September Weather in Chaiya, Thailand

Last updated: August 27, 2025

In September, the average temperature in Chaiya, Thailand is a warm 27°C (82°F), with a minimum of 25°C (77°F) and a maximum soaring up to 32°C (89°F). Expect a fair amount of rainfall, with 141 mm (5.6 in) of precipitation over about 21 days. It's also worth noting that the average humidity stands at a high 87%, contributing to the overall tropical feel of the season.

September Temperature in Chaiya

In September in Chaiya, the average temperature is 27°C (82°F). The maximum can reach 32°C (89°F), while the minimum can be as low as 25°C (77°F). This pleasant weather makes it an ideal time for travelers to explore the beauty of Chaiya.

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

The chart illustrates September temperature patterns in Chaiya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chaiya, September typically has an average temperature of 27°C (82°F), with highs reaching up to 32°C (89°F) and lows dropping to around 25°C (77°F).

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

September Precipitation in Chaiya

In Chaiya in September, the precipitation amount is 141 mm (5.6 in) occurring over a span of 21 days.

September Precipitation Trends in Chaiya

The chart displays monthly precipitation patterns in Chaiya, 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 Chaiya, September typically receives around 141 mm (5.6 inches) of precipitation spread over approximately 21 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 Chaiya

In Chaiya in September, humidity is 87%. With an average temperature of 27°C (82°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel sticky and draining; it's essential to stay hydrated and take breaks in shaded areas to truly enjoy your exploration.

September Average Humidity in Chaiya

This chart illustrates the average monthly humidity levels in Chaiya, 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 Chaiya is approximately 87%, 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 Chaiya

In Chaiya 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 Chaiya, you can check here.

Maximum UV Index Levels in Chaiya for September

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

Data source: Chaiya 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 Chaiya Compares to Other Months

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

This table compares monthly weather conditions in Chaiya, 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)	161 mm (6.3 inches)	72%	extreme
February Weather	27°C (81°F)	37 mm (1.5 inches)	68%	extreme
March Weather	28°C (82°F)	43 mm (1.7 inches)	68%	extreme
April Weather	28°C (83°F)	171 mm (6.7 inches)	69%	extreme
May Weather	28°C (83°F)	120 mm (4.7 inches)	77%	extreme
June Weather	28°C (83°F)	98 mm (3.9 inches)	86%	extreme
July Weather	28°C (83°F)	79 mm (3.1 inches)	86%	extreme
August Weather	28°C (82°F)	83 mm (3.3 inches)	88%	extreme
September Weather	27°C (82°F)	141 mm (5.6 inches)	87%	extreme
October Weather	27°C (81°F)	226 mm (8.9 inches)	86%	extreme
November Weather	27°C (81°F)	365 mm (14.4 inches)	87%	extreme
December Weather	27°C (80°F)	241 mm (9.5 inches)	83%	extreme