May Weather in Nan, Thailand

Last updated: August 27, 2025

In May, the average temperature in Nan, Thailand is a warm 29°C (85°F). Expect a minimum of 21°C (71°F) and a possible maximum of 40°C (105°F), making it ideal for those who enjoy the heat. However, be prepared for 123 mm (4.9 in) of precipitation spread over 18 days, contributing to an average humidity of 66%.

May Temperature in Nan

In May in Nan, the average temperature is 29°C (85°F). Maximum temperatures can reach 40°C (105°F), while minimums can drop to 21°C (71°F). Overall, it's advisable to prepare for warm weather when traveling to Nan during this time.

May Weather in Nan: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Nan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nan, May typically has an average temperature of 29°C (85°F), with highs reaching up to 40°C (105°F) and lows dropping to around 21°C (71°F).

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

May Precipitation in Nan

In Nan in May, the precipitation amount is 123 mm (4.9 in) spread over 18 days.

May Precipitation Trends in Nan

The chart displays monthly precipitation patterns in Nan, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Nan, May typically receives around 123 mm (4.9 inches) of precipitation spread over approximately 18 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Nan

In Nan in May, humidity is 66%. With an average temperature of 29°C (85°F), this humidity feels like a warm, heavy blanket wrapping around you, making traveling feel more intense as you navigate through the air, often causing you to sweat and seek shade more frequently.

May Average Humidity in Nan

This chart illustrates the average monthly humidity levels in Nan, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Nan is approximately 66%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Nan

In Nan in May, 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 Nan, you can check here.

Maximum UV Index Levels in Nan for May

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

Data source: Nan May 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 May Weather in Nan Compares to Other Months

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

This table compares monthly weather conditions in Nan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (74°F)	25 mm (1.0 inches)	57%	very high
February Weather	24°C (76°F)	11 mm (0.4 inches)	53%	extreme
March Weather	28°C (82°F)	10 mm (0.4 inches)	45%	extreme
April Weather	29°C (84°F)	90 mm (3.5 inches)	39%	extreme
May Weather	29°C (85°F)	123 mm (4.9 inches)	66%	extreme
June Weather	28°C (83°F)	201 mm (7.9 inches)	79%	extreme
July Weather	28°C (82°F)	265 mm (10.4 inches)	90%	extreme
August Weather	27°C (81°F)	312 mm (12.3 inches)	92%	extreme
September Weather	27°C (82°F)	185 mm (7.3 inches)	85%	extreme
October Weather	27°C (81°F)	91 mm (3.6 inches)	72%	extreme
November Weather	26°C (79°F)	14 mm (0.5 inches)	64%	very high
December Weather	23°C (73°F)	15 mm (0.6 inches)	60%	very high