The month in detail
What to expect in December
December is peak dry season in Saint Thomas. The air is warm and humidity more bearable than in the rainy season. Rain risk remains low (20% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if March (8.7/10) remains theoretically better.
December ranks 5 out of 12 months in Saint Thomas. Compared to November: 11 pts fewer rainy days, +0.6h of sun per day.
This month's conditions
What it's like in December
UV index
6 · high
sunscreen and hat advised
Feels like
very humid
22°
Sea
28°C
warm, ideal
Daylight
10.9h of daylight
Air quality
good
AQI 29
Compare
Is December the right month?
The best month in Saint Thomas is March (8.7/10), 0.3 pt higher than December.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Saint Thomas
Expedia →
Activities
Tours, tickets, experiences
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Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Saint Thomas
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a tropical stay.
Country · US Virgin Islands
🗣️LanguageEnglish
💶CurrencyUS Dollar ($)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘVery expensive · 5/5
🌡️ Climate
🌍Climate typeTropical
📈Climate trend ⓘ+0.93°C/decade
🔥Hottest monthSeptember · 29°C
❄️Coolest monthJanuary · 26°C
🌧️Rainiest month ⓘOctober · 32%
🏝️ Tropical stay
🌞Dry season ⓘMay → Sep
🌧️Wet season ⓘDec → Mar
🌀Cyclones ⓘSeason Nov-Apr
Explore
Other destinations in December
If December doesn't convince you for this destination, compare with others.
Similar climate
Saint MartinSaint Martin
Saint BarthélemySaint Barthélemy
Saint LuciaSaint Lucia
AntiguaAntigua and Barbuda
Turks and CaicosTurks and Caicos
Location
Where is Saint Thomas ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
US Virgin IslandsTropical climate with a 8.7 → 5.5 gap between best and worst month. 10 years of ERA5 data to choose by project.
18.34°N · 64.93°W
Questions
Frequently asked questions
What is the best time to visit Saint Thomas?
March is the best month with 26.0°C highs, 24.0°C lows, 7.5h of sunshine and 12.0% rainy days. The months of March & January offer comparable conditions.
How many hours of sunshine does Saint Thomas get in March?
Saint Thomas averages 7.5 sunshine hours per day in March. It is the sunniest month with a climate score of 8.2/10.
What is the rainiest month in Saint Thomas?
September is the most unfavourable month with September has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Saint Thomas in March?
In March, overnight lows reach 24.0°C, while afternoon highs average 26.0°C.
Is Saint Thomas good in winter?
In winter (December-February), Saint Thomas scores 8.0/10 on average — Decent period conditions for cultural visits.. The best month overall remains March with a score of 8.2/10.
When should you avoid Saint Thomas?
September is the most difficult month to visit Saint Thomas, with September has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Saint Thomas in December?
In December, the sea averages 28°C in Saint Thomas: warm, ideal. Ideal conditions for swimming and snorkeling.
Do you need sun protection in Saint Thomas in December?
The average UV index reaches 6 in December in Saint Thomas (high), with about 10.9h of daylight. Sunscreen and hat advised.