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September Weather in Si Sawat, Thailand

Last updated: August 27, 2025

In Si Sawat, Thailand, the average temperature in September hovers around 26°C (79°F), with a comfortable minimum of 22°C (71°F) and a warm maximum of 33°C (92°F). During this month, you can expect precipitation to total about 251 mm (9.9 in) over approximately 23 days, contributing to a high humidity level of 86%.

September Temperature in Si Sawat

In September in Si Sawat, the average temperature is 26°C (79°F), with maximums reaching up to 33°C (92°F) and minimums dropping as low as 22°C (71°F). This pleasant climate makes it an ideal time for travelers to explore the outdoor attractions and enjoy the local scenery.

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

The chart illustrates September temperature patterns in Si Sawat, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Si Sawat, September typically has an average temperature of 26°C (79°F), with highs reaching up to 33°C (92°F) and lows dropping to around 22°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec767882828179787879797774
Data source: Temperature data for Si Sawat generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Si Sawat

In Si Sawat in September, the total precipitation amount is 251 mm (9.9 in), occurring over the course of 23 days.

September Precipitation Trends in Si Sawat

The chart displays monthly precipitation patterns in Si Sawat, 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 Sawat, September typically receives around 251 mm (9.9 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec171022781271972302732511934614
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Si Sawat

In Si Sawat in September, humidity is 86%. With an average temperature of 26°C (79°F), this humidity feels like a warm, heavy blanket clinging to your skin, making even short walks a challenge and turning travel into a sticky, sweat-inducing experience.

September Average Humidity in Si Sawat

This chart illustrates the average monthly humidity levels in Si Sawat, 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 Sawat is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec53%54%56%65%77%87%89%89%86%79%69%60%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Si Sawat

In Si Sawat 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 Sawat, you can check here.

Maximum UV Index Levels in Si Sawat for September

The chart shows the monthly maximum UV Index (UVI) for Si Sawat 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 Sawat typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11131414141414151413109
Data source: Si Sawat 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 Sawat Compares to Other Months

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

This table compares monthly weather conditions in Si Sawat, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)17 mm (0.7 inches)53%extreme
February Weather26°C (79°F)10 mm (0.4 inches)54%extreme
March Weather28°C (82°F)22 mm (0.9 inches)56%extreme
April Weather28°C (83°F)78 mm (3.1 inches)65%extreme
May Weather27°C (82°F)127 mm (5.0 inches)77%extreme
June Weather26°C (80°F)197 mm (7.7 inches)86%extreme
July Weather25°C (78°F)230 mm (9.0 inches)89%extreme
August Weather25°C (78°F)273 mm (10.7 inches)89%extreme
September Weather26°C (79°F)251 mm (9.9 inches)86%extreme
October Weather26°C (79°F)193 mm (7.6 inches)78%extreme
November Weather25°C (78°F)46 mm (1.8 inches)69%very high
December Weather24°C (75°F)14 mm (0.5 inches)60%very high

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