December weather forecast
Roseau, Dominica

Come December, weather in Roseau, Dominica, transitions further towards the dry season, making it an attractive month for tourism. The decline in rainfall from November is noticeable as the city gears up for festivities. Daylight hours decrease; however, sunlight faithfully brightens most of the day. The sea temperature starts to retreat alongside the waning days of the year. The UV index drops to its annual low, easing the intensity of sun protection needs. Nonetheless, due diligence remains necessary to enjoy the year-end festivities fully.

Temperature

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

Rainfall

In Roseau, in December, during 19 rainfall days, 176mm (6.93") of precipitation is typically accumulated. In Roseau, during the entire year, the rain falls for 218 days and collects up to 1996mm (78.58") of precipitation.

Sea temperature

In December, the average sea temperature is 27°C (80.6°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is perceived as agreeably warm, making all water activities enjoyable without the risk of discomfort over lengthy durations.

Daylight

With an average of 11h and 12min of daylight, December has the shortest days of the year in Roseau.
On the first day of the month, sunrise is at 06:16 and sunset at 17:33. On the last day of December, sunrise is at 06:31 and sunset at 17:45 AST.

Sunshine

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

UV index

The month with the lowest UV index is December, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high health risk from unsafe exposure to UV radiation for the average person.
Note: A typical high UV index of 8 in December suggests the following recommendations:
Prioritize protection; rapid damage can occur to unprotected eyes and skin. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.