Penang weather in September 2025

Expect daytime maximum temperatures of 30°C in Penang, 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 23 days with some rainfall and typically 325 mm of rainfall in the month.

  • 30°C maximum daytime temperature in September in Penang30
    30°C max day temperature
  • 5 hours of sunshine per day
  • 23 days with some rainfall in September in Penang23
    23 days with some rainfall
  • 22°C minimum night-time temperature in September in Penang22
    22°C min night temperature
  • 12 hours of daylight per day in September in Penang12
    12 hours of daylight per day
  • Very high heat & humidity in September in PenangVH
    Very High heat & humidity
  • 325 mm monthly rainfall in September in Penang325
    325 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Penang11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Penang29
    29°C sea temperature

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

Daytime temperatures usually reach 30°C in Penang in September with very high heat and humidity, falling to 22°C at night.

How sunny is it in Penang in September?

There are normally 5 hours of bright sunshine each day in Penang in September - that's 44% of daylight hours.

How warm is the sea around Penang in September?

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

Does it rain in Penang in September?

There are usually 23 days with some rain in Penang in September and the average monthly rainfall is 325mm.

Penang September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 07:12 19:25
Monday, 15th September 2025 07:09 19:18
Tuesday, 30th September 2025 07:06 19:11

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