September Weather in Si Rattana, Thailand

Last updated: August 27, 2025

In September, the average temperature in Si Rattana, Thailand is a warm 28°C (82°F), with a minimum of 23°C (74°F) and a maximum reaching 34°C (94°F). Expect a fair amount of rain, with 261 mm (10.3 in) of precipitation spread over 24 days. Humidity often hovers around a high 89%, making for a tropical feel throughout the month.

September Temperature in Si Rattana

In September in Si Rattana, the average temperature is 28°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 23°C (74°F). This pleasant weather makes it an ideal time for outdoor activities and sightseeing, attracting travelers seeking warmth and sunshine.

September Weather in Si Rattana: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Si Rattana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Si Rattana, September typically has an average temperature of 28°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 23°C (74°F).

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

September Precipitation in Si Rattana

In Si Rattana in September, the total precipitation amount is 261 mm (10.3 in) distributed over 24 days.

September Precipitation Trends in Si Rattana

The chart displays monthly precipitation patterns in Si Rattana, 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 Si Rattana, September typically receives around 261 mm (10.3 inches) of precipitation spread over approximately 24 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 Si Rattana

In Si Rattana in September humidity is 89%. With an average temperature of 28°C (82°F), this humidity feels like a thick, warm blanket enveloping you, making every step feel slightly heavier and the air dense, which can be quite stifling for traveling.

September Average Humidity in Si Rattana

This chart illustrates the average monthly humidity levels in Si Rattana, 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 Si Rattana is approximately 89%, 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 Si Rattana

In Si Rattana 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 Si Rattana, you can check here.

Maximum UV Index Levels in Si Rattana for September

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

Data source: Si Rattana 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 Si Rattana Compares to Other Months

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

This table compares monthly weather conditions in Si Rattana, 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 (77°F)	4 mm (0.1 inches)	56%	very high
February Weather	26°C (79°F)	8 mm (0.3 inches)	50%	extreme
March Weather	29°C (84°F)	46 mm (1.8 inches)	41%	extreme
April Weather	29°C (85°F)	63 mm (2.5 inches)	44%	extreme
May Weather	29°C (85°F)	153 mm (6.0 inches)	71%	extreme
June Weather	29°C (84°F)	140 mm (5.5 inches)	83%	extreme
July Weather	28°C (83°F)	190 mm (7.5 inches)	87%	extreme
August Weather	28°C (83°F)	190 mm (7.5 inches)	90%	extreme
September Weather	28°C (82°F)	261 mm (10.3 inches)	89%	extreme
October Weather	27°C (81°F)	165 mm (6.5 inches)	83%	extreme
November Weather	26°C (79°F)	55 mm (2.2 inches)	74%	extreme
December Weather	24°C (76°F)	14 mm (0.5 inches)	68%	very high