January Weather in San Isidro, Philippines

Last updated: August 27, 2025

In San Isidro, Philippines, the average temperature in January hovers around 27°C (80°F), with daily variations ranging from a minimum of 25°C (77°F) to a maximum of 29°C (84°F). Expect ample rainfall during this time, with 312 mm (12.3 in) of precipitation typically spread over 23 days. With an average humidity of 90%, the air can feel quite heavy, adding to the tropical ambiance of this vibrant locale.

January Temperature in San Isidro

In January in San Isidro, the average temperature is 27°C (80°F), with maximums reaching 29°C (84°F) and minimums dropping to as low as 25°C (77°F). This pleasant climate makes it an ideal destination for travelers seeking warm weather and outdoor activities.

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 27°C (80°F), with highs reaching up to 29°C (84°F) and lows dropping to around 25°C (77°F).

Data source: Temperature data for San Isidro generated using information from the Copernicus Climate Change Service.

January Precipitation in San Isidro

In San Isidro in January, the precipitation amount is 312 mm (12.3 in) spread over 23 days, showcasing a significant level of rainfall during that period.

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 312 mm (12.3 inches) of precipitation spread over approximately 23 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in San Isidro

In San Isidro in January humidity is 90%. With an average temperature of 27°C (80°F), this humidity feels like a warm embrace that can quickly become overwhelming for travelers. The sticky air clings to your skin, making even the simplest activities feel exhausting and requiring frequent breaks in the shade to stay comfortable.

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 90%, offering insight into how humid the weather typically is during this month.

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 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, 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 13, which falls under the extreme exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (80°F)	312 mm (12.3 inches)	90%	extreme
February Weather	26°C (80°F)	264 mm (10.4 inches)	90%	extreme
March Weather	27°C (80°F)	202 mm (7.9 inches)	90%	extreme
April Weather	27°C (81°F)	137 mm (5.4 inches)	88%	extreme
May Weather	28°C (82°F)	187 mm (7.4 inches)	83%	extreme
June Weather	28°C (82°F)	210 mm (8.3 inches)	81%	extreme
July Weather	28°C (83°F)	216 mm (8.5 inches)	80%	extreme
August Weather	28°C (83°F)	178 mm (7.0 inches)	81%	extreme
September Weather	28°C (82°F)	167 mm (6.6 inches)	84%	extreme
October Weather	28°C (82°F)	269 mm (10.6 inches)	81%	extreme
November Weather	27°C (81°F)	282 mm (11.1 inches)	84%	extreme
December Weather	27°C (81°F)	477 mm (18.8 inches)	88%	extreme