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January Weather in San Isidro, Philippines

Last updated: August 27, 2025

In January, the average temperature in San Isidro, Philippines is a warm 26°C (79°F), perfect for enjoying the outdoors. Expect a comfortable range, with minimums around 20°C (68°F) and maximums reaching 33°C (91°F). Be prepared for some rain, as the area sees an average precipitation of 61 mm (2.4 in) over about 5 days. The humidity levels average a sultry 76%, adding to the climate’s tropical feel.

January Temperature in San Isidro

In January in San Isidro, the average temperature is 26°C (79°F). Maximum temperatures can reach 33°C (91°F), while minimums may drop to as low as 20°C (68°F). This pleasant and warm climate makes San Isidro an ideal destination for travelers seeking comfortable weather.

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

The chart illustrates January temperature patterns in San Isidro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Isidro, January typically has an average temperature of 26°C (79°F), with highs reaching up to 33°C (91°F) and lows dropping to around 20°C (68°F).
JanFebMarAprMayJunJulAugSepOctNovDec797982858684828282828280
Data source: Temperature data for San Isidro 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 Isidro

In San Isidro, in January, the precipitation amount is 61 mm (2.4 in) over the course of 5 days.

January Precipitation Trends in San Isidro

The chart displays monthly precipitation patterns in San Isidro, 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 Isidro, January typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec61261717120208354269307217117116
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Isidro

In San Isidro in January humidity is 76%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities challenging and requiring frequent breaks to hydrate and cool down during your travels.

January Average Humidity in San Isidro

This chart illustrates the average monthly humidity levels in San Isidro, 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 Isidro is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%71%69%69%76%87%89%89%89%86%89%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Isidro

In San Isidro 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 Isidro.

Maximum UV Index Levels in San Isidro for January

The chart shows the monthly maximum UV Index (UVI) for San Isidro 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 Isidro typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111314151314141414131110
Data source: San Isidro 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 Isidro Compares to Other Months

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

This table compares monthly weather conditions in San Isidro, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)61 mm (2.4 inches)76%extreme
February Weather26°C (79°F)26 mm (1.0 inches)71%extreme
March Weather28°C (83°F)17 mm (0.7 inches)68%extreme
April Weather29°C (85°F)17 mm (0.7 inches)69%extreme
May Weather30°C (86°F)120 mm (4.7 inches)76%extreme
June Weather29°C (85°F)208 mm (8.2 inches)87%extreme
July Weather28°C (83°F)354 mm (13.9 inches)88%extreme
August Weather28°C (83°F)268 mm (10.6 inches)89%extreme
September Weather28°C (83°F)307 mm (12.1 inches)89%extreme
October Weather28°C (82°F)217 mm (8.5 inches)86%extreme
November Weather28°C (82°F)117 mm (4.6 inches)89%extreme
December Weather27°C (81°F)116 mm (4.6 inches)86%very high

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