Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
Weather Guide
Saint Lucia Average Monthly Weather
Weather score65Good annual avg
Best months: February, March, April
Across the year, average daytime temperatures are around 30°C, sunshine averages 7.8h per day, and rainfall totals about 2035mm. Sea temperatures average 28°C across the year.
Annual weather
Annual averages
Temp
30°C
Rain
2035mm
Annual total
Sun
7.8h
Sea
28°C
Weather score
65
Good avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 216mm, so showers are a real planning factor.
Bright
Sunshine averages 8.1h per day, so bright days are a strong part of the month.
Warm sea
Sea temperatures average 29°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
August30°C average high
August 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
August216mm average rain
August is wetter than Saint Lucia's yearly average, so flexible plans matter more.
Driest monthsJanuary to May
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August8.1 hours average sun
August is part of a consistently bright year-round pattern, so sunny days are a steady part of the climate.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
August29°C average sea
August sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to November
Sea temperatures are usually near 28°C in this stretch, so swimming comfort is at its strongest.
Weather score
August60 weather score
August scores below Saint Lucia's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to April
These months have the strongest weather score in the monthly averages.
