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September Weather in Wiang Sa, Thailand

Last updated: August 27, 2025

In September, the average temperature in Wiang Sa, Thailand hovers around 27°C (81°F), with lows of 22°C (71°F) and highs reaching up to 35°C (95°F). Be prepared for a humid experience, as the average humidity sits at a steamy 85%. Expect 188 mm (7.4 in) of precipitation spread across 23 days, so don’t forget your umbrella!

September Temperature in Wiang Sa

In September in Wiang Sa, the average temperature is 27°C (81°F). The maximum can reach 35°C (95°F), while the minimum can be as low as 22°C (71°F). This climate makes Wiang Sa an ideal destination for travelers seeking warm and pleasant weather.

September Weather in Wiang Sa: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Wiang Sa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wiang Sa, September typically has an average temperature of 27°C (81°F), with highs reaching up to 35°C (95°F) and lows dropping to around 22°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec737582838383818181807872
Data source: Temperature data for Wiang Sa 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 Wiang Sa

In Wiang Sa in September, the precipitation amount is 188 mm (7.4 in) distributed over a span of 23 days.

September Precipitation Trends in Wiang Sa

The chart displays monthly precipitation patterns in Wiang Sa, 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 Wiang Sa, September typically receives around 188 mm (7.4 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec261514104148209251320188951415
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Wiang Sa

In Wiang Sa in September humidity is 85%. With an average temperature of 27°C (81°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier as sweat clings to your skin and the air feels almost tangible, which can be quite challenging for traveling.

September Average Humidity in Wiang Sa

This chart illustrates the average monthly humidity levels in Wiang Sa, 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 Wiang Sa is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec57%53%45%39%66%79%90%92%85%72%64%60%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Wiang Sa

In Wiang Sa 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 Wiang Sa, you can check here.

Maximum UV Index Levels in Wiang Sa for September

The chart shows the monthly maximum UV Index (UVI) for Wiang Sa 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 Wiang Sa typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9111313141415141413108
Data source: Wiang Sa 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 Wiang Sa Compares to Other Months

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

This table compares monthly weather conditions in Wiang Sa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (73°F)26 mm (1.0 inches)57%very high
February Weather24°C (76°F)15 mm (0.6 inches)53%extreme
March Weather28°C (82°F)14 mm (0.5 inches)45%extreme
April Weather28°C (83°F)104 mm (4.1 inches)39%extreme
May Weather29°C (84°F)148 mm (5.8 inches)66%extreme
June Weather28°C (83°F)209 mm (8.2 inches)79%extreme
July Weather27°C (82°F)251 mm (9.9 inches)90%extreme
August Weather27°C (81°F)320 mm (12.6 inches)92%extreme
September Weather27°C (81°F)188 mm (7.4 inches)85%extreme
October Weather27°C (80°F)95 mm (3.7 inches)72%extreme
November Weather26°C (78°F)14 mm (0.6 inches)64%very high
December Weather22°C (73°F)15 mm (0.6 inches)60%very high

Compare Wiang Sa's Climate with Cities Worldwide