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September Weather in Malinau, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Malinau, Indonesia is a warm 26°C (80°F), with minimums dropping to 21°C (70°F) and maximums soaring to 35°C (95°F). Be prepared for some rain, as the area receives about 290 mm (11.4 in) of precipitation over 27 days, while humidity levels are notably high at around 90%.

September Temperature in Malinau

In September in Malinau, the average temperature is 26°C (80°F). Maximums can reach 35°C (95°F), while minimums can drop to 21°C (70°F). This warm climate is ideal for travelers seeking sunny days and outdoor activities.

September Weather in Malinau: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Malinau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Malinau, September typically has an average temperature of 26°C (80°F), with highs reaching up to 35°C (95°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec797979808079797979808079
Data source: Temperature data for Malinau generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Malinau

In Malinau in September, the total precipitation amount is 290 mm (11.4 in) spread over 27 days.

September Precipitation Trends in Malinau

The chart displays monthly precipitation patterns in Malinau, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Malinau, September typically receives around 290 mm (11.4 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec250213322311312300267316290257298359
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Malinau

In Malinau in September humidity is 90%. With an average temperature of 26°C (80°F), this humidity feels like a heavy blanket enveloping you, making travel seem sticky and exhausting, as each step becomes a challenge against the weight of the air.

September Average Humidity in Malinau

This chart illustrates the average monthly humidity levels in Malinau, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Malinau is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%89%87%87%87%88%90%90%88%88%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Malinau

In Malinau in September, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Malinau.

Maximum UV Index Levels in Malinau for September

The chart shows the monthly maximum UV Index (UVI) for Malinau in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Malinau typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141617161513131515151413
Data source: Malinau September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Malinau Compares to Other Months

Weather in Malinau varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Malinau, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Malinau, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)250 mm (9.9 inches)91%extreme
February Weather26°C (79°F)213 mm (8.4 inches)89%extreme
March Weather26°C (80°F)322 mm (12.7 inches)89%extreme
April Weather27°C (80°F)311 mm (12.3 inches)87%extreme
May Weather27°C (81°F)312 mm (12.3 inches)87%extreme
June Weather26°C (80°F)300 mm (11.8 inches)87%extreme
July Weather26°C (79°F)267 mm (10.5 inches)88%extreme
August Weather26°C (80°F)315 mm (12.4 inches)89%extreme
September Weather26°C (80°F)290 mm (11.4 inches)90%extreme
October Weather27°C (80°F)257 mm (10.1 inches)88%extreme
November Weather26°C (80°F)298 mm (11.7 inches)88%extreme
December Weather26°C (80°F)359 mm (14.1 inches)89%extreme

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