September Weather in Phan, Thailand

Last updated: August 27, 2025

In September, the average temperature in Phan, Thailand reaches a warm 27°C (82°F), with a comfortable minimum of 21°C (70°F) and peaks at a scorching 36°C (97°F). Expect precipitation totaling 177 mm (7.0 in) spread across about 23 days, contributing to an average humidity of 83%. Be prepared for a mix of warmth and moisture as you explore this vibrant location!

September Temperature in Phan

In September in Phan, the average temperature is 27°C (82°F). Maximums can reach 36°C (97°F), and minimums can be as low as 21°C (70°F). This makes it an ideal time to explore outdoor activities while enjoying warm, sunny weather.

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

The chart illustrates September temperature patterns in Phan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Phan, September typically has an average temperature of 27°C (82°F), with highs reaching up to 36°C (97°F) and lows dropping to around 21°C (70°F).

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

September Precipitation in Phan

In Phan in September, the total precipitation amount is 177 mm (7.0 in), spread over a period of 23 days.

September Precipitation Trends in Phan

The chart displays monthly precipitation patterns in Phan, 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 Phan, September typically receives around 177 mm (7.0 inches) of precipitation spread over approximately 23 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 Phan

In Phan in September humidity is 83%. With an average temperature of 27°C (82°F), this humidity feels like a thick, warm blanket enveloping you, making outdoor activities exhausting and encouraging visitors to seek the comfort of shade or air conditioning while exploring the area.

September Average Humidity in Phan

This chart illustrates the average monthly humidity levels in Phan, 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 Phan 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 Phan

In Phan 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 Phan, you can check here.

Maximum UV Index Levels in Phan for September

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

Data source: Phan 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 Phan Compares to Other Months

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

This table compares monthly weather conditions in Phan, 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 (71°F)	31 mm (1.2 inches)	51%	very high
February Weather	23°C (74°F)	10 mm (0.4 inches)	46%	very high
March Weather	27°C (81°F)	7 mm (0.3 inches)	38%	extreme
April Weather	28°C (83°F)	129 mm (5.1 inches)	36%	extreme
May Weather	29°C (84°F)	150 mm (5.9 inches)	63%	extreme
June Weather	29°C (84°F)	180 mm (7.1 inches)	81%	extreme
July Weather	28°C (83°F)	239 mm (9.4 inches)	83%	extreme
August Weather	27°C (82°F)	277 mm (10.9 inches)	91%	extreme
September Weather	27°C (82°F)	177 mm (7.0 inches)	83%	extreme
October Weather	26°C (80°F)	116 mm (4.6 inches)	67%	extreme
November Weather	25°C (77°F)	29 mm (1.1 inches)	60%	very high
December Weather	21°C (70°F)	23 mm (0.9 inches)	56%	very high