September Weather in Chachoengsao, Thailand

Last updated: August 27, 2025

In September, the average temperature in Chachoengsao, Thailand hovers around 28°C (83°F), with minimums dipping to 24°C (76°F) and maximums peaking at 35°C (95°F). Expect generous rainfall throughout the month, with an average precipitation of 299 mm (11.8 in) spread over 27 days. The atmosphere is quite humid, with an average humidity level of 87%, making it feel even warmer.

September Temperature in Chachoengsao

In September in Chachoengsao, the average temperature is 28°C (83°F). Maximums can reach 35°C (95°F), and minimums can be as low as 24°C (76°F). This makes it an ideal time for travelers seeking warm weather and plenty of sunshine.

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

The chart illustrates September temperature patterns in Chachoengsao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chachoengsao, 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 (76°F).

Data source: Temperature data for Chachoengsao generated using information from the Copernicus Climate Change Service.

September Precipitation in Chachoengsao

In Chachoengsao in September, the precipitation amount is 299 mm (11.8 in), which falls over the course of 27 days.

September Precipitation Trends in Chachoengsao

The chart displays monthly precipitation patterns in Chachoengsao, 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 Chachoengsao, September typically receives around 299 mm (11.8 inches) of precipitation spread over approximately 27 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Chachoengsao

In Chachoengsao 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 Chachoengsao

This chart illustrates the average monthly humidity levels in Chachoengsao, 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 Chachoengsao is approximately 87%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chachoengsao

In Chachoengsao 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 Chachoengsao.

Maximum UV Index Levels in Chachoengsao for September

The chart shows the monthly maximum UV Index (UVI) for Chachoengsao 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 Chachoengsao typically reaches 13, which falls under the extreme exposure category.

Data source: Chachoengsao 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 Chachoengsao Compares to Other Months

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

This table compares monthly weather conditions in Chachoengsao, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	26 mm (1.0 inches)	59%	very high
February Weather	28°C (82°F)	23 mm (0.9 inches)	58%	extreme
March Weather	29°C (85°F)	57 mm (2.3 inches)	61%	extreme
April Weather	30°C (86°F)	129 mm (5.1 inches)	70%	extreme
May Weather	30°C (86°F)	200 mm (7.9 inches)	80%	extreme
June Weather	30°C (86°F)	152 mm (6.0 inches)	85%	extreme
July Weather	29°C (84°F)	232 mm (9.1 inches)	86%	extreme
August Weather	29°C (84°F)	211 mm (8.3 inches)	88%	extreme
September Weather	28°C (83°F)	299 mm (11.8 inches)	87%	extreme
October Weather	28°C (83°F)	223 mm (8.8 inches)	83%	extreme
November Weather	28°C (83°F)	43 mm (1.7 inches)	78%	very high
December Weather	27°C (80°F)	22 mm (0.9 inches)	70%	very high