Bangkok weather in September 2025

Expect daytime maximum temperatures of 32°C in Bangkok in September and very high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 20 days with some rainfall and typically 292 mm of rainfall in the month.

  • 32°C maximum daytime temperature in September in Bangkok32
    32°C max day temperature
  • 5 hours of sunshine per day
  • 20 days with some rainfall in September in Bangkok20
    20 days with some rainfall
  • 25°C minimum night-time temperature in September in Bangkok25
    25°C min night temperature
  • 12 hours of daylight per day in September in Bangkok12
    12 hours of daylight per day
  • Very high heat & humidity in September in BangkokVH
    Very High heat & humidity
  • 292 mm monthly rainfall in September in Bangkok292
    292 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Bangkok11
    11+ (Extreme) UV index

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The September weather guide for Thailand (Bangkok) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Thailand

How hot is it in Bangkok in September?

Daytime temperatures usually reach 32°C in Bangkok in September with very high heat and humidity, falling to 25°C at night.

How sunny is it in Bangkok in September?

There are normally 5 hours of bright sunshine each day in Bangkok in September - that's 43% of daylight hours.

Does it rain in Bangkok in September?

There are usually 20 days with some rain in Bangkok in September and the average monthly rainfall is 292mm.

What is the chance of a typhoon in Bangkok in September?

On average less than 1 day in September in Bangkok is likely to be affected by the passage of one or more tropical storms.

Bangkok September sunrise & sunset times

Browse the sunrise and sunset times for Bangkok in September 2025. Select a month to view Bangkok sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:06 18:29
Monday, 15th September 2025 06:07 18:19
Tuesday, 30th September 2025 06:07 18:08

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