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September Weather in Ratchasan, Thailand

Last updated: August 27, 2025

In September, the average temperature in Ratchasan, Thailand hovers around 28°C (83°F). Expect a pleasant range, with minimums dipping to 24°C (76°F) and maximums reaching up to a sizzling 35°C (96°F). However, prepare for the possibility of rain, as the area receives an average precipitation of 296 mm (11.6 in) spread over 26 days. With an average humidity of 87%, it's a month where light, breathable clothing is a must!

September Temperature in Ratchasan

In September in Ratchasan, the average temperature is 28°C (83°F), with maximums reaching 35°C (96°F) and minimums dropping as low as 24°C (76°F). This warm and pleasant climate makes Ratchasan an ideal destination for travelers looking to enjoy outdoor activities and explore the local attractions.

September Weather in Ratchasan: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ratchasan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ratchasan, 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 24°C (76°F).
JanFebMarAprMayJunJulAugSepOctNovDec818285868585848483838281
Data source: Temperature data for Ratchasan 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 Ratchasan

In Ratchasan in September, the total precipitation amount is 296 mm (11.6 in), which occurs over a span of 26 days.

September Precipitation Trends in Ratchasan

The chart displays monthly precipitation patterns in Ratchasan, 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 Ratchasan, September typically receives around 296 mm (11.6 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec1720561111971722202222962253819
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ratchasan

In Ratchasan in September humidity is 87%. With an average temperature of 28°C (83°F), this humidity feels like you're enveloped in a warm, sticky blanket, making outdoor activities slightly uncomfortable and travel plans require frequent breaks for hydration and respite from the heat.

September Average Humidity in Ratchasan

This chart illustrates the average monthly humidity levels in Ratchasan, 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 Ratchasan is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%58%61%70%80%85%86%88%87%83%78%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ratchasan

In Ratchasan 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 Ratchasan.

Maximum UV Index Levels in Ratchasan for September

The chart shows the monthly maximum UV Index (UVI) for Ratchasan 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 Ratchasan typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141314141313119
Data source: Ratchasan 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 Ratchasan Compares to Other Months

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

This table compares monthly weather conditions in Ratchasan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)17 mm (0.7 inches)59%very high
February Weather28°C (82°F)20 mm (0.8 inches)58%extreme
March Weather29°C (85°F)56 mm (2.2 inches)61%extreme
April Weather30°C (86°F)111 mm (4.4 inches)70%extreme
May Weather30°C (86°F)197 mm (7.8 inches)80%extreme
June Weather29°C (85°F)172 mm (6.8 inches)85%extreme
July Weather29°C (84°F)220 mm (8.7 inches)86%extreme
August Weather29°C (84°F)222 mm (8.7 inches)88%extreme
September Weather28°C (83°F)296 mm (11.6 inches)87%extreme
October Weather28°C (83°F)225 mm (8.9 inches)83%extreme
November Weather28°C (83°F)38 mm (1.5 inches)78%extreme
December Weather27°C (81°F)19 mm (0.8 inches)70%very high

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