Typical Weather in St Lucia, Caribbean in December
85° F Avg High
71° F Avg Low
9 Rainy Days
☀️ Temperature Summary
While still warm, December is one of the cooler months of the year for St Lucia, with highs averaging around 85°F. You can expect overnight lows near 71°F most days.
December is a great time to visit St Lucia, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
In December you can expect close to a 28% chance of rain for any given day. It rains more than usual in December, with total rainfall for the month typically near 5 inches. If you want to avoid the wet conditions in December, you may consider visiting in January instead, when rainfall chances can be closer to 17%.
Rainfall Throughout the Year
Planning a trip to St Lucia? Try our free trip weather planner