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January Weather in San Sebastian, Philippines

Last updated: August 27, 2025

In January, the average temperature in San Sebastian, Philippines is a pleasant 26°C (78°F), with a minimum of 22°C (72°F) and a maximum reaching 30°C (87°F). Expect some rain, as precipitation totals around 307 mm (12.1 in) over 22 days. With humidity levels averaging 82%, it's a month where you might feel the heat and humidity combined!

January Temperature in San Sebastian

In January in San Sebastian, the average temperature is 26°C (78°F), with maximums reaching 30°C (87°F) and minimums dropping to as low as 22°C (72°F). It's a great time to visit for warm weather and pleasant outdoor activities.

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

The chart illustrates January 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, January typically has an average temperature of 26°C (78°F), with highs reaching up to 30°C (87°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec787880818383828282818179
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.

January Precipitation in San Sebastian

In San Sebastian in January, the total precipitation amount reaches 307 mm (12.1 in) over the course of 22 days.

January Precipitation Trends in San Sebastian

The chart displays monthly precipitation patterns in San Sebastian, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In San Sebastian, January typically receives around 307 mm (12.1 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec307157131113173252330297340306307411
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Sebastian

In San Sebastian in January, humidity is 82%. With an average temperature of 26°C (78°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier and the air almost tangible, which can be quite challenging for traveling.

January Average Humidity in San Sebastian

This chart illustrates the average monthly humidity levels in San Sebastian, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in San Sebastian is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%78%77%79%83%86%87%87%88%85%89%89%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Sebastian

In San Sebastian in January, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in San Sebastian.

Maximum UV Index Levels in San Sebastian for January

The chart shows the monthly maximum UV Index (UVI) for San Sebastian in January, 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 January, the maximum UV index in San Sebastian typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111315151414141415131111
Data source: San Sebastian January 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 January 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 January’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 January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (78°F)307 mm (12.1 inches)82%extreme
February Weather25°C (78°F)157 mm (6.2 inches)78%extreme
March Weather26°C (80°F)131 mm (5.1 inches)77%extreme
April Weather27°C (81°F)113 mm (4.4 inches)79%extreme
May Weather28°C (83°F)173 mm (6.8 inches)83%extreme
June Weather28°C (83°F)252 mm (9.9 inches)86%extreme
July Weather28°C (82°F)330 mm (13.0 inches)87%extreme
August Weather28°C (82°F)297 mm (11.7 inches)87%extreme
September Weather28°C (82°F)340 mm (13.4 inches)88%extreme
October Weather27°C (81°F)306 mm (12.1 inches)85%extreme
November Weather27°C (81°F)307 mm (12.1 inches)89%extreme
December Weather26°C (80°F)411 mm (16.2 inches)89%extreme

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