Roseau weather by month

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

Temperature in Roseau (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
29°C maximum daytime temperature in January in Roseau29
29°C maximum daytime temperature in February in Roseau29
30°C maximum daytime temperature in March in Roseau30
30°C maximum daytime temperature in April in Roseau30
31°C maximum daytime temperature in May in Roseau31
31°C maximum daytime temperature in June in Roseau31
31°C maximum daytime temperature in July in Roseau31
31°C maximum daytime temperature in August in Roseau31
31°C maximum daytime temperature in September in Roseau31
31°C maximum daytime temperature in October in Roseau31
30°C maximum daytime temperature in November in Roseau30
29°C maximum daytime temperature in December in Roseau29
Min temperature (night-time)
21°C minimum night-time temperature in January in Roseau21
21°C minimum night-time temperature in February in Roseau21
21°C minimum night-time temperature in March in Roseau21
22°C minimum night-time temperature in April in Roseau22
23°C minimum night-time temperature in May in Roseau23
23°C minimum night-time temperature in June in Roseau23
23°C minimum night-time temperature in July in Roseau23
24°C minimum night-time temperature in August in Roseau24
23°C minimum night-time temperature in September in Roseau23
23°C minimum night-time temperature in October in Roseau23
22°C minimum night-time temperature in November in Roseau22
21°C minimum night-time temperature in December in Roseau21
Heat & Humidity
Moderate heat & humidity in January in RoseauM
Moderate heat & humidity in February in RoseauM
High heat & humidity in March in RoseauH
High heat & humidity in April in RoseauH
High heat & humidity in May in RoseauH
Very high heat & humidity in June in RoseauVH
Very high heat & humidity in July in RoseauVH
Very high heat & humidity in August in RoseauVH
Very high heat & humidity in September in RoseauVH
High heat & humidity in October in RoseauH
High heat & humidity in November in RoseauH
High heat & humidity in December in RoseauH
Sea temperature
27°C sea temperature in January in Roseau27
26°C sea temperature in February in Roseau26
26°C sea temperature in March in Roseau26
27°C sea temperature in April in Roseau27
28°C sea temperature in May in Roseau28
28°C sea temperature in June in Roseau28
28°C sea temperature in July in Roseau28
29°C sea temperature in August in Roseau29
29°C sea temperature in September in Roseau29
29°C sea temperature in October in Roseau29
28°C sea temperature in November in Roseau28
28°C sea temperature in December in Roseau28

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

Sunshine & UV index in Roseau

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
11 hours of daylight per day in January in Roseau11
12 hours of daylight per day in February in Roseau12
12 hours of daylight per day in March in Roseau12
12 hours of daylight per day in April in Roseau12
13 hours of daylight per day in May in Roseau13
13 hours of daylight per day in June in Roseau13
13 hours of daylight per day in July in Roseau13
13 hours of daylight per day in August in Roseau13
12 hours of daylight per day in September in Roseau12
12 hours of daylight per day in October in Roseau12
11 hours of daylight per day in November in Roseau11
11 hours of daylight per day in December in Roseau11
UV Index (Maximum)
UV (maximum) index 9 (Very High) in January in Roseau9
UV (maximum) index 11 (Extreme) in February in Roseau11
UV (maximum) index 11+ (Extreme) in March in Roseau11
UV (maximum) index 11+ (Extreme) in April in Roseau11
UV (maximum) index 11+ (Extreme) in May in Roseau11
UV (maximum) index 11+ (Extreme) in June in Roseau11
UV (maximum) index 11+ (Extreme) in July in Roseau11
UV (maximum) index 11+ (Extreme) in August in Roseau11
UV (maximum) index 11+ (Extreme) in September in Roseau11
UV (maximum) index 11 (Extreme) in October in Roseau11
UV (maximum) index 9 (Very High) in November in Roseau9
UV (maximum) index 8 (Very High) in December in Roseau8

Rainfall in Roseau

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
18 days with some rainfall in January in Roseau18
14 days with some rainfall in February in Roseau14
15 days with some rainfall in March in Roseau15
14 days with some rainfall in April in Roseau14
17 days with some rainfall in May in Roseau17
19 days with some rainfall in June in Roseau19
21 days with some rainfall in July in Roseau21
20 days with some rainfall in August in Roseau20
23 days with some rainfall in September in Roseau23
19 days with some rainfall in October in Roseau19
19 days with some rainfall in November in Roseau19
19 days with some rainfall in December in Roseau19
Average monthly rainfall (mm)
136 mm monthly rainfall in January in Roseau136
87 mm monthly rainfall in February in Roseau87
93 mm monthly rainfall in March in Roseau93
87 mm monthly rainfall in April in Roseau87
137 mm monthly rainfall in May in Roseau137
185 mm monthly rainfall in June in Roseau185
108 mm monthly rainfall in July in Roseau108
246 mm monthly rainfall in August in Roseau246
250 mm monthly rainfall in September in Roseau250
239 mm monthly rainfall in October in Roseau239
252 mm monthly rainfall in November in Roseau252
176 mm monthly rainfall in December in Roseau176

More about Roseau

Roseau by month

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

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The climate guide for Dominica (Roseau) 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 Roseau?

