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May Weather in San Mateo, Philippines

Last updated: August 27, 2025

In San Mateo, Philippines, the average temperature for May reaches a warm 28°C (83°F), with minimums dipping to 21°C (70°F) and maximums soaring to 36°C (98°F). Expect significant precipitation during the month, totaling 287 mm (11.3 in) over approximately 17 days. The atmosphere remains notably humid, with an average humidity of 77%.

May Temperature in San Mateo

In May in San Mateo, the average temperature is 28°C (83°F). Maximums can reach 36°C (98°F), while minimums can drop to as low as 21°C (70°F). This makes it an ideal time for travelers seeking warm weather and sunny days.

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

The chart illustrates May temperature patterns in San Mateo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Mateo, May typically has an average temperature of 28°C (83°F), with highs reaching up to 36°C (98°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec737377798283828181797875
Data source: Temperature data for San Mateo 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 Mateo

In San Mateo in May, the precipitation amount is 287 mm (11.3 in) spread over 17 days.

May Precipitation Trends in San Mateo

The chart displays monthly precipitation patterns in San Mateo, 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 Mateo, May typically receives around 287 mm (11.3 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec17613010572287198364352265220269272
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Mateo

In San Mateo in May, humidity is 77%. With an average temperature of 28°C (83°F), this humidity feels like walking through a warm, damp blanket, making outdoor activities more challenging and requiring frequent hydration breaks for travelers.

May Average Humidity in San Mateo

This chart illustrates the average monthly humidity levels in San Mateo, 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 Mateo 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 Mateo

In San Mateo 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 San Mateo, you can check here.

Maximum UV Index Levels in San Mateo for May

The chart shows the monthly maximum UV Index (UVI) for San Mateo 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 Mateo typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11131415141414141413109
Data source: San Mateo 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 Mateo Compares to Other Months

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

This table compares monthly weather conditions in San Mateo, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)176 mm (6.9 inches)77%extreme
February Weather23°C (74°F)130 mm (5.1 inches)73%extreme
March Weather25°C (77°F)105 mm (4.1 inches)71%extreme
April Weather26°C (80°F)72 mm (2.8 inches)73%extreme
May Weather28°C (83°F)287 mm (11.3 inches)77%extreme
June Weather29°C (84°F)198 mm (7.8 inches)85%extreme
July Weather28°C (82°F)364 mm (14.3 inches)86%extreme
August Weather27°C (82°F)352 mm (13.9 inches)87%extreme
September Weather27°C (81°F)265 mm (10.4 inches)87%extreme
October Weather26°C (79°F)220 mm (8.7 inches)86%extreme
November Weather25°C (78°F)269 mm (10.6 inches)89%very high
December Weather24°C (75°F)272 mm (10.7 inches)85%very high

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