Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
December verdict
St Thomas, Virgin Islands (US) in December
Weather score68Good
Good for holiday weather
Average highs sit around 28°C, giving warm days by monthly-average standards. Sunshine averages 7.3h per day, enough for a balanced month. Rainfall averages 119mm, so some wet days are possible.
December weather
Monthly averages
Temp
28°C
Rain
119mm
Sun
7.3h
Sea
27°C
Weather score
68
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 119mm, so some wet days are possible.
Some sun
Sunshine averages 7.3h per day, enough for a balanced month.
Warm sea
Sea temperatures average 27°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare St Thomas, Virgin Islands (US) with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December28°C average high
December is on the cooler side of St Thomas' year, useful if you prefer less intense daytime heat.
Warmest monthsMay to November
This stretch sets the upper range for average daytime heat.
Rain
December119mm average rain
December sits near St Thomas' yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to April and June to July
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December7.3 hours average sun
December is below St Thomas' yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsFebruary to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December27°C average sea
December is close to St Thomas' yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJune to November
Sea temperatures are usually near 28°C in this stretch, so swimming comfort is at its strongest.
Weather score
December68 weather score
December sits close to St Thomas' yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJanuary to April and June
These months have the strongest weather score in the monthly averages.
