Sibu weather in September 2025

Expect daytime maximum temperatures of 31°C in Sibu, Malaysia 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 22 days with some rainfall and typically 295 mm of rainfall in the month.

  • 31°C maximum daytime temperature in September in Sibu31
    31°C max day temperature
  • 5 hours of sunshine per day
  • 22 days with some rainfall in September in Sibu22
    22 days with some rainfall
  • 22°C minimum night-time temperature in September in Sibu22
    22°C min night temperature
  • 12 hours of daylight per day in September in Sibu12
    12 hours of daylight per day
  • Very high heat & humidity in September in SibuVH
    Very High heat & humidity
  • 295 mm monthly rainfall in September in Sibu295
    295 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Sibu11
    11+ (Extreme) UV index

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The September weather guide for Malaysia (Sibu) 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 Malaysia

How hot is it in Sibu in September?

Daytime temperatures usually reach 31°C in Sibu in September with very high heat and humidity, falling to 22°C at night.

How sunny is it in Sibu in September?

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

Does it rain in Sibu in September?

There are usually 22 days with some rain in Sibu in September and the average monthly rainfall is 295mm.

Sibu September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:28 18:37
Monday, 15th September 2025 06:24 18:32
Tuesday, 30th September 2025 06:20 18:25

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