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

Lowest temperatures are observed in January through March and December, averaging a high-temperature of 29°C (84.2°F).

Rainfall

In December, the rain falls for 18 days. Throughout December, 138mm (5.43") of precipitation is accumulated. Throughout the year, there are 200 rainfall days, and 1594mm (62.76") of precipitation is accumulated.

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: Water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are pleasurable, without feeling uncomfortable even during extended periods.

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 the month, sunrise is at 06:11 and sunset at 17:36. On the last day of December, sunrise is at 06:26 and sunset at 17:49 AST.

Sunshine

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

UV index

The month with the lowest UV index is December, with an average maximum UV index of 9. A UV Index reading of 8 to 10 represents a very high health risk from exposure to the Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 9 suggests this advice:
Never be careless. Unprotected skin and eyes can be harmed swiftly. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. After a swim or outdoor exercise, one should liberally reapply broad-spectrum sunscreen with a sun protection factor of 30 or higher. Attention! The combination of sand and water reflections enhances UV ray intensity.