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Indonesia temperatures in September

Indonesia in September has maximum daytime temperatures ranging from high in Ambon with 26°C (79°F) to very high temperatures in Medan with 33°C (91°F). Nighttime temperatures generally drop to 23°C (73°F) in Medan and 24°C (76°F) in Ambon.

What is the temperature of the different cities in Indonesia in September?

Find the average daytime temperatures in September for the most popular destinations in Indonesia on the map below. Click on a destination dot for more detailed information.

Weather conditions Weather
Temperatures
Precipitation
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Legend very warm warm pleasant moderate cold very cold
Very warm means maximum temperatures above 30ºC (86ºF). Warm: 22ºC (72ºF) to 30ºC (86ºF). Pleasant: 18ºC (64ºF) to 22ºC (72ºF) Moderate: 12ºC (54ºF) to 18ºC (64ºF). Cold: 2ºC (36ºF) to 12ºC (54ºF). Very cold: lower than 2ºC (36ºF)

  • What is the warmest city in September in Indonesia?
    • Medan tops the warmest city list in our database with average maximum daytime temperatures around 33°C (91°F) and a minimum nighttime temperature of around 23°C (73°F).

  • What is the coldest city in September in Indonesia?
    • The coldest city in September in Indonesia is Ambon when we check our database. The maximum daytime temperatures are around 26°C (79°F) and minimum nighttime temperatures fall around 24°C (76°F).

  • How much sun does Indonesia get in September?
    • September is generally a sunny month with an average of 249 hours of sunshine in Ubud during the whole month.

  • How warm is the water in September?
    • The water temperature averages approximately 29°C (84°F) in Jakarta this month, an ideal temperature for swimming.

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