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September Weather in Roi Et, Thailand

Last updated: August 27, 2025

In September, the average temperature in Roi Et, Thailand reaches a warm 28°C (83°F). Expect lows of around 24°C (75°F) and highs peaking at 35°C (95°F). Be prepared for significant rainfall, with an average precipitation of 294 mm (11.6 in) spread over 24 days. The weather can feel quite humid, with an average humidity level of 89%.

September Temperature in Roi Et

In September in Roi Et, the average temperature is 28°C (83°F). The maximum can reach 35°C (95°F), and the minimum can be as low as 24°C (75°F). This warm and pleasant climate makes it an ideal time for exploring and enjoying outdoor activities in Roi Et.

September Weather in Roi Et: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Roi Et, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Roi Et, September typically has an average temperature of 28°C (83°F), with highs reaching up to 35°C (95°F) and lows dropping to around 24°C (75°F).
JanFebMarAprMayJunJulAugSepOctNovDec767884858585848383817975
Data source: Temperature data for Roi Et 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 Roi Et

In Roi Et in September, the precipitation amount is 294 mm (11.6 in) occurring over the span of 24 days.

September Precipitation Trends in Roi Et

The chart displays monthly precipitation patterns in Roi Et, 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 Roi Et, September typically receives around 294 mm (11.6 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec483460152147275217295167286
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Roi Et

In Roi Et in September, humidity is 89%. With an average temperature of 28°C (83°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities feel sticky and strenuous, and requiring constant hydration to stay comfortable while exploring.

September Average Humidity in Roi Et

This chart illustrates the average monthly humidity levels in Roi Et, 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 Roi Et is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec56%50%41%44%71%84%87%90%89%83%74%68%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Roi Et

In Roi Et 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 Roi Et.

Maximum UV Index Levels in Roi Et for September

The chart shows the monthly maximum UV Index (UVI) for Roi Et 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 Roi Et typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414151315141312109
Data source: Roi Et 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 Roi Et Compares to Other Months

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

This table compares monthly weather conditions in Roi Et, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (76°F)4 mm (0.1 inches)56%very high
February Weather26°C (78°F)8 mm (0.3 inches)50%extreme
March Weather29°C (84°F)34 mm (1.3 inches)41%extreme
April Weather30°C (86°F)60 mm (2.4 inches)44%extreme
May Weather30°C (86°F)152 mm (6.0 inches)71%extreme
June Weather30°C (86°F)147 mm (5.8 inches)83%extreme
July Weather29°C (84°F)275 mm (10.8 inches)87%extreme
August Weather28°C (84°F)217 mm (8.5 inches)90%extreme
September Weather28°C (83°F)294 mm (11.6 inches)89%extreme
October Weather27°C (81°F)167 mm (6.6 inches)83%extreme
November Weather26°C (79°F)28 mm (1.1 inches)74%very high
December Weather24°C (76°F)6 mm (0.2 inches)68%very high

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