Hot
Average highs reach 32°C, so days can feel very hot.
September verdict
Bangkok, Thailand in September
Weather score45Mixed
Mixed for holiday weather
Average highs reach 32°C, so days can feel very hot. Sunshine averages 5.1h per day, enough for a balanced month. Rainfall averages 292mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
32°C
Rain
292mm
Sun
5.1h
Sea
30°C
Weather score
45
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 292mm, so showers are a real planning factor.
Some sun
Sunshine averages 5.1h per day, enough for a balanced month.
Warm sea
Sea temperatures average 30°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Bangkok, Thailand with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September32°C average high
September is on the cooler side of Bangkok's year, useful if you prefer less intense daytime heat.
Warmest monthsMarch to May
This stretch sets the upper range for average daytime heat.
Rain
September292mm average rain
September is one of Bangkok's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to April and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September5.1 hours average sun
September is one of Bangkok's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJanuary to April and December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September30°C average sea
September is close to Bangkok's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaApril to October
Sea temperatures are usually near 30°C in this stretch, so swimming comfort is at its strongest.
Weather score
September45 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 November to December
These months have the strongest weather score in the monthly averages.
Hotels in Bangkok, Thailand
Marriott
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The Athenee Hotel, a Luxury Collection Hotel, BangkokBangkok, Thailand