Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
December verdict
Saint Lucia in December
Weather score67Good
Good for holiday weather
Average highs sit around 29°C, giving warm days by monthly-average standards. Sunshine averages 7.6h per day, enough for a balanced month. Rainfall averages 149mm, so some wet days are possible.
December weather
Monthly averages
Temp
29°C
Rain
149mm
Sun
7.6h
Sea
28°C
Weather score
67
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 149mm, so some wet days are possible.
Some sun
Sunshine averages 7.6h per day, enough for a balanced month.
Warm sea
Sea temperatures average 28°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Saint Lucia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December29°C average high
December is close to Saint Lucia's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
December149mm average rain
December sits near Saint Lucia's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to May
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December7.6 hours average sun
December is close to Saint Lucia's usual sunshine level, with limited seasonal swing across the year.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
December28°C average sea
December is close to Saint Lucia's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to November
Sea temperatures are usually near 28°C in this stretch, so swimming comfort is at its strongest.
Weather score
December67 weather score
December sits close to Saint Lucia's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJanuary to April
These months have the strongest weather score in the monthly averages.
