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December Weather in San Mateo, Philippines

Last updated: August 27, 2025

In December, the average temperature in San Mateo, Philippines is a pleasant 24°C (75°F). Expect a minimum of 18°C (65°F) and a peak around 31°C (88°F). Be prepared for 272 mm (10.7 in) of precipitation over 23 days, contributing to an average humidity level of 85%. Enjoy the warm, albeit humid, atmosphere!

December Temperature in San Mateo

In December in San Mateo, the average temperature is 24°C (75°F). Maximum temperatures can reach 31°C (88°F) while minimums can drop to as low as 18°C (65°F). This pleasant climate makes it an ideal time for sightseeing and outdoor activities.

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

The chart illustrates December 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, December typically has an average temperature of 24°C (75°F), with highs reaching up to 31°C (88°F) and lows dropping to around 18°C (65°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.

December Precipitation in San Mateo

In San Mateo in December, the precipitation amount is 272 mm (10.7 in) spread over 23 days.

December Precipitation Trends in San Mateo

The chart displays monthly precipitation patterns in San Mateo, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In San Mateo, December typically receives around 272 mm (10.7 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec17613010572287198364352265220269272
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Mateo

In San Mateo in December humidity is 85%. With an average temperature of 24°C (75°F), this humidity feels like walking through a warm, heavy blanket, making travel feel sluggish and draining as you navigate through the thick, muggy air.

December Average Humidity in San Mateo

This chart illustrates the average monthly humidity levels in San Mateo, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in San Mateo is approximately 85%, 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in San Mateo

In San Mateo in December, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in San Mateo.

Maximum UV Index Levels in San Mateo for December

The chart shows the monthly maximum UV Index (UVI) for San Mateo in December, 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 December, the maximum UV index in San Mateo typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11131415141414141413109
Data source: San Mateo December 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 December 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 December’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 December’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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