Cul de Sac Weather in December
Cul de Sac in December averages 28°C (82°F) during the day and 25°C (77°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Cul de Sac in December
Typically around 20 days of rainfall are expected, averaging 60 mm (2.4 in) for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.
Temperature in Cul de Sac in December
December tends to be one of the perfect months in Cul de Sac, with 28°C (82°F) in the afternoon and 25°C (77°F) overnight. This kind of day-to-night contrast is typical for this time of year. 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 Cul de Sac in December
The month enjoys around 248 hours of sunshine, creating mostly sunny days with good weather conditions.
Wind Speed in Cul de Sac in December
Wind speeds average 5 m/s (10 knots) during December. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.
Average water temperature in December
The water is 27°C (81°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.If you're a fan of comfortable temperatures and drier conditions, December is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Saint Martin, check out our Cul de Sac's climate page.
Cul de Sac Temperature in December
Min Temperature
25°C (77°F)
Max Temperature
28°C (82°F)
Water Temperature
27°C (81°F) *
Chance of Rain
67%
Precipitation
60 mm (2.4 in)
Rainy days
20 days
Humidity
77% *
Windspeed
5 m/s (10 knots) *
Sunshine
248 hours *
Percentage Sunshine
71% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cul de Sac typically stay consistent throughout December, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in December
Historical weather for Cul de Sac in December
Browse day-by-day weather records for Cul de Sac spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cul de Sac historical weather extremes in December
Based on weather observations in Cul de Sac between 1976 and 2025, these are the recorded extremes during December.
- The warmest day in December was on December 1, 1999, with a maximum of 32°C (90°F).
- Cul de Sac experienced its chilliest December day on December 2, 2005, reaching only 25°C (77°F).
- Nighttime temperatures dropped to 18°C (64°F) on December 3, 2011, marking the coldest December night on record.
Best Places in Saint Martin in December
Find out more about the weather in Saint Martin and which places have the best travel conditions in this month. See all of Saint Martin in December →
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What to Wear in Cul de Sac in December
Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. With water temperatures around 27°C (81°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Cul de Sac 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 Martin, check out our Cul de Sac's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Cul de Sac climate overview or explore weather in Saint Martin.
