January 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

Temperature

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

Rainfall

In Roseau, in January, it is raining for 18 days, with typically 136mm (5.4") of accumulated precipitation. In Roseau, during the entire year, the rain falls for 218 days and collects up to 1996mm (78.6") of precipitation.

Sea temperature

In January, the average sea temperature in Roseau is 27°C (80.6°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in January is 11.3h.

Sunshine

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

UV index

The average UV index in January is 9.

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.

What is the temperature in January in Roseau?

In Roseau, Dominica, in January, the average high-temperature is 29°C (84.2°F), and the average low-temperature is 21°C (69.8°F).

How much does it rain in Roseau in January?

In January, the rain falls for 18 days. Throughout January, 136mm (5.4") of precipitation is accumulated.

What is the sea water temperature in January in Roseau?

In January, the average sea temperature in Roseau is 27°C (80.6°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 average length of the day in January in Roseau?

In January, the average length of the day in Roseau, Dominica, is 11.3h.

What is the month with the least sunshine in Roseau?

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

How long on average sun shines in January in Roseau?

In January, the average sunshine in Roseau, Dominica, is 7h.

How high is the UV index in January in Roseau?

The average UV index in January is 9.
Average temperature in January - Roseau, Dominica
  • Average high temperature in January: 29°C

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).

  • Average low temperature in January: 21°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 in January - Roseau, Dominica
  • Average rainfall in January: 136mm

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

Average rainfall days in January - Roseau, Dominica
  • Average rainfall days in January: 18 days

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 in January - Roseau, Dominica
  • Average sea temperature in January: 27°C

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 in January / Average sunshine in January - Roseau, Dominica
  • Average daylight in January: 11.3h

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

  • Average sunshine in January: 7h

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 in January - Roseau, Dominica
  • Average UV index in January: 9

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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