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January Weather in San Sebastian, Philippines

Last updated: August 27, 2025

The average temperature in San Sebastian, Philippines during January is a warm 26°C (80°F), with daily minimums dipping to 23°C (73°F) and topping out at a pleasant 29°C (85°F). Expect about 27 mm (1.1 in) of precipitation spread over 3 days, with an average humidity level of 77%. Ideal conditions for enjoying the season!

January Temperature in San Sebastian

In January in San Sebastian, the average temperature is 26°C (80°F). Maximums can reach 29°C (85°F), while minimums can be as low as 23°C (73°F). It's an ideal time for travelers seeking pleasant weather and 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 (80°F), with highs reaching up to 29°C (85°F) and lows dropping to around 23°C (73°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.

January Precipitation in San Sebastian

In San Sebastian in January, the total precipitation amount is 27 mm (1.1 in) over the course of 3 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 27 mm (1.1 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec27135111443755616782981705817
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 77%. With an average temperature of 26°C (80°F), this humidity feels like walking through a warm, damp blanket, making traveling somewhat uncomfortable and necessitating frequent breaks to stay hydrated and cool.

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 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 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 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414131314141413109
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 (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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