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September Weather in Kosum Phisai, Thailand

Last updated: August 27, 2025

In Kosum Phisai, Thailand, the average temperature in September is a warm 28°C (83°F), with a minimum dipping to 23°C (74°F) and peaking at a notable 35°C (96°F). Expect frequent rain, as precipitation averages 281 mm (11.1 in) over 23 days. Be prepared for a humid atmosphere, with average humidity reaching an impressive 86%.

September Temperature in Kosum Phisai

In September in Kosum Phisai, the average temperature is 28°C (83°F). Maximum temperatures can reach 35°C (96°F), while the minimum can dip down to 23°C (74°F). This pleasant climate makes it an ideal time for outdoor activities and exploration.

September Weather in Kosum Phisai: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Kosum Phisai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kosum Phisai, September typically has an average temperature of 28°C (83°F), with highs reaching up to 35°C (96°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec767884858585848483817975
Data source: Temperature data for Kosum Phisai 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 Kosum Phisai

In Kosum Phisai in September, the precipitation amount is 281 mm (11.1 in) spread over 23 days.

September Precipitation Trends in Kosum Phisai

The chart displays monthly precipitation patterns in Kosum Phisai, 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 Kosum Phisai, September typically receives around 281 mm (11.1 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec6114174181139242199281173316
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kosum Phisai

In Kosum Phisai in September humidity is 86%. With an average temperature of 28°C (83°F), this humidity feels like a heavy blanket enveloping you, making every step feel sluggish and every breath a reminder of the tropical heat, which can be quite challenging for traveling.

September Average Humidity in Kosum Phisai

This chart illustrates the average monthly humidity levels in Kosum Phisai, 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 Kosum Phisai is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%54%45%40%65%82%90%92%86%80%72%67%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kosum Phisai

In Kosum Phisai 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 Kosum Phisai.

Maximum UV Index Levels in Kosum Phisai for September

The chart shows the monthly maximum UV Index (UVI) for Kosum Phisai 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 Kosum Phisai typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9121414141315141312109
Data source: Kosum Phisai 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 Kosum Phisai Compares to Other Months

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

This table compares monthly weather conditions in Kosum Phisai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)6 mm (0.2 inches)59%very high
February Weather26°C (78°F)10 mm (0.4 inches)54%extreme
March Weather29°C (84°F)41 mm (1.6 inches)45%extreme
April Weather30°C (85°F)74 mm (2.9 inches)40%extreme
May Weather30°C (86°F)181 mm (7.1 inches)65%extreme
June Weather30°C (86°F)139 mm (5.5 inches)82%extreme
July Weather29°C (85°F)242 mm (9.5 inches)90%extreme
August Weather29°C (84°F)199 mm (7.8 inches)92%extreme
September Weather28°C (83°F)281 mm (11.1 inches)86%extreme
October Weather27°C (81°F)173 mm (6.8 inches)80%extreme
November Weather26°C (79°F)31 mm (1.2 inches)72%very high
December Weather24°C (75°F)5 mm (0.2 inches)66%very high

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