☀️ Yes! Average temperature: 28°C
Yes! Average temperatures of 28°C make it pleasantly warm and ideal for sun-seekers. St. Lucia in December has an average air temperature of 28°C with sea temperatures around 27°C. You can expect 7 hours of sunshine per day and 115mm of rainfall, which means moderate rainfall — some wet days expected.
At 27°C the sea is like a warm bath — perfect for swimming, snorkelling, and diving. With 7 hours of daily sunshine, there's plenty of time to enjoy outdoor activities. Bring summer clothes, sunscreen, sunglasses, and a light cardigan for air-conditioned venues.
St. Lucia is one of the top warm destinations for December holidays from the UK. The average flight time from the UK is comfortable and there are usually good deals available for this time of year.
Here's how St. Lucia stacks up against similar destinations in December:
| Destination | Air °C | Sea °C | Rain | Sun |
|---|---|---|---|---|
| St. Lucia | 28°C | 27°C | 115mm | 7h |
| Antigua | 28°C | 27°C | 70mm | 8h |
| Aruba | 28°C | 27°C | 55mm | 8h |
| Bali | 28°C | 28°C | 250mm | 5h |
| Barbados | 28°C | 27°C | 85mm | 8h |
| Boracay | 28°C | 28°C | 80mm | 7h |
See how St. Lucia's temperature changes throughout the year:
Looking for somewhere warm in December? These destinations are all 25°C+:
Yes, St. Lucia in December has average temperatures of 28°C, making it a warm destination. Sea temperatures are 27°C.
Yes, the sea temperature of 27°C is very comfortable for swimming.
Bring summer clothes, sunscreen, sunglasses, and a light cardigan for air-conditioned venues.
December is an excellent time to visit St. Lucia with warm weather and 7 hours of daily sunshine.
Compare temperatures, sea conditions & sunshine for 70+ destinations worldwide
Explore All Destinations →