Saint Croix weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Excellent
Best time to visit: December – June
What is the weather like in Saint Croix in December?
In December, Saint Croix is warm: daytime highs average 26 °C, and even at night it stays warm at around 25 °C. The sea averages 27.6 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. Rain is frequent, with about 12 rainy days and 48 mm in total. The air is often humid and muggy. It is often windy, with gusts of around 31 km/h. All in all, December is an excellent month for a holiday in Saint Croix.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 78 | 84 | 90 |
| Day | 27° | 26° | 25° |
| Night | 25° | 25° | 24° |
| Sea | 29° | 28° | 27° |
| Sun | 8 h | 8 h | 8 h |
| Rain days | 16 | 12 | 9 |
More details for December
- Daylight
- 11 h 5 min06:42 – 17:46
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or moreAll months
- Wind
- 31 km/haverage daily peakAll months
- Cloud cover
- 35 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−4America/St_Thomas
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %78 %
- Few rainy daysweight 20 %41 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
- Windproof jacket
Saint Croix in December: quick answers
Is Saint Croix hot in December?
Warm rather than hot: in December, daytime highs in Saint Croix average 26 °C and nights cool to about 25 °C.
Can you swim in Saint Croix in December?
Yes. In December the sea averages 27.6 °C – lovely and warm for swimming.
Does it rain much in Saint Croix in December?
Rain is frequent, with about 12 rainy days and 48 mm in total.
Saint Croix month by month
The whole year in Saint CroixAll destinations: U.S. Virgin IslandsCaribbean weather in DecemberWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences