31°C maximum daytime temperature in February in Kalutara31
31°C maximum daytime temperature in March in Kalutara31
32°C maximum daytime temperature in April in Kalutara32
31°C maximum daytime temperature in May in Kalutara31
30°C maximum daytime temperature in June in Kalutara30
30°C maximum daytime temperature in July in Kalutara30
30°C maximum daytime temperature in August in Kalutara30
30°C maximum daytime temperature in September in Kalutara30
30°C maximum daytime temperature in October in Kalutara30
30°C maximum daytime temperature in November in Kalutara30
30°C maximum daytime temperature in December in Kalutara30
Min temperature (night-time)
22°C minimum night-time temperature in January in Kalutara22
23°C minimum night-time temperature in February in Kalutara23
24°C minimum night-time temperature in March in Kalutara24
24°C minimum night-time temperature in April in Kalutara24
25°C minimum night-time temperature in May in Kalutara25
25°C minimum night-time temperature in June in Kalutara25
25°C minimum night-time temperature in July in Kalutara25
25°C minimum night-time temperature in August in Kalutara25
25°C minimum night-time temperature in September in Kalutara25
24°C minimum night-time temperature in October in Kalutara24
23°C minimum night-time temperature in November in Kalutara23
23°C minimum night-time temperature in December in Kalutara23
Heat & Humidity
High heat & humidity in January in KalutaraH
High heat & humidity in February in KalutaraH
Very high heat & humidity in March in KalutaraVH
Very high heat & humidity in April in KalutaraVH
Very high heat & humidity in May in KalutaraVH
High heat & humidity in June in KalutaraH
High heat & humidity in July in KalutaraH
High heat & humidity in August in KalutaraH
High heat & humidity in September in KalutaraH
High heat & humidity in October in KalutaraH
High heat & humidity in November in KalutaraH
High heat & humidity in December in KalutaraH
Sea temperature
28°C sea temperature in January in Kalutara28
28°C sea temperature in February in Kalutara28
29°C sea temperature in March in Kalutara29
29°C sea temperature in April in Kalutara29
29°C sea temperature in May in Kalutara29
28°C sea temperature in June in Kalutara28
27°C sea temperature in July in Kalutara27
27°C sea temperature in August in Kalutara27
28°C sea temperature in September in Kalutara28
28°C sea temperature in October in Kalutara28
28°C sea temperature in November in Kalutara28
28°C sea temperature in December in Kalutara28

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

Sunshine & Daylight in Kalutara

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
12 hours of daylight per day in January in Kalutara12
12 hours of daylight per day in February in Kalutara12
12 hours of daylight per day in March in Kalutara12
12 hours of daylight per day in April in Kalutara12
12 hours of daylight per day in May in Kalutara12
12 hours of daylight per day in June in Kalutara12
12 hours of daylight per day in July in Kalutara12
12 hours of daylight per day in August in Kalutara12
12 hours of daylight per day in September in Kalutara12
12 hours of daylight per day in October in Kalutara12
12 hours of daylight per day in November in Kalutara12
12 hours of daylight per day in December in Kalutara12
UV Index (Maximum)
UV (maximum) index 11 (Extreme) in January in Kalutara11
UV (maximum) index 11+ (Extreme) in February in Kalutara11
UV (maximum) index 11+ (Extreme) in March in Kalutara11
UV (maximum) index 11+ (Extreme) in April in Kalutara11
UV (maximum) index 11+ (Extreme) in May in Kalutara11
UV (maximum) index 11+ (Extreme) in June in Kalutara11
UV (maximum) index 11+ (Extreme) in July in Kalutara11
UV (maximum) index 11+ (Extreme) in August in Kalutara11
UV (maximum) index 11+ (Extreme) in September in Kalutara11
UV (maximum) index 11+ (Extreme) in October in Kalutara11
UV (maximum) index 11 (Extreme) in November in Kalutara11
UV (maximum) index 11 (Extreme) in December in Kalutara11

