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September Weather in Sumohai, Indonesia

Last updated: August 23, 2025

In Sumohai, Indonesia, the average temperature in September hovers around 25°C (76°F), with a minimum of 19°C (67°F) and a maximum reaching up to 31°C (89°F). Expect significant rainfall, as the region sees 1610 mm (63.4 in) of precipitation spread across 27 days. With an average humidity of 91%, be prepared for a warm and humid atmosphere during your visit!

September Temperature in Sumohai

In September in Sumohai, the average temperature is 25°C (76°F), with maximums reaching 31°C (89°F) and minimums dipping as low as 19°C (67°F). This mild climate makes it a perfect destination for travelers seeking pleasant weather and outdoor activities.

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

The chart illustrates September temperature patterns in Sumohai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumohai, September typically has an average temperature of 25°C (76°F), with highs reaching up to 31°C (89°F) and lows dropping to around 19°C (67°F).
JanFebMarAprMayJunJulAugSepOctNovDec797978787876757676787979
Data source: Temperature data for Sumohai 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 Sumohai

In Sumohai in September, the total precipitation amount is 1610 mm (63.4 in) spread over 27 days.

September Precipitation Trends in Sumohai

The chart displays monthly precipitation patterns in Sumohai, 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 Sumohai, September typically receives around 1610 mm (63.4 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec75260310721127160521351778148216101072881800
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sumohai

In Sumohai in September humidity is 91%. With an average temperature of 25°C (76°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities feel heavy and sticky, often leaving travelers longing for shade or a cool breeze to escape the muggy embrace.

September Average Humidity in Sumohai

This chart illustrates the average monthly humidity levels in Sumohai, 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 Sumohai is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%90%90%90%92%92%92%91%90%90%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sumohai

In Sumohai 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 Sumohai.

Maximum UV Index Levels in Sumohai for September

The chart shows the monthly maximum UV Index (UVI) for Sumohai 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 Sumohai typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151717161311121315151514
Data source: Sumohai 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 Sumohai Compares to Other Months

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

This table compares monthly weather conditions in Sumohai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)752 mm (29.6 inches)90%extreme
February Weather26°C (79°F)603 mm (23.7 inches)90%extreme
March Weather26°C (79°F)1072 mm (42.2 inches)90%extreme
April Weather26°C (79°F)1127 mm (44.4 inches)90%extreme
May Weather25°C (78°F)1605 mm (63.2 inches)90%extreme
June Weather25°C (76°F)2135 mm (84.1 inches)92%extreme
July Weather24°C (76°F)1778 mm (70.0 inches)92%extreme
August Weather24°C (76°F)1482 mm (58.3 inches)92%extreme
September Weather25°C (76°F)1610 mm (63.4 inches)91%extreme
October Weather25°C (78°F)1072 mm (42.2 inches)90%extreme
November Weather26°C (79°F)881 mm (34.7 inches)90%extreme
December Weather26°C (79°F)800 mm (31.5 inches)90%extreme

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