Roseau has a hot tropical climate with no dry season.

Roseau weather in January

Expect daytime maximum temperatures of 29°C in Roseau, Dominica in January based on long-term weather averages. There are 7 hours of sunshine per day on average with 18 days with some rainfall and typically 136 mm of rainfall in the month.

  • 29°C maximum daytime temperature in January in Roseau29
    29°C max day temperature
  • 7 hours of sunshine per day
  • 18 days with some rainfall in January in Roseau18
    18 days with some rainfall
  • 21°C minimum night-time temperature in January in Roseau21
    21°C min night temperature
  • 11 hours of daylight per day in January in Roseau11
    11 hours of daylight per day
  • Moderate heat & humidity in January in RoseauM
    Moderate heat & humidity
  • 136 mm monthly rainfall in January in Roseau136
    136 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in January in Roseau9
    9 (Very High) UV index
  • 27°C sea temperature in January in Roseau27
    27°C sea temperature

Back to months

Roseau weather in February

Expect daytime maximum temperatures of 29°C in Roseau, Dominica in February based on long-term weather averages. There are 7 hours of sunshine per day on average with 14 days with some rainfall and typically 87 mm of rainfall in the month.

  • 29°C maximum daytime temperature in February in Roseau29
    29°C max day temperature
  • 7 hours of sunshine per day
  • 14 days with some rainfall in February in Roseau14
    14 days with some rainfall
  • 21°C minimum night-time temperature in February in Roseau21
    21°C min night temperature
  • 12 hours of daylight per day in February in Roseau12
    12 hours of daylight per day
  • Moderate heat & humidity in February in RoseauM
    Moderate heat & humidity
  • 87 mm monthly rainfall in February in Roseau87
    87 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in February in Roseau11
    11 (Extreme) UV index
  • 26°C sea temperature in February in Roseau26
    26°C sea temperature

Back to months

Roseau weather in March

Expect daytime maximum temperatures of 30°C in Roseau, Dominica in March and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 15 days with some rainfall and typically 93 mm of rainfall in the month.

  • 30°C maximum daytime temperature in March in Roseau30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 15 days with some rainfall in March in Roseau15
    15 days with some rainfall
  • 21°C minimum night-time temperature in March in Roseau21
    21°C min night temperature
  • 12 hours of daylight per day in March in Roseau12
    12 hours of daylight per day
  • High heat & humidity in March in RoseauH
    High heat & humidity
  • 93 mm monthly rainfall in March in Roseau93
    93 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in March in Roseau11
    11+ (Extreme) UV index
  • 26°C sea temperature in March in Roseau26
    26°C sea temperature

Back to months

Roseau weather in April

Expect daytime maximum temperatures of 30°C in Roseau, Dominica in April and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 14 days with some rainfall and typically 87 mm of rainfall in the month.

  • 30°C maximum daytime temperature in April in Roseau30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 14 days with some rainfall in April in Roseau14
    14 days with some rainfall
  • 22°C minimum night-time temperature in April in Roseau22
    22°C min night temperature
  • 12 hours of daylight per day in April in Roseau12
    12 hours of daylight per day
  • High heat & humidity in April in RoseauH
    High heat & humidity
  • 87 mm monthly rainfall in April in Roseau87
    87 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in April in Roseau11
    11+ (Extreme) UV index
  • 27°C sea temperature in April in Roseau27
    27°C sea temperature

Back to months

Roseau weather in May

Expect daytime maximum temperatures of 31°C in Roseau, Dominica in May and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 17 days with some rainfall and typically 137 mm of rainfall in the month.

  • 31°C maximum daytime temperature in May in Roseau31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 17 days with some rainfall in May in Roseau17
    17 days with some rainfall
  • 23°C minimum night-time temperature in May in Roseau23
    23°C min night temperature
  • 13 hours of daylight per day in May in Roseau13
    13 hours of daylight per day
  • High heat & humidity in May in RoseauH
    High heat & humidity
  • 137 mm monthly rainfall in May in Roseau137
    137 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Roseau11
    11+ (Extreme) UV index
  • 28°C sea temperature in May in Roseau28
    28°C sea temperature

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Roseau weather in June

Expect daytime maximum temperatures of 31°C in Roseau, Dominica in June and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 19 days with some rainfall and typically 185 mm of rainfall in the month.

  • 31°C maximum daytime temperature in June in Roseau31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 19 days with some rainfall in June in Roseau19
    19 days with some rainfall
  • 23°C minimum night-time temperature in June in Roseau23
    23°C min night temperature
  • 13 hours of daylight per day in June in Roseau13
    13 hours of daylight per day
  • Very high heat & humidity in June in RoseauVH
    Very High heat & humidity
  • 185 mm monthly rainfall in June in Roseau185
    185 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in June in Roseau11
    11+ (Extreme) UV index
  • 28°C sea temperature in June in Roseau28
    28°C sea temperature

Back to months

Roseau weather in July

Expect daytime maximum temperatures of 31°C in Roseau, Dominica in July and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 21 days with some rainfall and typically 108 mm of rainfall in the month.

