September Weather in Bintulu, Malaysia

Last updated: August 23, 2025

In September, the average temperature in Bintulu, Malaysia hovers around 27°C (81°F). Expect a comfortable minimum of 23°C (74°F) and the occasional peak at 34°C (93°F). However, be prepared for some rain, as 251 mm (9.9 in) of precipitation can be expected over 23 days, contributing to an average humidity of 88%.

September Temperature in Bintulu

In September in Bintulu, the average temperature is 27°C (81°F). Maximums can reach up to 34°C (93°F), while minimums can drop to as low as 23°C (74°F). It's a great time to visit for warm weather and plenty of sunshine!

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

The chart illustrates September temperature patterns in Bintulu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bintulu, September typically has an average temperature of 27°C (81°F), with highs reaching up to 34°C (93°F) and lows dropping to around 23°C (74°F).

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

September Precipitation in Bintulu

In Bintulu in September, the total precipitation amount is 251 mm (9.9 in), occurring over the course of 23 days.

September Precipitation Trends in Bintulu

The chart displays monthly precipitation patterns in Bintulu, 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 Bintulu, September typically receives around 251 mm (9.9 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 Bintulu

In Bintulu in September, humidity is 88%. With an average temperature of 27°C (81°F), this humidity feels like a warm, thick blanket wrapping around you as you travel, making every step feel more laborious and requiring frequent breaks to cool down and hydrate.

September Average Humidity in Bintulu

This chart illustrates the average monthly humidity levels in Bintulu, 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 Bintulu is approximately 88%, 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 Bintulu

In Bintulu 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 Bintulu, you can check here.

Maximum UV Index Levels in Bintulu for September

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

Data source: Bintulu 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 Bintulu Compares to Other Months

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

This table compares monthly weather conditions in Bintulu, 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 (80°F)	251 mm (9.9 inches)	88%	extreme
February Weather	27°C (80°F)	198 mm (7.8 inches)	86%	extreme
March Weather	27°C (81°F)	196 mm (7.7 inches)	88%	extreme
April Weather	27°C (82°F)	183 mm (7.2 inches)	87%	extreme
May Weather	28°C (82°F)	238 mm (9.4 inches)	85%	extreme
June Weather	28°C (82°F)	210 mm (8.3 inches)	85%	extreme
July Weather	28°C (82°F)	213 mm (8.4 inches)	85%	extreme
August Weather	28°C (82°F)	217 mm (8.6 inches)	87%	extreme
September Weather	27°C (81°F)	251 mm (9.9 inches)	88%	extreme
October Weather	27°C (81°F)	260 mm (10.2 inches)	87%	extreme
November Weather	27°C (81°F)	312 mm (12.3 inches)	86%	extreme
December Weather	27°C (80°F)	353 mm (13.9 inches)	88%	extreme