Warm
Average highs sit around 32°C, giving warm days by monthly-average standards.
September verdict
São Luís, Brazil in September
Weather score78Very good
Very good for holiday weather
Average highs sit around 32°C, giving warm days by monthly-average standards. Sunshine averages 8.3h per day, so bright days are a strong part of the month. Rainfall averages 18mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
32°C
Rain
18mm
Sun
8.3h
Sea
28°C
Weather score
78
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 18mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.3h per day, so bright days are a strong part of the month.
Warm sea
Sea temperatures average 28°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare São Luís, Brazil with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September32°C average high
September is close to São Luís' usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
September18mm average rain
September is one of São Luís' driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJune to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September8.3 hours average sun
September is one of São Luís' sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsJuly to November
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September28°C average sea
September is part of a consistently warm sea-temperature pattern, so swimming comfort changes little through the year.
Warmest seaAll year
Sea temperatures stay warm enough for easy swimming through the year.
Weather score
September78 weather score
September is one of São Luís' best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsAugust to November
These months have the strongest weather score in the monthly averages.