Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
September verdict
Sierra Leone in September
Weather score48Mixed
Mixed for holiday weather
Average highs sit around 28°C, giving warm days by monthly-average standards. Sunshine averages 4.1h per day, so this is not one of the brighter months. Rainfall averages 462mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
28°C
Rain
462mm
Sun
4.1h
Sea
20°C
Weather score
48
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 462mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4.1h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 20°C, so the water can feel cool.
Map
Weather map
Compare Sierra Leone with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September28°C average high
September is on the cooler side of Sierra Leone's year, useful if you prefer less intense daytime heat.
Warmest monthsJanuary to May
This stretch sets the upper range for average daytime heat.
Rain
September462mm average rain
September is wetter than Sierra Leone's yearly average, so flexible plans matter more.
Driest monthsJanuary to May and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September4.1 hours average sun
September is below Sierra Leone's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJanuary to April and November to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September20°C average sea
September is close to Sierra Leone's usual sea temperature, with limited seasonal change in the water.
Warmest seaJanuary to July and September to December
Sea temperatures are usually near 21°C in this stretch, so swimming comfort is at its strongest.
Weather score
September48 weather score
September is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJanuary to March and December
These months have the strongest weather score in the monthly averages.