Rainfall in Kalutara

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
5 days with some rainfall in January in Kalutara5
5 days with some rainfall in February in Kalutara5
8 days with some rainfall in March in Kalutara8
13 days with some rainfall in April in Kalutara13
13 days with some rainfall in May in Kalutara13
14 days with some rainfall in June in Kalutara14
11 days with some rainfall in July in Kalutara11
10 days with some rainfall in August in Kalutara10
13 days with some rainfall in September in Kalutara13
15 days with some rainfall in October in Kalutara15
14 days with some rainfall in November in Kalutara14
10 days with some rainfall in December in Kalutara10
Average monthly rainfall (mm)
73 mm monthly rainfall in January in Kalutara73
91 mm monthly rainfall in February in Kalutara91
142 mm monthly rainfall in March in Kalutara142
258 mm monthly rainfall in April in Kalutara258
388 mm monthly rainfall in May in Kalutara388
235 mm monthly rainfall in June in Kalutara235
180 mm monthly rainfall in July in Kalutara180
161 mm monthly rainfall in August in Kalutara161
270 mm monthly rainfall in September in Kalutara270
377 mm monthly rainfall in October in Kalutara377
309 mm monthly rainfall in November in Kalutara309
175 mm monthly rainfall in December in Kalutara175

More about Kalutara

Kalutara by month

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

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The climate guide for Sri Lanka (Kalutara) 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 Kalutara?

Kalutara has a hot tropical climate with no dry season.

Kalutara weather in January

Expect daytime maximum temperatures of 31°C in Kalutara, Sri Lanka in January and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 73 mm of rainfall in the month.

  • 31°C maximum daytime temperature in January in Kalutara31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 5 days with some rainfall in January in Kalutara5
    5 days with some rainfall
  • 22°C minimum night-time temperature in January in Kalutara22
    22°C min night temperature
  • 12 hours of daylight per day in January in Kalutara12
    12 hours of daylight per day
  • High heat & humidity in January in KalutaraH
    High heat & humidity
  • 73 mm monthly rainfall in January in Kalutara73
    73 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in January in Kalutara11
    11 (Extreme) UV index
  • 28°C sea temperature in January in Kalutara28
    28°C sea temperature

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Kalutara weather in February

Expect daytime maximum temperatures of 31°C in Kalutara, Sri Lanka in February and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 91 mm of rainfall in the month.

  • 31°C maximum daytime temperature in February in Kalutara31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 5 days with some rainfall in February in Kalutara5
    5 days with some rainfall
  • 23°C minimum night-time temperature in February in Kalutara23
    23°C min night temperature
  • 12 hours of daylight per day in February in Kalutara12
    12 hours of daylight per day
  • High heat & humidity in February in KalutaraH
    High heat & humidity
  • 91 mm monthly rainfall in February in Kalutara91
    91 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in February in Kalutara11
    11+ (Extreme) UV index
  • 28°C sea temperature in February in Kalutara28
    28°C sea temperature

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Kalutara weather in March

Expect daytime maximum temperatures of 31°C in Kalutara, Sri Lanka in March and very high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 142 mm of rainfall in the month.

  • 31°C maximum daytime temperature in March in Kalutara31
    31°C max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in March in Kalutara8
    8 days with some rainfall
  • 24°C minimum night-time temperature in March in Kalutara24
    24°C min night temperature
  • 12 hours of daylight per day in March in Kalutara12
    12 hours of daylight per day
  • Very high heat & humidity in March in KalutaraVH
    Very High heat & humidity
  • 142 mm monthly rainfall in March in Kalutara142
    142 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in March in Kalutara11
    11+ (Extreme) UV index
  • 29°C sea temperature in March in Kalutara29
    29°C sea temperature

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Kalutara weather in April

Expect daytime maximum temperatures of 32°C in Kalutara, Sri Lanka in April and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 13 days with some rainfall and typically 258 mm of rainfall in the month.

