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September Weather in Bang Sai, Thailand

Last updated: August 27, 2025

In September, the average temperature in Bang Sai, Thailand hovers around 29°C (85°F), with a minimum of 25°C (76°F) and a peak of 37°C (99°F). Expect 259 mm (10.2 in) of precipitation over 24 days, contributing to an average humidity level of 88%. Prepare for warm, damp conditions!

September Temperature in Bang Sai

In September in Bang Sai, the average temperature is 29°C (85°F). The maximum can reach 37°C (99°F), while the minimum can be as low as 25°C (76°F). This warm climate makes Bang Sai a great destination for travelers seeking a sunny getaway.

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

The chart illustrates September temperature patterns in Bang Sai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bang Sai, September typically has an average temperature of 29°C (85°F), with highs reaching up to 37°C (99°F) and lows dropping to around 25°C (76°F).
JanFebMarAprMayJunJulAugSepOctNovDec818386888787858584848481
Data source: Temperature data for Bang 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 Bang Sai

In Bang Sai in September, the precipitation amount is 259 mm (10.2 in) spread over a duration of 24 days.

September Precipitation Trends in Bang Sai

The chart displays monthly precipitation patterns in Bang 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 Bang Sai, September typically receives around 259 mm (10.2 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec1810431021611171471672592115118
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bang Sai

In Bang Sai in September, humidity is 88%. With an average temperature of 29°C (85°F), this humidity feels like a heavy blanket enveloping you, making travel uncomfortable and sticky as you navigate through the warm air.

September Average Humidity in Bang Sai

This chart illustrates the average monthly humidity levels in Bang 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 Bang Sai is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec50%47%41%51%76%83%80%86%88%79%68%59%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bang Sai

In Bang Sai 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 Bang Sai.

Maximum UV Index Levels in Bang Sai for September

The chart shows the monthly maximum UV Index (UVI) for Bang 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 Bang Sai typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9121314131313141312109
Data source: Bang 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 Bang Sai Compares to Other Months

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

This table compares monthly weather conditions in Bang Sai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (82°F)18 mm (0.7 inches)50%very high
February Weather28°C (83°F)10 mm (0.4 inches)47%extreme
March Weather30°C (87°F)43 mm (1.7 inches)41%extreme
April Weather31°C (88°F)102 mm (4.0 inches)51%extreme
May Weather31°C (87°F)161 mm (6.3 inches)76%extreme
June Weather30°C (87°F)117 mm (4.6 inches)83%extreme
July Weather30°C (86°F)147 mm (5.8 inches)80%extreme
August Weather29°C (85°F)167 mm (6.6 inches)85%extreme
September Weather29°C (85°F)259 mm (10.2 inches)88%extreme
October Weather29°C (84°F)211 mm (8.3 inches)79%extreme
November Weather29°C (84°F)51 mm (2.0 inches)68%very high
December Weather27°C (81°F)18 mm (0.7 inches)59%very high

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