September Weather in Chumphon, Thailand

Last updated: August 27, 2025

In September, the average temperature in Chumphon, Thailand is a warm 27°C (81°F), with a minimum of 25°C (77°F) and a maximum of 31°C (88°F). Expect to experience quite a bit of rain, with precipitation totaling 193 mm (7.6 in) spread over 22 days. The air is particularly humid, with an average humidity of 86%, creating a tropical atmosphere.

September Temperature in Chumphon

In September in Chumphon, the average temperature is 27°C (81°F). Maximums can reach 31°C (88°F), while minimums can be as low as 25°C (77°F). This mild and warm climate makes it an ideal destination for travelers seeking pleasant weather.

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

The chart illustrates September temperature patterns in Chumphon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chumphon, September typically has an average temperature of 27°C (81°F), with highs reaching up to 31°C (88°F) and lows dropping to around 25°C (77°F).

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

September Precipitation in Chumphon

In Chumphon in September, the precipitation amount is 193 mm (7.6 in) over the course of 22 days.

September Precipitation Trends in Chumphon

The chart displays monthly precipitation patterns in Chumphon, 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 Chumphon, September typically receives around 193 mm (7.6 inches) of precipitation spread over approximately 22 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 Chumphon

In Chumphon in September, humidity is 86%. With an average temperature of 27°C (81°F), this humidity feels like walking through a steamy blanket, making traveling feel heavy and exhausting as each step absorbs the warm, moist air.

September Average Humidity in Chumphon

This chart illustrates the average monthly humidity levels in Chumphon, 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 Chumphon is approximately 86%, 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 Chumphon

In Chumphon 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 Chumphon, you can check here.

Maximum UV Index Levels in Chumphon for September

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

Data source: Chumphon 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 Chumphon Compares to Other Months

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

This table compares monthly weather conditions in Chumphon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (80°F)	164 mm (6.4 inches)	67%	extreme
February Weather	27°C (80°F)	49 mm (1.9 inches)	66%	extreme
March Weather	28°C (82°F)	46 mm (1.8 inches)	68%	extreme
April Weather	28°C (83°F)	131 mm (5.2 inches)	71%	extreme
May Weather	28°C (83°F)	138 mm (5.4 inches)	77%	extreme
June Weather	28°C (82°F)	129 mm (5.1 inches)	85%	extreme
July Weather	27°C (82°F)	125 mm (4.9 inches)	87%	extreme
August Weather	27°C (81°F)	148 mm (5.8 inches)	88%	extreme
September Weather	27°C (81°F)	193 mm (7.6 inches)	86%	extreme
October Weather	27°C (81°F)	217 mm (8.6 inches)	84%	extreme
November Weather	27°C (81°F)	274 mm (10.8 inches)	83%	extreme
December Weather	26°C (80°F)	162 mm (6.4 inches)	77%	very high