September Weather in Serawai, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Serawai, Indonesia is a warm 28°C (82°F), with minimums dipping to 24°C (76°F) and maximums reaching 34°C (94°F). Expect 177 mm (7.0 in) of precipitation spread over 23 days, contributing to an average humidity level of 83%. Get ready for a tropical experience!

September Temperature in Serawai

In September in Serawai, the average temperature is 28°C (82°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 24°C (76°F). This warm weather makes it an ideal time for traveling and enjoying outdoor activities in Serawai.

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

The chart illustrates September temperature patterns in Serawai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Serawai, September typically has an average temperature of 28°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 24°C (76°F).

Data source: Temperature data for Serawai generated using information from the Copernicus Climate Change Service.

September Precipitation in Serawai

In Serawai in September, the total precipitation amount is 177 mm (7.0 in), spread over a period of 23 days.

September Precipitation Trends in Serawai

The chart displays monthly precipitation patterns in Serawai, 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 Serawai, September typically receives around 177 mm (7.0 inches) of precipitation spread over approximately 23 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Serawai

In Serawai in September humidity is 83%. With an average temperature of 28°C (82°F), this humidity feels like stepping into a warm, thick blanket, making travel languid and drenched in sweat.

September Average Humidity in Serawai

This chart illustrates the average monthly humidity levels in Serawai, 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 Serawai is approximately 83%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Serawai

In Serawai 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 Serawai, you can check here.

Maximum UV Index Levels in Serawai for September

The chart shows the monthly maximum UV Index (UVI) for Serawai 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 Serawai typically reaches 14, which falls under the extreme exposure category.

Data source: Serawai 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 Serawai Compares to Other Months

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

This table compares monthly weather conditions in Serawai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	147 mm (5.8 inches)	81%	extreme
February Weather	28°C (82°F)	60 mm (2.4 inches)	76%	extreme
March Weather	28°C (83°F)	92 mm (3.6 inches)	77%	extreme
April Weather	28°C (84°F)	155 mm (6.1 inches)	73%	extreme
May Weather	28°C (83°F)	181 mm (7.1 inches)	73%	extreme
June Weather	29°C (84°F)	93 mm (3.7 inches)	77%	extreme
July Weather	28°C (84°F)	100 mm (3.9 inches)	75%	extreme
August Weather	28°C (83°F)	137 mm (5.4 inches)	79%	extreme
September Weather	28°C (82°F)	177 mm (7.0 inches)	83%	extreme
October Weather	28°C (82°F)	199 mm (7.8 inches)	82%	extreme
November Weather	27°C (81°F)	280 mm (11.0 inches)	83%	extreme
December Weather	27°C (81°F)	250 mm (9.9 inches)	85%	extreme