September Weather in Wiang Sa, Thailand

Last updated: August 27, 2025

In September, the average temperature in Wiang Sa, Thailand hovers around 27°C (80°F), making it a warm getaway. Expect a minimum of 22°C (72°F) and a maximum of 35°C (95°F), so pack accordingly! However, be prepared for some rain, as the region experiences an average precipitation of 222 mm (8.8 in) over 24 days. With an average humidity of 87%, it’s advisable to stay hydrated and enjoy the tropical vibe!

September Temperature in Wiang Sa

In September in Wiang Sa, the average temperature is 27°C (80°F). The maximum can reach 35°C (95°F), and the minimum can be as low as 22°C (72°F). This makes it a great time to enjoy outdoor activities and explore the local attractions in a warm and pleasant climate.

September Weather in Wiang Sa: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Wiang Sa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wiang Sa, September typically has an average temperature of 27°C (80°F), with highs reaching up to 35°C (95°F) and lows dropping to around 22°C (72°F).

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

September Precipitation in Wiang Sa

In Wiang Sa in September, the total precipitation amount is 222 mm (8.8 in) over a span of 24 days.

September Precipitation Trends in Wiang Sa

The chart displays monthly precipitation patterns in Wiang Sa, 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 Wiang Sa, September typically receives around 222 mm (8.8 inches) of precipitation spread over approximately 24 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 Wiang Sa

In Wiang Sa in September humidity is 87%. With an average temperature of 27°C (80°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and challenging for traveling.

September Average Humidity in Wiang Sa

This chart illustrates the average monthly humidity levels in Wiang Sa, 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 Wiang Sa 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 Wiang Sa

In Wiang Sa in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Wiang Sa, you can check here.

Maximum UV Index Levels in Wiang Sa for September

The chart shows the monthly maximum UV Index (UVI) for Wiang Sa 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 Wiang Sa typically reaches 14, which falls under the extreme exposure category.

Data source: Wiang Sa 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 Wiang Sa Compares to Other Months

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

This table compares monthly weather conditions in Wiang Sa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (80°F)	133 mm (5.2 inches)	72%	extreme
February Weather	27°C (82°F)	20 mm (0.8 inches)	68%	extreme
March Weather	29°C (84°F)	47 mm (1.9 inches)	68%	extreme
April Weather	29°C (84°F)	201 mm (7.9 inches)	69%	extreme
May Weather	28°C (82°F)	256 mm (10.1 inches)	77%	extreme
June Weather	27°C (82°F)	170 mm (6.7 inches)	86%	extreme
July Weather	27°C (82°F)	154 mm (6.1 inches)	86%	extreme
August Weather	27°C (81°F)	189 mm (7.4 inches)	88%	extreme
September Weather	27°C (80°F)	222 mm (8.8 inches)	87%	extreme
October Weather	27°C (80°F)	329 mm (12.9 inches)	86%	extreme
November Weather	26°C (80°F)	311 mm (12.3 inches)	87%	extreme
December Weather	26°C (79°F)	168 mm (6.6 inches)	83%	extreme