September Weather in Sulu, China

Last updated: August 23, 2025

In Sulu, China, the average temperature in September hovers around 6°C (42°F). Expect chilly conditions, with minimums plummeting to -20°C (-4°F) and maximums reaching a comfortable 17°C (63°F). This month sees 133 mm (5.2 in) of precipitation spread over 23 days, contributing to a notably high average humidity of 88%. Prepare for a mix of cool temperatures and wet weather!

September Temperature in Sulu

In September in Sulu, the average temperature is 6°C (42°F). The maximum can reach 17°C (63°F) and the minimum can be as low as -20°C (-4°F). Be prepared for a wide range of temperatures and pack accordingly to enjoy your travels!

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

The chart illustrates September temperature patterns in Sulu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sulu, September typically has an average temperature of 6°C (42°F), with highs reaching up to 17°C (63°F) and lows dropping to around -20°C (-4°F).

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

September Precipitation in Sulu

In Sulu in September, the total precipitation amount is 133 mm (5.2 in) spread over 23 days.

September Precipitation Trends in Sulu

The chart displays monthly precipitation patterns in Sulu, 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 Sulu, September typically receives around 133 mm (5.2 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 Sulu

In Sulu in September, humidity is 88%. With an average temperature of 6°C (42°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as the cold air clings to your skin and saps your energy.

September Average Humidity in Sulu

This chart illustrates the average monthly humidity levels in Sulu, 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 Sulu 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 Sulu

In Sulu 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 Sulu.

Maximum UV Index Levels in Sulu for September

The chart shows the monthly maximum UV Index (UVI) for Sulu 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 Sulu typically reaches 15, which falls under the extreme exposure category.

Data source: Sulu 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 Sulu Compares to Other Months

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

This table compares monthly weather conditions in Sulu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-18°C (0°F)	8 mm (0.3 inches)	68%	high
February Weather	-15°C (6°F)	15 mm (0.6 inches)	78%	very high
March Weather	-11°C (12°F)	20 mm (0.8 inches)	72%	extreme
April Weather	-6°C (22°F)	27 mm (1.0 inches)	70%	extreme
May Weather	0°C (33°F)	72 mm (2.8 inches)	81%	extreme
June Weather	5°C (42°F)	126 mm (5.0 inches)	86%	extreme
July Weather	9°C (48°F)	148 mm (5.8 inches)	87%	extreme
August Weather	9°C (48°F)	156 mm (6.1 inches)	87%	extreme
September Weather	6°C (42°F)	133 mm (5.2 inches)	88%	extreme
October Weather	-2°C (28°F)	58 mm (2.3 inches)	76%	extreme
November Weather	-14°C (7°F)	16 mm (0.6 inches)	69%	very high
December Weather	-18°C (0°F)	13 mm (0.5 inches)	69%	high