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September Weather in Nam Khun, Thailand

Last updated: August 27, 2025

In September, the average temperature in Nam Khun, Thailand hovers around 27°C (81°F), with minimums dipping to 23°C (73°F) and maximums soaring to 33°C (92°F). Expect considerable precipitation, totaling 301 mm (11.8 in) over 27 days, accompanied by a high average humidity of 89%. Stay prepared for a warm and wet climate!

September Temperature in Nam Khun

In September in Nam Khun, the average temperature is 27°C (81°F). Maximums can reach 33°C (92°F) and minimums can be as low as 23°C (73°F). This makes it an ideal time for travelers looking to enjoy warm weather and outdoor activities.

September Weather in Nam Khun: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Nam Khun, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nam Khun, September typically has an average temperature of 27°C (81°F), with highs reaching up to 33°C (92°F) and lows dropping to around 23°C (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec777882838382818181807876
Data source: Temperature data for Nam Khun 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 Nam Khun

In Nam Khun in September, the precipitation amount is 301 mm (11.8 in) spread over the course of 27 days.

September Precipitation Trends in Nam Khun

The chart displays monthly precipitation patterns in Nam Khun, 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 Nam Khun, September typically receives around 301 mm (11.8 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec4538811581762372533012047219
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Nam Khun

In Nam Khun in September humidity is 89%. With an average temperature of 27°C (81°F), this humidity feels like a wet blanket enveloping you, making outdoor activities challenging and travel a little less comfortable.

September Average Humidity in Nam Khun

This chart illustrates the average monthly humidity levels in Nam Khun, 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 Nam Khun is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec56%50%41%44%71%84%87%90%89%83%74%68%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Nam Khun

In Nam Khun 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 Nam Khun, you can check here.

Maximum UV Index Levels in Nam Khun for September

The chart shows the monthly maximum UV Index (UVI) for Nam Khun 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 Nam Khun typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec101314141513141414121110
Data source: Nam Khun 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 Nam Khun Compares to Other Months

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

This table compares monthly weather conditions in Nam Khun, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)4 mm (0.2 inches)56%very high
February Weather26°C (79°F)5 mm (0.2 inches)50%extreme
March Weather28°C (83°F)38 mm (1.5 inches)41%extreme
April Weather29°C (84°F)81 mm (3.2 inches)44%extreme
May Weather28°C (83°F)158 mm (6.2 inches)71%extreme
June Weather28°C (83°F)176 mm (6.9 inches)83%extreme
July Weather27°C (81°F)237 mm (9.3 inches)87%extreme
August Weather27°C (81°F)253 mm (10.0 inches)90%extreme
September Weather27°C (81°F)301 mm (11.8 inches)89%extreme
October Weather26°C (80°F)204 mm (8.0 inches)83%extreme
November Weather26°C (79°F)72 mm (2.8 inches)74%extreme
December Weather24°C (76°F)19 mm (0.8 inches)68%very high

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