Climate and monthly weather forecast
Roseau, Dominica

A calm, clear waterfront in the valley city of Roseau, Dominica
A calm, clear waterfront in the valley city of Roseau, Dominica

Weather in January

January, the same as December, is a moderately hot winter month in Roseau, Dominica, with an average temperature ranging between max 29°C (84.2°F) and min 21°C (69.8°F). The coldest months are January, February and December, with an average high-temperature of 29°C (84.2°F). Weather in January »

Weather in February

The last month of the winter, February, is another warm month in Roseau, Dominica, with an average temperature varying between 21°C (69.8°F) and 29°C (84.2°F). The coldest months are January, February and December, with an average high-temperature of 29°C (84.2°F). Weather in February »

Weather in March

March, the first month of the spring in Roseau, is a tropical month, with temperature in the range of an average high of 30°C (86°F) and an average low of 21°C (69.8°F). In March, the average high-temperature is almost the same as in February - a tropical 30°C (86°F). Weather in March »

Weather in April

April, the same as March, in Roseau, Dominica, is another tropical spring month, with temperature in the range of an average high of 30°C (86°F) and an average low of 22°C (71.6°F). In Roseau, the average high-temperature in April remains the same as in March - a still hot 30°C (86°F). Weather in April »

Weather in May

The last month of the spring, May, is also a hot month in Roseau, Dominica, with an average temperature ranging between min 23°C (73.4°F) and max 31°C (87.8°F). May through October, with an average high-temperature of 31°C (87.8°F), are the warmest months. Weather in May »

Weather in June

The first month of the summer, June, is still a hot month in Roseau, Dominica, with temperature in the range of an average high of 31°C (87.8°F) and an average low of 23°C (73.4°F). May through October, with an average high-temperature of 31°C (87.8°F), are the warmest months. Weather in June »

Weather in July

July, the same as June, in Roseau, Dominica, is another hot summer month, with temperature in the range of an average high of 31°C (87.8°F) and an average low of 23°C (73.4°F). The warmest months are May through October, with an average high-temperature of 31°C (87.8°F). In Roseau, in July, it is raining for 21 days, with typically 108mm (4.25") of accumulated precipitation. Weather in July »

Weather in August

August, the last month of the summer in Roseau, is also a hot month, with an average temperature fluctuating between 24°C (75.2°F) and 31°C (87.8°F). The warmest months are May through October, with an average high-temperature of 31°C (87.8°F). In Roseau, during August, the rain falls for 20 days and regularly aggregates up to 246mm (9.69") of precipitation. Weather in August »

Weather in September

The first month of the autumn, September, is also a hot month in Roseau, Dominica, with temperature in the range of an average low of 23°C (73.4°F) and an average high of 31°C (87.8°F). May through October, with an average high-temperature of 31°C (87.8°F), are the warmest months. In Roseau, during September, the rain falls for 23 days and regularly aggregates up to 250mm (9.84") of precipitation. Weather in September »

Weather in October

October, the same as September, in Roseau, Dominica, is another tropical autumn month, with an average temperature ranging between max 31°C (87.8°F) and min 23°C (73.4°F). The warmest months are May through October, with an average high-temperature of 31°C (87.8°F). In Roseau, Dominica, in October, during 19 rainfall days, 239mm (9.41") of precipitation is typically accumulated. Weather in October »

Weather in November

November, the last month of the autumn in Roseau, is also a hot month, with an average temperature varying between 30°C (86°F) and 22°C (71.6°F). In November, the average high-temperature is relatively the same as in October - a still tropical 30°C (86°F). Weather in November »

Weather in December

The first month of the winter, December, is also a moderately hot month in Roseau, Dominica, with an average temperature ranging between max 29°C (84.2°F) and min 21°C (69.8°F). January, February and December, with an average high-temperature of 29°C (84.2°F), are the coldest months. Weather in December »
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FAQ

What is the coldest month in Roseau?

The coldest months are January, February and December, with an average high-temperature of 29°C (84.2°F).

How many days does it rain in Roseau?

Throughout the year, there are 218 rainfall days, and 1996mm (78.58") of precipitation is accumulated.

What are the months with the least sunshine in Roseau?

The months with the least sunshine are January, February, September through December, with an average of 7h of sunshine.

What is the driest month in Roseau?

The months with the least rainfall in Roseau, Dominica, are February and April Rain falls for 14 days and accumulates 87mm (3.43") of rain.

When is the sea coldest in Roseau?

February and March, with an average sea temperature of 26°C (78.8°F), are months with the coldest seawater in Roseau, Dominica.

What is the month with the most sunshine in Roseau?

March through August, with an average of 8h of sunshine, are months with the most sunshine in Roseau.

When is the highest UV index in Roseau?

The months with the highest UV index in Roseau are March through September, with an average maximum UV index of 12.

What are the warmest months in Roseau?

May through October, with an average high-temperature of 31°C (87.8°F), are warmest months in Roseau, Dominica.

When are the longest days in Roseau?

With an average of 13h and 1min of daylight, June has the longest days of the year in Roseau.

When is the sea warmest in Roseau?

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Roseau, Dominica.

What is the wettest month in Roseau?

The month with the most rainfall in Roseau is November, when the rain falls for 19 days and typically aggregates up to 252mm (9.92") of precipitation.

What is the month with the shortest days in Roseau?

With an average of 11h and 14min of daylight, December has the shortest days of the year in Roseau.

Is there Daylight Saving Time (DST) in Roseau?

Roseau, Dominica, does not observe Daylight Saving Time (DST). AST timezone is used over the entire year.

When is the lowest UV index in Roseau?

The month with the lowest UV index in Roseau, Dominica, is December, with an average maximum UV index of 8.

Average temperature
Roseau, Dominica

Average temperature - Roseau, Dominica

The warmest months (with the highest average high temperature) are May, June, July, August, September and October (31°C).
The months with the lowest average high temperature are January, February and December (29°C).

The month with the highest average low temperature is August (24°C).
The coldest months (with the lowest average low temperature) are January, February, March and December (21°C).

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Average rainfall
Roseau, Dominica

Average rainfall - Roseau, Dominica

The wettest month (with the highest rainfall) is November (252mm).
The driest months (with the least rainfall) are February and April (87mm).

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Average rainfall days
Roseau, Dominica

Average rainfall days - Roseau, Dominica

The month with the highest number of rainy days is September (23 days).
The months with the least rainy days are February and April (14 days).

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Average sea temperature
Roseau, Dominica

Average sea temperature - Roseau, Dominica

The best months for swimming (with the highest average sea temperature) are September and October (29°C).
The coldest months (with the lowest average sea temperature) are February and March (26°C).

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Average daylight / Average sunshine
Roseau, Dominica

Average daylight / Average sunshine - Roseau, Dominica

The month with the longest days is June (Average daylight: 13h and 1min).
The month with the shortest days is December (Average daylight: 11h and 14min).

The months with the most sunshine are March, April, May, June, July and August (Average sunshine: 8h).
The months with the least sunshine are January, February, September, October, November and December (Average sunshine: 7h).

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Average UV index
Roseau, Dominica

Average UV index - Roseau, Dominica

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 8).

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