Jakarta weather in September 2026

Expect daytime maximum temperatures of 91°F in Jakarta, Indonesia in September and very high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 3.7 inches of rainfall in the month.

  • 91°F maximum daytime temperature in September in Jakarta91
    91°F max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in September in Jakarta8
    8 days with some rainfall
  • 73°F minimum night-time temperature in September in Jakarta73
    73°F min night temperature
  • 12 hours of daylight per day in September in Jakarta12
    12 hours of daylight per day
  • Very high heat & humidity in September in JakartaVH
    Very High heat & humidity
  • 3.7 inches monthly rainfall in September in Jakarta3.7
    3.7 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Jakarta11
    11+ (Extreme) UV index
  • 84°F sea temperature in September in Jakarta84
    84°F sea temperature

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The September weather guide for Indonesia (Jakarta) 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)  |  Imperial (°F)

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How hot is it in Jakarta in September?

Daytime temperatures usually reach 91°F in Jakarta in September with very high heat and humidity, falling to 73°F at night.

How sunny is it in Jakarta in September?

There are normally 9 hours of bright sunshine each day in Jakarta in September - that's 71% of daylight hours.

How warm is the sea around Jakarta in September?

The average sea temperature around Jakarta in September is 84°F.

Does it rain in Jakarta in September?

There are usually 8 days with some rain in Jakarta in September and the average monthly rainfall is 3.7 inches.

Jakarta September sunrise & sunset times

Browse the sunrise and sunset times for Jakarta in September 2026. Select a month to view Jakarta sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st September 2026 05:53 17:53
Tuesday, 15th September 2026 05:46 17:50
Wednesday, 30th September 2026 05:38 17:47

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