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September Weather in Nakhon Chai Si, Thailand

Last updated: August 27, 2025

In September, the average temperature in Nakhon Chai Si, Thailand is a warm 29°C (84°F), with minimums dropping to 25°C (76°F) and maximums soaring to 35°C (96°F). Expect high humidity at 87%, which adds to the tropical feel. However, be prepared for considerable precipitation, averaging 243 mm (9.6 in) over 24 days, so bringing an umbrella is a wise choice!

September Temperature in Nakhon Chai Si

In September in Nakhon Chai Si, the average temperature is 29°C (84°F), with maximums reaching 35°C (96°F) and minimums dropping to as low as 25°C (76°F). This pleasant warm climate makes Nakhon Chai Si an ideal destination for outdoor activities and relaxation during this time of year.

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

The chart illustrates September temperature patterns in Nakhon Chai Si, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nakhon Chai Si, September typically has an average temperature of 29°C (84°F), with highs reaching up to 35°C (96°F) and lows dropping to around 25°C (76°F).
JanFebMarAprMayJunJulAugSepOctNovDec808285868686858484838280
Data source: Temperature data for Nakhon Chai Si 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 Nakhon Chai Si

In Nakhon Chai Si in September, the total precipitation amount is 243 mm (9.6 in) spread over 24 days.

September Precipitation Trends in Nakhon Chai Si

The chart displays monthly precipitation patterns in Nakhon Chai Si, 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 Nakhon Chai Si, September typically receives around 243 mm (9.6 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec2413431151611271621752432687323
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Nakhon Chai Si

In Nakhon Chai Si in September, humidity is 87%. With an average temperature of 29°C (84°F), this humidity feels like a warm blanket enveloping you, making traveling a challenge as you navigate the heavy, moist air that clings to your skin.

September Average Humidity in Nakhon Chai Si

This chart illustrates the average monthly humidity levels in Nakhon Chai Si, 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 Nakhon Chai Si is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%58%61%70%80%85%86%88%87%83%78%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Nakhon Chai Si

In Nakhon Chai Si in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Nakhon Chai Si.

Maximum UV Index Levels in Nakhon Chai Si for September

The chart shows the monthly maximum UV Index (UVI) for Nakhon Chai Si 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 Nakhon Chai Si typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1012141314131414131298
Data source: Nakhon Chai Si 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 Nakhon Chai Si Compares to Other Months

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

This table compares monthly weather conditions in Nakhon Chai Si, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)24 mm (0.9 inches)59%very high
February Weather28°C (82°F)13 mm (0.5 inches)58%extreme
March Weather30°C (86°F)43 mm (1.7 inches)61%extreme
April Weather30°C (86°F)115 mm (4.5 inches)70%extreme
May Weather30°C (87°F)161 mm (6.4 inches)80%extreme
June Weather30°C (86°F)127 mm (5.0 inches)85%extreme
July Weather29°C (85°F)161 mm (6.4 inches)86%extreme
August Weather29°C (85°F)175 mm (6.9 inches)88%extreme
September Weather29°C (84°F)243 mm (9.6 inches)87%extreme
October Weather28°C (83°F)268 mm (10.5 inches)83%extreme
November Weather28°C (82°F)73 mm (2.9 inches)78%very high
December Weather26°C (80°F)23 mm (0.9 inches)70%very high

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