December weather forecast
Grenadines, Saint Vincent and the Grenadines

Rounding off the year in Grenadines, Saint Vincent and the Grenadines, December sees a notable reduction in total rainfall to 138mm (5.43"), marking a steady move towards the dry season. Even as the rainfall lessens, temperature on land and sea remains unchanged, keeping the climate enjoyable and attractive, conducive to a variety of activities. The UV index further descends, offering relatively safer conditions under the sun. Given the dip in rainfall and perfect temperatures, December becomes an ideal month for embracing outdoor pursuits and discovering the island's flora and fauna. Locals and tourists in December see a fantastic blend of favorable weather conditions, end-of-year festivities, and unique natural beauty.

Temperature

January through March and December bring Grenadines's lowest average temperatures, reaching a high of 29°C (84.2°F).

Rainfall

In Grenadines, in December, during 18 rainfall days, 138mm (5.43") of precipitation is typically accumulated. In Grenadines, during the entire year, the rain falls for 200 days and collects up to 1594mm (62.76") of precipitation.

Sea temperature

January through April and December, with an average sea temperature of 27°C (80.6°F), are months with the coldest seawater.
Note: Swimming, diving, and other water-related activities in temperatures between 25°C (77°F) and 29°C (84.2°F) are considered highly enjoyable and satisfying for longer durations without uneasiness.

Daylight

With an average of 11h and 24min of daylight, December has the shortest days of the year in Grenadines.
On the first day of December, sunrise is at 06:11 and sunset at 17:36. On the last day of the month, sunrise is at 06:26 and sunset at 17:49 AST.

Sunshine

The months with the least sunshine in Grenadines are June, July, September through December, with an average of 7h of sunshine.

UV index

With an average maximum UV index of 9, December is the month with the lowest UV index in Grenadines, Saint Vincent and the Grenadines. A UV Index of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 9 transforms into these recommendations:
Take special precautions, as unprotected skin can be damaged and can burn quickly. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Apply liberally and reapply a broad-spectrum sunscreen of SPF 30+ every two hours, and promptly after any outdoor workout or a swim. Beware! Reflecting off water and sand, UV rays are much stronger.