September Weather in Phayao, Thailand

Last updated: August 27, 2025

In September, the average temperature in Phayao, Thailand is a warm 28°C (82°F), with a minimum of 22°C (72°F) and a maximum reaching 35°C (96°F). Expect 177 mm (7.0 in) of precipitation over 21 days, coupled with an average humidity level of 83%. Perfect for those who enjoy a mix of warmth and occasional rain!

September Temperature in Phayao

In September in Phayao, the average temperature is 28°C (82°F). Maximum temperatures can reach 35°C (96°F), while minimums can drop to as low as 22°C (72°F). This pleasant weather makes Phayao an ideal destination for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Phayao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Phayao, September typically has an average temperature of 28°C (82°F), with highs reaching up to 35°C (96°F) and lows dropping to around 22°C (72°F).

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

September Precipitation in Phayao

In Phayao in September, the total precipitation amount is 177 mm (7.0 in) spread over 21 days.

September Precipitation Trends in Phayao

The chart displays monthly precipitation patterns in Phayao, 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 Phayao, September typically receives around 177 mm (7.0 inches) of precipitation spread over approximately 21 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 Phayao

In Phayao in September humidity is 83%. With an average temperature of 28°C (82°F), this humidity feels like stepping into a warm, thick blanket, making travel languid and drenched in sweat.

September Average Humidity in Phayao

This chart illustrates the average monthly humidity levels in Phayao, 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 Phayao is approximately 83%, 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 Phayao

In Phayao 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 Phayao, you can check here.

Maximum UV Index Levels in Phayao for September

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

Data source: Phayao 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 Phayao Compares to Other Months

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

This table compares monthly weather conditions in Phayao, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (72°F)	23 mm (0.9 inches)	51%	very high
February Weather	24°C (75°F)	9 mm (0.4 inches)	46%	very high
March Weather	28°C (82°F)	4 mm (0.2 inches)	38%	extreme
April Weather	29°C (84°F)	109 mm (4.3 inches)	36%	extreme
May Weather	29°C (85°F)	124 mm (4.9 inches)	63%	extreme
June Weather	29°C (84°F)	161 mm (6.3 inches)	81%	extreme
July Weather	28°C (83°F)	228 mm (9.0 inches)	83%	extreme
August Weather	28°C (82°F)	263 mm (10.4 inches)	91%	extreme
September Weather	28°C (82°F)	177 mm (7.0 inches)	83%	extreme
October Weather	27°C (80°F)	132 mm (5.2 inches)	67%	extreme
November Weather	25°C (77°F)	21 mm (0.8 inches)	60%	very high
December Weather	22°C (72°F)	18 mm (0.7 inches)	56%	very high