  • 31°C maximum daytime temperature in July in Roseau31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 21 days with some rainfall in July in Roseau21
    21 days with some rainfall
  • 23°C minimum night-time temperature in July in Roseau23
    23°C min night temperature
  • 13 hours of daylight per day in July in Roseau13
    13 hours of daylight per day
  • Very high heat & humidity in July in RoseauVH
    Very High heat & humidity
  • 108 mm monthly rainfall in July in Roseau108
    108 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in July in Roseau11
    11+ (Extreme) UV index
  • 28°C sea temperature in July in Roseau28
    28°C sea temperature

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Roseau weather in August

Expect daytime maximum temperatures of 31°C in Roseau, Dominica in August and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 20 days with some rainfall and typically 246 mm of rainfall in the month.

  • 31°C maximum daytime temperature in August in Roseau31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 20 days with some rainfall in August in Roseau20
    20 days with some rainfall
  • 24°C minimum night-time temperature in August in Roseau24
    24°C min night temperature
  • 13 hours of daylight per day in August in Roseau13
    13 hours of daylight per day
  • Very high heat & humidity in August in RoseauVH
    Very High heat & humidity
  • 246 mm monthly rainfall in August in Roseau246
    246 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Roseau11
    11+ (Extreme) UV index
  • 29°C sea temperature in August in Roseau29
    29°C sea temperature

Back to months

Roseau weather in September

Expect daytime maximum temperatures of 31°C in Roseau, Dominica in September and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 23 days with some rainfall and typically 250 mm of rainfall in the month.

  • 31°C maximum daytime temperature in September in Roseau31
    31°C max day temperature
  • 7 hours of sunshine per day
  • 23 days with some rainfall in September in Roseau23
    23 days with some rainfall
  • 23°C minimum night-time temperature in September in Roseau23
    23°C min night temperature
  • 12 hours of daylight per day in September in Roseau12
    12 hours of daylight per day
  • Very high heat & humidity in September in RoseauVH
    Very High heat & humidity
  • 250 mm monthly rainfall in September in Roseau250
    250 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Roseau11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Roseau29
    29°C sea temperature

Back to months

Roseau weather in October

Expect daytime maximum temperatures of 31°C in Roseau, Dominica in October and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 19 days with some rainfall and typically 239 mm of rainfall in the month.

  • 31°C maximum daytime temperature in October in Roseau31
    31°C max day temperature
  • 7 hours of sunshine per day
  • 19 days with some rainfall in October in Roseau19
    19 days with some rainfall
  • 23°C minimum night-time temperature in October in Roseau23
    23°C min night temperature
  • 12 hours of daylight per day in October in Roseau12
    12 hours of daylight per day
  • High heat & humidity in October in RoseauH
    High heat & humidity
  • 239 mm monthly rainfall in October in Roseau239
    239 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in October in Roseau11
    11 (Extreme) UV index
  • 29°C sea temperature in October in Roseau29
    29°C sea temperature

Back to months

Roseau weather in November

Expect daytime maximum temperatures of 30°C in Roseau, Dominica in November and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 19 days with some rainfall and typically 252 mm of rainfall in the month.

  • 30°C maximum daytime temperature in November in Roseau30
    30°C max day temperature
  • 7 hours of sunshine per day
  • 19 days with some rainfall in November in Roseau19
    19 days with some rainfall
  • 22°C minimum night-time temperature in November in Roseau22
    22°C min night temperature
  • 11 hours of daylight per day in November in Roseau11
    11 hours of daylight per day
  • High heat & humidity in November in RoseauH
    High heat & humidity
  • 252 mm monthly rainfall in November in Roseau252
    252 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in November in Roseau9
    9 (Very High) UV index
  • 28°C sea temperature in November in Roseau28
    28°C sea temperature

Back to months

Roseau weather in December

Expect daytime maximum temperatures of 29°C in Roseau, Dominica in December and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 19 days with some rainfall and typically 176 mm of rainfall in the month.

  • 29°C maximum daytime temperature in December in Roseau29
    29°C max day temperature
  • 7 hours of sunshine per day
  • 19 days with some rainfall in December in Roseau19
    19 days with some rainfall
  • 21°C minimum night-time temperature in December in Roseau21
    21°C min night temperature
  • 11 hours of daylight per day in December in Roseau11
    11 hours of daylight per day
  • High heat & humidity in December in RoseauH
    High heat & humidity
  • 176 mm monthly rainfall in December in Roseau176
    176 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in December in Roseau8
    8 (Very High) UV index
  • 28°C sea temperature in December in Roseau28
    28°C sea temperature

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More about Roseau

Roseau by month

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

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The climate guide for Dominica (Roseau) 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.

Tropical storm risk: Roseau, Dominica hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
<1%
2.9%
4%
1.6%
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Compare Roseau weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Roseau, Dominica and the UK (London).

Maximum daytime temperature (°C)

Roseau, Dominica
UK (London)
29
7
29
7
30
10
30
13
31
17
31
20
31
22
31
22
31
19
31
15
30
10
29
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

Compare more weather >>

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