May Weather in Phonthong, Laos

Last updated: August 23, 2025

In May, the average temperature in Phonthong, Laos hovers around 29°C (84°F). This delightful warmth can be accompanied by minimums of 21°C (70°F) and maximums soaring to 39°C (102°F). Expect an average precipitation of 131 mm (5.2 in) spread across about 18 days, with humidity levels averaging a comfortably tropical 72%. Perfect for those who enjoy a vibrant, warm climate!

May Temperature in Phonthong

In May in Phonthong, the average temperature is 29°C (84°F), with maximums reaching 39°C (102°F) and minimums dropping as low as 21°C (70°F). This range makes it a great time for travelers who enjoy warm weather activities.

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

The chart illustrates May temperature patterns in Phonthong, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Phonthong, May typically has an average temperature of 29°C (84°F), with highs reaching up to 39°C (102°F) and lows dropping to around 21°C (70°F).

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

May Precipitation in Phonthong

In Phonthong in May, the precipitation amount is 131 mm (5.2 in) over the course of 18 days.

May Precipitation Trends in Phonthong

The chart displays monthly precipitation patterns in Phonthong, 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 Phonthong, May typically receives around 131 mm (5.2 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 Phonthong

In Phonthong in May humidity is 72%. With an average temperature of 29°C (84°F), this humidity feels like walking through a warm, damp sponge, making travel uncomfortable as the heat clings to your skin and drains your energy.

May Average Humidity in Phonthong

This chart illustrates the average monthly humidity levels in Phonthong, 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 Phonthong is approximately 72%, 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 Phonthong

In Phonthong 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 Phonthong, you can check here.

Maximum UV Index Levels in Phonthong for May

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

Data source: Phonthong 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 Phonthong Compares to Other Months

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

This table compares monthly weather conditions in Phonthong, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (78°F)	2 mm (0.1 inches)	74%	very high
February Weather	26°C (79°F)	3 mm (0.1 inches)	65%	extreme
March Weather	29°C (84°F)	21 mm (0.8 inches)	53%	extreme
April Weather	29°C (85°F)	50 mm (2.0 inches)	49%	extreme
May Weather	29°C (84°F)	131 mm (5.2 inches)	72%	extreme
June Weather	28°C (82°F)	282 mm (11.1 inches)	86%	extreme
July Weather	27°C (81°F)	467 mm (18.4 inches)	91%	extreme
August Weather	27°C (81°F)	427 mm (16.8 inches)	93%	extreme
September Weather	27°C (81°F)	347 mm (13.7 inches)	91%	extreme
October Weather	27°C (80°F)	208 mm (8.2 inches)	88%	extreme
November Weather	26°C (79°F)	37 mm (1.5 inches)	85%	very high
December Weather	25°C (77°F)	7 mm (0.3 inches)	82%	very high