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September Weather in Sumbawa Besar, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Sumbawa Besar, Indonesia hovers around 27°C (80°F), with a comfortable minimum of 21°C (69°F) and a warm maximum reaching 34°C (93°F). You'll experience 7 mm (0.3 in) of precipitation over just 1 day, and the average humidity remains at a pleasant 71%. Perfect weather for exploring!

September Temperature in Sumbawa Besar

In September in Sumbawa Besar, the average temperature is 27°C (80°F). Maximums can reach 34°C (93°F) and minimums can be as low as 21°C (69°F). This pleasant climate makes Sumbawa Besar an ideal destination for outdoor adventures and leisurely strolls.

September Weather in Sumbawa Besar: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sumbawa Besar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumbawa Besar, September typically has an average temperature of 27°C (80°F), with highs reaching up to 34°C (93°F) and lows dropping to around 21°C (69°F).
JanFebMarAprMayJunJulAugSepOctNovDec797979808079787880828280
Data source: Temperature data for Sumbawa Besar 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 Sumbawa Besar

In Sumbawa Besar in September, the precipitation amount is 7 mm (0.3 in) over the course of 1 day.

September Precipitation Trends in Sumbawa Besar

The chart displays monthly precipitation patterns in Sumbawa Besar, 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 Sumbawa Besar, September typically receives around 7 mm (0.3 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec32534925998321744723124284
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sumbawa Besar

In Sumbawa Besar in September, humidity is 71%. With an average temperature of 27°C (80°F), this humidity feels like a warm, thick blanket enveloping you, making outdoor activities more challenging and requiring frequent breaks to stay hydrated.

September Average Humidity in Sumbawa Besar

This chart illustrates the average monthly humidity levels in Sumbawa Besar, 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 Sumbawa Besar is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%84%82%80%79%76%73%72%71%69%69%72%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sumbawa Besar

In Sumbawa Besar in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Sumbawa Besar, you can check here.

Maximum UV Index Levels in Sumbawa Besar for September

The chart shows the monthly maximum UV Index (UVI) for Sumbawa Besar 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 Sumbawa Besar typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616151310121314151414
Data source: Sumbawa Besar 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 Sumbawa Besar Compares to Other Months

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

This table compares monthly weather conditions in Sumbawa Besar, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)325 mm (12.8 inches)78%extreme
February Weather26°C (79°F)348 mm (13.7 inches)84%extreme
March Weather26°C (79°F)259 mm (10.2 inches)82%extreme
April Weather27°C (80°F)98 mm (3.8 inches)80%extreme
May Weather27°C (80°F)32 mm (1.3 inches)79%extreme
June Weather26°C (79°F)16 mm (0.6 inches)76%very high
July Weather25°C (78°F)4 mm (0.2 inches)73%extreme
August Weather26°C (79°F)4 mm (0.1 inches)72%extreme
September Weather27°C (80°F)7 mm (0.3 inches)71%extreme
October Weather28°C (82°F)23 mm (0.9 inches)69%extreme
November Weather28°C (82°F)124 mm (4.9 inches)69%extreme
December Weather27°C (81°F)284 mm (11.2 inches)72%extreme

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