Sylhet weather in September 2025

Expect daytime maximum temperatures of 31°C in Sylhet, Bangladesh in September and very high heat and humidity based on long-term weather averages. There are 4 hours of sunshine per day on average with 12 days with some rainfall and typically 502 mm of rainfall in the month.

  • 31°C maximum daytime temperature in September in Sylhet31
    31°C max day temperature
  • 4 hours of sunshine per day
  • 12 days with some rainfall in September in Sylhet12
    12 days with some rainfall
  • 25°C minimum night-time temperature in September in Sylhet25
    25°C min night temperature
  • 12 hours of daylight per day in September in Sylhet12
    12 hours of daylight per day
  • Very high heat & humidity in September in SylhetVH
    Very High heat & humidity
  • 502 mm monthly rainfall in September in Sylhet502
    502 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in September in Sylhet11
    11 (Extreme) UV index

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The September weather guide for Bangladesh (Sylhet) 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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How hot is it in Sylhet in September?

Daytime temperatures usually reach 31°C in Sylhet in September with very high heat and humidity, falling to 25°C at night.

How sunny is it in Sylhet in September?

There are normally 4 hours of bright sunshine each day in Sylhet in September - that's 33% of daylight hours.

Does it rain in Sylhet in September?

There are usually 12 days with some rain in Sylhet in September and the average monthly rainfall is 502mm.

Sylhet September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:33 19:11
Monday, 15th September 2025 06:39 18:57
Tuesday, 30th September 2025 06:44 18:41

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