  • 32°C maximum daytime temperature in April in Kalutara32
    32°C max day temperature
  • 8 hours of sunshine per day
  • 13 days with some rainfall in April in Kalutara13
    13 days with some rainfall
  • 24°C minimum night-time temperature in April in Kalutara24
    24°C min night temperature
  • 12 hours of daylight per day in April in Kalutara12
    12 hours of daylight per day
  • Very high heat & humidity in April in KalutaraVH
    Very High heat & humidity
  • 258 mm monthly rainfall in April in Kalutara258
    258 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in April in Kalutara11
    11+ (Extreme) UV index
  • 29°C sea temperature in April in Kalutara29
    29°C sea temperature

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Kalutara weather in May

Expect daytime maximum temperatures of 31°C in Kalutara, Sri Lanka in May and very high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 13 days with some rainfall and typically 388 mm of rainfall in the month.

  • 31°C maximum daytime temperature in May in Kalutara31
    31°C max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in May in Kalutara13
    13 days with some rainfall
  • 25°C minimum night-time temperature in May in Kalutara25
    25°C min night temperature
  • 12 hours of daylight per day in May in Kalutara12
    12 hours of daylight per day
  • Very high heat & humidity in May in KalutaraVH
    Very High heat & humidity
  • 388 mm monthly rainfall in May in Kalutara388
    388 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Kalutara11
    11+ (Extreme) UV index
  • 29°C sea temperature in May in Kalutara29
    29°C sea temperature

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Kalutara weather in June

Expect daytime maximum temperatures of 30°C in Kalutara, Sri Lanka in June and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 14 days with some rainfall and typically 235 mm of rainfall in the month.

  • 30°C maximum daytime temperature in June in Kalutara30
    30°C max day temperature
  • 6 hours of sunshine per day
  • 14 days with some rainfall in June in Kalutara14
    14 days with some rainfall
  • 25°C minimum night-time temperature in June in Kalutara25
    25°C min night temperature
  • 12 hours of daylight per day in June in Kalutara12
    12 hours of daylight per day
  • High heat & humidity in June in KalutaraH
    High heat & humidity
  • 235 mm monthly rainfall in June in Kalutara235
    235 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in June in Kalutara11
    11+ (Extreme) UV index
  • 28°C sea temperature in June in Kalutara28
    28°C sea temperature

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Kalutara weather in July

Expect daytime maximum temperatures of 30°C in Kalutara, Sri Lanka in July and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 11 days with some rainfall and typically 180 mm of rainfall in the month.

  • 30°C maximum daytime temperature in July in Kalutara30
    30°C max day temperature
  • 6 hours of sunshine per day
  • 11 days with some rainfall in July in Kalutara11
    11 days with some rainfall
  • 25°C minimum night-time temperature in July in Kalutara25
    25°C min night temperature
  • 12 hours of daylight per day in July in Kalutara12
    12 hours of daylight per day
  • High heat & humidity in July in KalutaraH
    High heat & humidity
  • 180 mm monthly rainfall in July in Kalutara180
    180 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in July in Kalutara11
    11+ (Extreme) UV index
  • 27°C sea temperature in July in Kalutara27
    27°C sea temperature

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Kalutara weather in August

Expect daytime maximum temperatures of 30°C in Kalutara, Sri Lanka in August and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 161 mm of rainfall in the month.

  • 30°C maximum daytime temperature in August in Kalutara30
    30°C max day temperature
  • 6 hours of sunshine per day
  • 10 days with some rainfall in August in Kalutara10
    10 days with some rainfall
  • 25°C minimum night-time temperature in August in Kalutara25
    25°C min night temperature
  • 12 hours of daylight per day in August in Kalutara12
    12 hours of daylight per day
  • High heat & humidity in August in KalutaraH
    High heat & humidity
  • 161 mm monthly rainfall in August in Kalutara161
    161 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Kalutara11
    11+ (Extreme) UV index
  • 27°C sea temperature in August in Kalutara27
    27°C sea temperature

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Kalutara weather in September

Expect daytime maximum temperatures of 30°C in Kalutara, Sri Lanka in September and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 13 days with some rainfall and typically 270 mm of rainfall in the month.

