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September Weather in Pho Sai, Thailand

Last updated: August 27, 2025

In Pho Sai, Thailand, the average temperature in September hovers around 28°C (82°F). Expect a minimum of 23°C (73°F) and a maximum of 35°C (95°F). Rain may accompany your stay, with approximately 340 mm (13.4 in) of precipitation spread over 25 days. Don't forget to prepare for the high humidity, averaging around 91%!

September Temperature in Pho Sai

In September in Pho Sai, the average temperature is 28°C (82°F). Maximums can reach 35°C (95°F) and minimums can be as low as 23°C (73°F). This warm and pleasant weather makes Pho Sai an ideal destination for outdoor activities and relaxation during your travels.

September Weather in Pho Sai: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Pho Sai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pho Sai, 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 (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec767783848484828282807875
Data source: Temperature data for Pho Sai 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 Pho Sai

In Pho Sai in September, the total precipitation amount is 340 mm (13.4 in) over a span of 25 days.

September Precipitation Trends in Pho Sai

The chart displays monthly precipitation patterns in Pho Sai, 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 Pho Sai, September typically receives around 340 mm (13.4 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec493474166198345329340190405
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Pho Sai

In Pho Sai in September humidity is 91%. With an average temperature of 28°C (82°F), this humidity feels like a thick blanket wrapping around you, making each step feel heavy and every breath slightly more laborious, which can be quite challenging for traveling.

September Average Humidity in Pho Sai

This chart illustrates the average monthly humidity levels in Pho Sai, 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 Pho Sai is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%65%53%49%73%86%91%93%91%88%85%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Pho Sai

In Pho Sai 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 Pho Sai, you can check here.

Maximum UV Index Levels in Pho Sai for September

The chart shows the monthly maximum UV Index (UVI) for Pho Sai 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 Pho Sai typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10131414151315141412109
Data source: Pho Sai 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 Pho Sai Compares to Other Months

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

This table compares monthly weather conditions in Pho Sai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)4 mm (0.2 inches)74%very high
February Weather25°C (78°F)9 mm (0.4 inches)65%extreme
March Weather29°C (84°F)33 mm (1.3 inches)53%extreme
April Weather29°C (85°F)74 mm (2.9 inches)49%extreme
May Weather29°C (85°F)166 mm (6.5 inches)72%extreme
June Weather29°C (84°F)197 mm (7.8 inches)86%extreme
July Weather28°C (82°F)345 mm (13.6 inches)91%extreme
August Weather28°C (82°F)329 mm (13.0 inches)93%extreme
September Weather28°C (82°F)340 mm (13.4 inches)91%extreme
October Weather27°C (81°F)190 mm (7.5 inches)88%extreme
November Weather26°C (79°F)40 mm (1.6 inches)85%very high
December Weather24°C (75°F)5 mm (0.2 inches)82%very high

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