Miri weather in September 2025

Expect daytime maximum temperatures of 31°C in Miri, Malaysia in September and very high heat and humidity based on long-term weather averages. There are 6 hours of sunshine per day on average with 21 days with some rainfall and typically 238 mm of rainfall in the month.

  • 31°C maximum daytime temperature in September in Miri31
    31°C max day temperature
  • 6 hours of sunshine per day
  • 21 days with some rainfall in September in Miri21
    21 days with some rainfall
  • 23°C minimum night-time temperature in September in Miri23
    23°C min night temperature
  • 12 hours of daylight per day in September in Miri12
    12 hours of daylight per day
  • Very high heat & humidity in September in MiriVH
    Very High heat & humidity
  • 238 mm monthly rainfall in September in Miri238
    238 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Miri11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Miri29
    29°C sea temperature

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The September weather guide for Malaysia (Miri) 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 Miri in September?

Daytime temperatures usually reach 31°C in Miri in September with very high heat and humidity, falling to 23°C at night.

How sunny is it in Miri in September?

There are normally 6 hours of bright sunshine each day in Miri in September - that's 50% of daylight hours.

How warm is the sea around Miri in September?

The average sea temperature around Miri in September is 29°C.

Does it rain in Miri in September?

There are usually 21 days with some rain in Miri in September and the average monthly rainfall is 238mm.

Miri September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:18 18:30
Monday, 15th September 2025 06:15 18:23
Tuesday, 30th September 2025 06:12 18:16

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