  • 30°C maximum daytime temperature in September in Kalutara30
    30°C max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in September in Kalutara13
    13 days with some rainfall
  • 25°C minimum night-time temperature in September in Kalutara25
    25°C min night temperature
  • 12 hours of daylight per day in September in Kalutara12
    12 hours of daylight per day
  • High heat & humidity in September in KalutaraH
    High heat & humidity
  • 270 mm monthly rainfall in September in Kalutara270
    270 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Kalutara11
    11+ (Extreme) UV index
  • 28°C sea temperature in September in Kalutara28
    28°C sea temperature

Back to months

Kalutara weather in October

Expect daytime maximum temperatures of 30°C in Kalutara, Sri Lanka in October and high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 15 days with some rainfall and typically 377 mm of rainfall in the month.

  • 30°C maximum daytime temperature in October in Kalutara30
    30°C max day temperature
  • 6 hours of sunshine per day
  • 15 days with some rainfall in October in Kalutara15
    15 days with some rainfall
  • 24°C minimum night-time temperature in October in Kalutara24
    24°C min night temperature
  • 12 hours of daylight per day in October in Kalutara12
    12 hours of daylight per day
  • High heat & humidity in October in KalutaraH
    High heat & humidity
  • 377 mm monthly rainfall in October in Kalutara377
    377 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in October in Kalutara11
    11+ (Extreme) UV index
  • 28°C sea temperature in October in Kalutara28
    28°C sea temperature

Back to months

Kalutara weather in November

Expect daytime maximum temperatures of 30°C in Kalutara, Sri Lanka in November and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 14 days with some rainfall and typically 309 mm of rainfall in the month.

  • 30°C maximum daytime temperature in November in Kalutara30
    30°C max day temperature
  • 7 hours of sunshine per day
  • 14 days with some rainfall in November in Kalutara14
    14 days with some rainfall
  • 23°C minimum night-time temperature in November in Kalutara23
    23°C min night temperature
  • 12 hours of daylight per day in November in Kalutara12
    12 hours of daylight per day
  • High heat & humidity in November in KalutaraH
    High heat & humidity
  • 309 mm monthly rainfall in November in Kalutara309
    309 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in November in Kalutara11
    11 (Extreme) UV index
  • 28°C sea temperature in November in Kalutara28
    28°C sea temperature

Back to months

Kalutara weather in December

Expect daytime maximum temperatures of 30°C in Kalutara, Sri Lanka in December and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 10 days with some rainfall and typically 175 mm of rainfall in the month.

  • 30°C maximum daytime temperature in December in Kalutara30
    30°C max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in December in Kalutara10
    10 days with some rainfall
  • 23°C minimum night-time temperature in December in Kalutara23
    23°C min night temperature
  • 12 hours of daylight per day in December in Kalutara12
    12 hours of daylight per day
  • High heat & humidity in December in KalutaraH
    High heat & humidity
  • 175 mm monthly rainfall in December in Kalutara175
    175 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in December in Kalutara11
    11 (Extreme) UV index
  • 28°C sea temperature in December in Kalutara28
    28°C sea temperature

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More about Kalutara

Kalutara by month

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

Recommended for Sri Lanka

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  • Save up to £300 on holidays (Jan 2026-Nov 2027)
  • Book online with TUI Black Friday discount code
  • Sign up to myTUI. Discount varies by spend. T&Cs apply
Go to TUI deal >>

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The climate guide for Sri Lanka (Kalutara) 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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More about Sri Lanka

Compare Kalutara with the UK

Below the Kalutara chart shows average maximum daytime temperature for Kalutara, Sri Lanka and the UK (London).

Maximum daytime temperature (°C)

Kalutara, Sri Lanka
UK (London)
31
7
31
7
31
10
32
13
31
17
30
20
30
22
30
22
30
19
30
15
30
10
30
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

Compare more Kalutara weather >>

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