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September Weather in Surian, Indonesia

Last updated: August 23, 2025

In Surian, Indonesia, the average temperature in September is a pleasant 21°C (70°F). Expect a minimum of 16°C (61°F) and a maximum of 28°C (83°F). However, be prepared for some rain, as the area experiences 242 mm (9.5 in) of precipitation over approximately 24 days. With an average humidity level of 88%, it's advisable to embrace the cozy ambiance of this vibrant locale!

September Temperature in Surian

In September in Surian, the average temperature is 21°C (70°F). Maximums can reach 28°C (83°F), while minimums can drop to 16°C (61°F). This climate makes it an ideal time for travelers seeking pleasant weather and comfortable outdoor activities.

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

The chart illustrates September temperature patterns in Surian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Surian, September typically has an average temperature of 21°C (70°F), with highs reaching up to 28°C (83°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec707070717170707070707070
Data source: Temperature data for Surian 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 Surian

In Surian, in September, the precipitation amount is 242 mm (9.5 in) spread over 24 days.

September Precipitation Trends in Surian

The chart displays monthly precipitation patterns in Surian, 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 Surian, September typically receives around 242 mm (9.5 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec276323424368320199147194242298427410
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Surian

In Surian in September, humidity is 88%. With an average temperature of 21°C (70°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and slightly stifling, which can be quite challenging for travelers.

September Average Humidity in Surian

This chart illustrates the average monthly humidity levels in Surian, 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 Surian is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%85%84%83%86%86%86%88%88%90%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Surian

In Surian 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 Surian.

Maximum UV Index Levels in Surian for September

The chart shows the monthly maximum UV Index (UVI) for Surian 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 Surian typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151717171513131515161515
Data source: Surian 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 Surian Compares to Other Months

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

This table compares monthly weather conditions in Surian, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (70°F)276 mm (10.9 inches)89%extreme
February Weather21°C (70°F)322 mm (12.7 inches)84%extreme
March Weather21°C (71°F)424 mm (16.7 inches)84%extreme
April Weather22°C (71°F)368 mm (14.5 inches)83%extreme
May Weather22°C (71°F)320 mm (12.6 inches)85%extreme
June Weather21°C (71°F)199 mm (7.8 inches)86%extreme
July Weather21°C (70°F)147 mm (5.8 inches)86%extreme
August Weather21°C (70°F)194 mm (7.6 inches)88%extreme
September Weather21°C (70°F)242 mm (9.5 inches)88%extreme
October Weather21°C (70°F)298 mm (11.7 inches)90%extreme
November Weather21°C (70°F)427 mm (16.8 inches)89%extreme
December Weather21°C (70°F)410 mm (16.1 inches)88%extreme

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