September Weather in Miri, Malaysia

Last updated: August 23, 2025

In Miri, Malaysia, the average temperature in September hovers around 27°C (81°F), with lows of 25°C (77°F) and highs reaching up to 31°C (87°F). Expect a significant precipitation amount of 255 mm (10.1 in), spread over 23 days, contributing to an average humidity of 85%. Prepare for a warm and wet month!

September Temperature in Miri

In September in Miri, the average temperature is 27°C (81°F). Maximum temperatures can reach 31°C (87°F) and the minimum can dip to as low as 25°C (77°F). This mild and warm climate makes Miri an ideal destination for travelers seeking pleasant weather.

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

The chart illustrates September temperature patterns in Miri, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Miri, September typically has an average temperature of 27°C (81°F), with highs reaching up to 31°C (87°F) and lows dropping to around 25°C (77°F).

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

September Precipitation in Miri

In Miri in September, the precipitation amount is 255 mm (10.1 in) over the course of 23 days.

September Precipitation Trends in Miri

The chart displays monthly precipitation patterns in Miri, 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 Miri, September typically receives around 255 mm (10.1 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 Miri

In Miri in September humidity is 85%. With an average temperature of 27°C (81°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier as sweat clings to your skin and the air feels almost tangible, which can be quite challenging for traveling.

September Average Humidity in Miri

This chart illustrates the average monthly humidity levels in Miri, 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 Miri is approximately 85%, 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 Miri

In Miri 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 Miri, you can check here.

Maximum UV Index Levels in Miri for September

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

Data source: Miri 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 Miri Compares to Other Months

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

This table compares monthly weather conditions in Miri, 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)	192 mm (7.6 inches)	86%	extreme
February Weather	26°C (80°F)	108 mm (4.3 inches)	87%	extreme
March Weather	27°C (80°F)	103 mm (4.1 inches)	87%	extreme
April Weather	27°C (81°F)	161 mm (6.3 inches)	84%	extreme
May Weather	28°C (82°F)	168 mm (6.6 inches)	80%	extreme
June Weather	28°C (82°F)	249 mm (9.8 inches)	81%	extreme
July Weather	28°C (82°F)	193 mm (7.6 inches)	80%	extreme
August Weather	28°C (82°F)	193 mm (7.6 inches)	82%	extreme
September Weather	27°C (81°F)	255 mm (10.1 inches)	85%	extreme
October Weather	27°C (81°F)	276 mm (10.9 inches)	81%	extreme
November Weather	27°C (81°F)	277 mm (10.9 inches)	81%	extreme
December Weather	27°C (80°F)	323 mm (12.7 inches)	84%	extreme