Saint Lucia Weather in December
In Saint Lucia, December brings high daytime temperatures around 30°C (86°F), with nights cooling to 25°C (77°F). Some rainfall is to be expected.
Rainfall in Saint Lucia in December
Rain is expected on roughly 18 days, totalling around 57 mm (2.2 in) for the month. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.
Temperature in Saint Lucia in December
In December, expect high temperatures in Saint Lucia, with highs of 30°C (86°F) and lows of 25°C (77°F) at night. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Saint Lucia in December
There are approximately 247 hours of sunshine this month, resulting in mostly clear days.Should you favor a climate that's both dry and comfortably warm, January, February and March typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Saint Lucia, check out our Saint Lucia's climate page.
Saint Lucia Temperature in December
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Chance of Rain
60%
Precipitation
57 mm (2.2 in)
Rainy days
18 days
Humidity
82%
Sunshine
247 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Saint Lucia typically stay consistent throughout December, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in December
Historical weather for Saint Lucia in December
Browse day-by-day weather records for Saint Lucia spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Saint Lucia historical weather extremes in December
Our historical data for Saint Lucia spans 1992 to 2025, revealing these weather extremes.
- The hottest December day on record in Saint Lucia reached 34°C (93°F) (December 8, 2021).
- The coldest December day was on December 4, 2018, with a maximum of 26°C (79°F).
- Saint Lucia registered its coldest December night on December 17, 1992, with temperatures dropping to 16°C (61°F).
Best Places in Saint Lucia in December
Find out more about the weather in Saint Lucia and which places have the best travel conditions in this month. See all of Saint Lucia in December →
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What to Wear in Saint Lucia in December
Warm but pleasant conditions in Saint Lucia in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Wet weather is likely, so pack waterproof gear for multiple rainy days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Saint Lucia in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Saint Lucia, check out our Saint Lucia's climate page.
Temperature Rainfall Sunshine Humidity
See the full Saint Lucia climate overview or explore weather in Saint Lucia.
