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May Weather in San Sebastian, Philippines

Last updated: August 27, 2025

In May, the average temperature in San Sebastian, Philippines reaches a warm 29°C (84°F), with minimums dipping to 26°C (79°F) and maximums peaking at 31°C (88°F). Expect 144 mm (5.7 in) of precipitation over 13 days, accompanied by an average humidity of 77%. Be prepared for a tropical experience!

May Temperature in San Sebastian

In May in San Sebastian, the average temperature is 29°C (84°F). Maximum can reach 31°C (88°F) and minimum can be as low as 26°C (79°F). This makes San Sebastian an ideal destination for travelers looking to enjoy warm and pleasant weather.

May Weather in San Sebastian: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in San Sebastian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Sebastian, May typically has an average temperature of 29°C (84°F), with highs reaching up to 31°C (88°F) and lows dropping to around 26°C (79°F).
JanFebMarAprMayJunJulAugSepOctNovDec797981828483828282838281
Data source: Temperature data for San Sebastian 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 San Sebastian

In San Sebastian in May, the precipitation amount is 144 mm (5.7 in) spread over 13 days.

May Precipitation Trends in San Sebastian

The chart displays monthly precipitation patterns in San Sebastian, 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 San Sebastian, May typically receives around 144 mm (5.7 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec27135111443755616782981705817
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Sebastian

In San Sebastian in May, humidity is 77%. With an average temperature of 29°C (84°F), this humidity feels like a warm blanket enveloping you, making traveling feel heavy and sticky, and often requiring frequent breaks to find relief in shaded areas or air-conditioned spaces.

May Average Humidity in San Sebastian

This chart illustrates the average monthly humidity levels in San Sebastian, 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 San Sebastian is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%73%71%73%77%85%86%87%87%86%89%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Sebastian

In San Sebastian in May, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Sebastian.

Maximum UV Index Levels in San Sebastian for May

The chart shows the monthly maximum UV Index (UVI) for San Sebastian 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 San Sebastian typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414131314141413109
Data source: San Sebastian 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 San Sebastian Compares to Other Months

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

This table compares monthly weather conditions in San Sebastian, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)27 mm (1.1 inches)77%very high
February Weather26°C (79°F)13 mm (0.5 inches)73%extreme
March Weather27°C (81°F)5 mm (0.2 inches)71%extreme
April Weather28°C (83°F)11 mm (0.4 inches)73%extreme
May Weather29°C (84°F)144 mm (5.7 inches)77%extreme
June Weather29°C (84°F)375 mm (14.7 inches)85%extreme
July Weather28°C (83°F)561 mm (22.1 inches)86%extreme
August Weather28°C (82°F)678 mm (26.7 inches)87%extreme
September Weather28°C (82°F)298 mm (11.7 inches)87%extreme
October Weather28°C (83°F)170 mm (6.7 inches)86%extreme
November Weather28°C (83°F)58 mm (2.3 inches)89%very high
December Weather27°C (81°F)17 mm (0.7 inches)85%very high

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