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May Weather in Ratchasan, Thailand

Last updated: August 27, 2025

In May, the average temperature in Ratchasan, Thailand hovers around 30°C (86°F), with minimums dipping to 22°C (72°F) and maximums soaring to 39°C (102°F). Expect 197 mm (7.8 in) of precipitation spread over about 23 days, contributing to the average humidity of 80% that adds a tropical feel to the air.

May Temperature in Ratchasan

In May in Ratchasan, the average temperature is 30°C (86°F). Maximums can reach 39°C (102°F), while minimums can be as low as 22°C (72°F). Travelers should prepare for warm weather and stay hydrated during their visit.

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

The chart illustrates May temperature patterns in Ratchasan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ratchasan, May typically has an average temperature of 30°C (86°F), with highs reaching up to 39°C (102°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec818285868585848483838281
Data source: Temperature data for Ratchasan generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Ratchasan

In Ratchasan in May, the total precipitation amount is 197 mm (7.8 in) spread across 23 days.

May Precipitation Trends in Ratchasan

The chart displays monthly precipitation patterns in Ratchasan, 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 Ratchasan, May typically receives around 197 mm (7.8 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec1720561111971722202222962253819
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Ratchasan

In Ratchasan in May, humidity is 80%. With an average temperature of 30°C (86°F), this humidity feels like a heavy, sticky blanket wrapping around you, making travel feel laborious and draining as you navigate through the thick air.

May Average Humidity in Ratchasan

This chart illustrates the average monthly humidity levels in Ratchasan, 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 Ratchasan is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%58%61%70%80%85%86%88%87%83%78%70%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Ratchasan

In Ratchasan 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 Ratchasan, you can check here.

Maximum UV Index Levels in Ratchasan for May

The chart shows the monthly maximum UV Index (UVI) for Ratchasan 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 Ratchasan typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141314141313119
Data source: Ratchasan 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 Ratchasan Compares to Other Months

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

This table compares monthly weather conditions in Ratchasan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)17 mm (0.7 inches)59%very high
February Weather28°C (82°F)20 mm (0.8 inches)58%extreme
March Weather29°C (85°F)56 mm (2.2 inches)61%extreme
April Weather30°C (86°F)111 mm (4.4 inches)70%extreme
May Weather30°C (86°F)197 mm (7.8 inches)80%extreme
June Weather29°C (85°F)172 mm (6.8 inches)85%extreme
July Weather29°C (84°F)220 mm (8.7 inches)86%extreme
August Weather29°C (84°F)222 mm (8.7 inches)88%extreme
September Weather28°C (83°F)296 mm (11.6 inches)87%extreme
October Weather28°C (83°F)225 mm (8.9 inches)83%extreme
November Weather28°C (83°F)38 mm (1.5 inches)78%extreme
December Weather27°C (81°F)19 mm (0.8 inches)70%very high

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