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September Weather in Phu Thai, Vietnam

Last updated: August 28, 2025

The average temperature in Phu Thai, Vietnam during September is a warm 28°C (83°F). Expect temperatures to range from a comfortable 21°C (71°F) to a sizzling 36°C (97°F). Throughout the month, precipitation is around 250 mm (9.9 in) spread over 23 days, contributing to a high average humidity of 82%. Stay prepared for a tropical experience!

September Temperature in Phu Thai

In September in Phu Thai, the average temperature is 28°C (83°F). Maximums can reach 36°C (97°F), while minimums can drop to as low as 21°C (71°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

September Weather in Phu Thai: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Phu Thai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Phu Thai, September typically has an average temperature of 28°C (83°F), with highs reaching up to 36°C (97°F) and lows dropping to around 21°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec646672768287868483777265
Data source: Temperature data for Phu Thai generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Phu Thai

In Phu Thai in September, the precipitation amount is 250 mm (9.9 in) spread over a duration of 23 days.

September Precipitation Trends in Phu Thai

The chart displays monthly precipitation patterns in Phu Thai, 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 Phu Thai, September typically receives around 250 mm (9.9 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec293454861762012724402502064435
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Phu Thai

In Phu Thai in September, humidity is 82%. With an average temperature of 28°C (83°F), this humidity feels like stepping into a warm, damp embrace, which can make traveling feel heavy and exhausting, as every movement can be met with a sticky veil of moisture that clings to the skin.

September Average Humidity in Phu Thai

This chart illustrates the average monthly humidity levels in Phu Thai, 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 Phu Thai is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec66%71%69%64%73%81%90%89%82%77%72%71%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Phu Thai

In Phu Thai 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 Phu Thai.

Maximum UV Index Levels in Phu Thai for September

The chart shows the monthly maximum UV Index (UVI) for Phu Thai 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 Phu Thai typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810121313121313131197
Data source: Phu Thai 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 Phu Thai Compares to Other Months

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

This table compares monthly weather conditions in Phu Thai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)29 mm (1.1 inches)66%very high
February Weather19°C (66°F)34 mm (1.3 inches)71%very high
March Weather22°C (72°F)54 mm (2.1 inches)69%extreme
April Weather24°C (76°F)85 mm (3.4 inches)64%extreme
May Weather28°C (83°F)176 mm (6.9 inches)73%extreme
June Weather30°C (87°F)201 mm (7.9 inches)81%extreme
July Weather30°C (86°F)272 mm (10.7 inches)90%extreme
August Weather29°C (85°F)440 mm (17.3 inches)89%extreme
September Weather28°C (83°F)250 mm (9.9 inches)82%extreme
October Weather25°C (77°F)206 mm (8.1 inches)77%extreme
November Weather22°C (73°F)44 mm (1.7 inches)72%very high
December Weather18°C (65°F)35 mm (1.4 inches)71%high

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