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September Weather in Khon Sawan, Thailand

Last updated: August 27, 2025

In Khon Sawan, Thailand, the average temperature in September hovers around 28°C (82°F), making it a warm destination. However, temperatures can vary significantly, with a minimum of 23°C (74°F) and a maximum reaching 35°C (95°F). Visitors should also be prepared for considerable rainfall, averaging 281 mm (11.1 in) over 24 days, coupled with high humidity at 88%. Enjoy the warmth, but don’t forget your umbrella!

September Temperature in Khon Sawan

In September, in Khon Sawan, the average temperature is 28°C (82°F). Maximums can reach 35°C (95°F), and minimums can be as low as 23°C (74°F). This makes Khon Sawan a warm and pleasant destination for travelers looking to enjoy a sunny getaway.

September Weather in Khon Sawan: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Khon Sawan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Khon Sawan, September typically has an average temperature of 28°C (82°F), with highs reaching up to 35°C (95°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec757883848484838282807874
Data source: Temperature data for Khon Sawan 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 Khon Sawan

In Khon Sawan in September, the precipitation amount is 281 mm (11.1 in) spread over 24 days, indicating a significant frequency of rainy weather during that period.

September Precipitation Trends in Khon Sawan

The chart displays monthly precipitation patterns in Khon Sawan, 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 Khon Sawan, September typically receives around 281 mm (11.1 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec663266146131225188281186287
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Khon Sawan

In Khon Sawan in September humidity is 88%. With an average temperature of 28°C (82°F), this humidity feels like walking through a warm, heavy blanket that clings to your skin, making even the simplest activities feel exhausting and necessitating frequent breaks in the shade.

September Average Humidity in Khon Sawan

This chart illustrates the average monthly humidity levels in Khon Sawan, 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 Khon Sawan is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec50%47%41%51%76%83%80%86%88%79%68%59%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Khon Sawan

In Khon Sawan 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 Khon Sawan, you can check here.

Maximum UV Index Levels in Khon Sawan for September

The chart shows the monthly maximum UV Index (UVI) for Khon Sawan 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 Khon Sawan typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9121414141314141413109
Data source: Khon Sawan 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 Khon Sawan Compares to Other Months

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

This table compares monthly weather conditions in Khon Sawan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)6 mm (0.2 inches)50%very high
February Weather25°C (78°F)6 mm (0.2 inches)47%extreme
March Weather28°C (83°F)32 mm (1.3 inches)41%extreme
April Weather29°C (84°F)66 mm (2.6 inches)51%extreme
May Weather29°C (84°F)146 mm (5.7 inches)76%extreme
June Weather29°C (84°F)131 mm (5.1 inches)83%extreme
July Weather28°C (83°F)225 mm (8.9 inches)80%extreme
August Weather28°C (82°F)187 mm (7.4 inches)85%extreme
September Weather28°C (82°F)281 mm (11.1 inches)88%extreme
October Weather27°C (80°F)186 mm (7.3 inches)79%extreme
November Weather26°C (78°F)28 mm (1.1 inches)68%very high
December Weather24°C (75°F)7 mm (0.3 inches)59%very high

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