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The weather in September in Indonesia
It's hot in September in Indonesia with an average temperature of 30°C. Temperatures this month range from a low of 29°C to a high of 31°C. At night, you can expect temperatures between 23°C and 26°C.
September is a good month to be in Indonesia for sunny weather. You’ll have high temperatures and not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Indonesia. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 33°C in 2016, Indonesia reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 27°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 16°C to a highest value of 27°C.
Rainfall amount
In September, there is an average of 88 mm of precipitation, spread over 13 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Daily weather in September for Indonesia
Click on any day in September to get detailed info about the usual weather on that day in Indonesia. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Indonesia | New York | |
|---|---|---|
| Average temperature | 30°C | 27°C |
| Max. temperature | 31°C | 31°C |
| Min. temperature | 23°C | -5°C |
| Total precipitation | 88 mm | 57 mm |
| Rainy days | 13 days | 9 days |
Start of September
The month of September starts in Indonesia with hot temps, averaging around 30°C during the day and nights around 25°C.
Mid September
By mid-September, daytime temps stay steady at around 30°C, with nights around 25°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of September
By the end of September, the average daytime temperature in Indonesia is around 31°C, while nighttime temps are about 25°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Indonesia for all months and discover the best travel time
The climate in Indonesia is based on weather data from Bali. Other places, like Java, Gili Air or Lombok, might have different weather. You can check out all destinations in Indonesia to get the full picture of the climate.
Temperature charts
These charts show the average temperatures in September in Indonesia. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Indonesia
Temperature in September in Indonesia over the years
Precipitation charts
These charts show the average amount of precipitation in September in Indonesia. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Indonesia
Total precipitation in September in Indonesia over the years
Daily UV index in September in Indonesia
This chart shows the average daily UV index in September in Indonesia, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Indonesia
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Average weather in Indonesia by month
Click on a month below to see detailed weather info for Indonesia. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.