Monthly weather forecast and climate
Roseau, Dominica

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

What are the coldest months in Roseau?

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

How many days does it rain in Roseau?

Throughout the year, there are 218 rainfall days, and 1996mm (78.6") of precipitation is accumulated.

What is the driest month in Roseau?

Months with the least rainfall are February and April Rain falls for 14 days and accumulates 87mm (3.4") of rain.

When is the sea coldest in Roseau?

Months with the coldest seawater are February and March, with an average sea temperature of 26°C (78.8°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the month with the highest UV index in Roseau?

Months with the highest UV index are March through September, with an average 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.

What are the months with the warmest sea water in Roseau?

Months with the warmest seawater in Roseau, Dominica, are September and October, with an average sea temperature of 29°C (84.2°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the rainiest 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 (9.9") of precipitation.

What is the month with the lowest UV index in Roseau?

December is the month with the lowest UV index, with an average UV index of 8.
Average temperature - Roseau, Dominica

Warmest months (with the highest average high temperature) are May, June, July, August, September and October (31°C).
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).
Coldest months (with the lowest average low temperature) are January, February, March and December (21°C).

Average rainfall - Roseau, Dominica

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

Average rainfall days - Roseau, Dominica

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

Average sea temperature - Roseau, Dominica

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

Average daylight / Average sunshine - Roseau, Dominica

The month with the longest days is June (Average daylight: 13h).
The month with shortest days is December (Average daylight: 11.2h).

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

Average UV index - Roseau, Dominica

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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