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December Weather in San Martin, Philippines

Last updated: August 27, 2025

In December, the average temperature in San Martin, Philippines hovers around 25°C (78°F). Expect a pleasant range, with minimums dipping to 21°C (69°F) and highs reaching 30°C (87°F). Be prepared for significant rainfall, with about 310 mm (12.2 in) over 29 days, and anticipate a high average humidity of 91%, creating a tropical atmosphere throughout the month.

December Temperature in San Martin

In December in San Martin, the average temperature is 25°C (78°F). Maximums can reach 30°C (87°F), while minimums can be as low as 21°C (69°F). This pleasant and mild weather makes it an ideal time for outdoor activities and sightseeing.

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

The chart illustrates December temperature patterns in San Martin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Martin, December typically has an average temperature of 25°C (78°F), with highs reaching up to 30°C (87°F) and lows dropping to around 21°C (69°F).
JanFebMarAprMayJunJulAugSepOctNovDec777778798079787978787878
Data source: Temperature data for San Martin 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 Martin

In San Martin, in December, the total precipitation amount is 310 mm (12.2 in) spread over 29 days.

December Precipitation Trends in San Martin

The chart displays monthly precipitation patterns in San Martin, 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 Martin, December typically receives around 310 mm (12.2 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec275192183188419445366326322355287310
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Martin

In San Martin in December, humidity is 91%. With an average temperature of 25°C (78°F), this humidity feels like a warm, sticky embrace, making travel feel heavy and sluggish as you navigate through the air thick with moisture.

December Average Humidity in San Martin

This chart illustrates the average monthly humidity levels in San Martin, 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 Martin is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%86%84%82%83%85%86%87%89%85%87%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Martin

In San Martin in December, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in San Martin.

Maximum UV Index Levels in San Martin for December

The chart shows the monthly maximum UV Index (UVI) for San Martin 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 Martin typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec131516161514141415141312
Data source: San Martin 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 Martin Compares to Other Months

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

This table compares monthly weather conditions in San Martin, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)275 mm (10.8 inches)88%extreme
February Weather25°C (77°F)192 mm (7.6 inches)86%extreme
March Weather26°C (78°F)183 mm (7.2 inches)84%extreme
April Weather26°C (79°F)188 mm (7.4 inches)82%extreme
May Weather26°C (80°F)419 mm (16.5 inches)83%extreme
June Weather26°C (79°F)445 mm (17.5 inches)85%extreme
July Weather26°C (79°F)366 mm (14.4 inches)86%extreme
August Weather26°C (79°F)326 mm (12.8 inches)87%extreme
September Weather26°C (79°F)322 mm (12.7 inches)89%extreme
October Weather26°C (78°F)355 mm (14.0 inches)85%extreme
November Weather26°C (79°F)287 mm (11.3 inches)87%extreme
December Weather25°C (78°F)310 mm (12.2 inches)91%extreme

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