September Weather in Sirindhorn, Thailand

Last updated: August 27, 2025

In September, the average temperature in Sirindhorn, Thailand reaches a warm 27°C (82°F). Expect a comfortable minimum of 23°C (73°F), while highs can soar to 34°C (94°F). However, be prepared for the rainy season, with 343 mm (13.5 in) of precipitation spread over 26 days and an average humidity level of 91%.

September Temperature in Sirindhorn

In September in Sirindhorn, the average temperature is 27°C (82°F). Maximums can reach 34°C (94°F), and minimums can be as low as 23°C (73°F). This climate makes it an ideal destination for travelers seeking warm weather and plenty of sunshine.

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

The chart illustrates September temperature patterns in Sirindhorn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sirindhorn, September typically has an average temperature of 27°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 23°C (73°F).

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

September Precipitation in Sirindhorn

In Sirindhorn in September, the total precipitation amount is 343 mm (13.5 in) over the course of 26 days.

September Precipitation Trends in Sirindhorn

The chart displays monthly precipitation patterns in Sirindhorn, 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 Sirindhorn, September typically receives around 343 mm (13.5 inches) of precipitation spread over approximately 26 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Sirindhorn

In Sirindhorn in September, humidity is 91%. With an average temperature of 27°C (82°F), this humidity feels like a heavy, warm blanket wrapping around you, making outdoor adventures feel sticky and exhausting, and prompting you to seek respite in shaded areas or air-conditioned spaces.

September Average Humidity in Sirindhorn

This chart illustrates the average monthly humidity levels in Sirindhorn, 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 Sirindhorn is approximately 91%, 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 Sirindhorn

In Sirindhorn 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 Sirindhorn, you can check here.

Maximum UV Index Levels in Sirindhorn for September

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

Data source: Sirindhorn 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 Sirindhorn Compares to Other Months

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

This table compares monthly weather conditions in Sirindhorn, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (78°F)	4 mm (0.2 inches)	74%	very high
February Weather	26°C (79°F)	5 mm (0.2 inches)	65%	extreme
March Weather	29°C (84°F)	36 mm (1.4 inches)	53%	extreme
April Weather	29°C (85°F)	84 mm (3.3 inches)	49%	extreme
May Weather	29°C (84°F)	177 mm (7.0 inches)	72%	extreme
June Weather	28°C (83°F)	248 mm (9.8 inches)	86%	extreme
July Weather	27°C (81°F)	378 mm (14.9 inches)	91%	extreme
August Weather	27°C (81°F)	375 mm (14.8 inches)	93%	extreme
September Weather	27°C (82°F)	343 mm (13.5 inches)	91%	extreme
October Weather	27°C (81°F)	208 mm (8.2 inches)	88%	extreme
November Weather	26°C (79°F)	47 mm (1.9 inches)	85%	very high
December Weather	25°C (77°F)	8 mm (0.3 inches)	82%	very high