January Weather in Santo Isidoro, Portugal

Last updated: August 27, 2025

In January, the average temperature in Santo Isidoro, Portugal hovers around 13°C (55°F). Expect cool days with temperatures dipping to a minimum of 7°C (45°F) and peaking at 18°C (64°F). Be prepared for some rain, as 48 mm (1.9 in) of precipitation is likely over the course of 7 days. With an average humidity of 85%, the air may feel a bit more damp, making it a perfect time to enjoy cozy indoor activities!

January Temperature in Santo Isidoro

In January in Santo Isidoro, the average temperature is 13°C (55°F), with maximums reaching 18°C (64°F) and minimums dropping as low as 7°C (45°F). This mild weather makes Santo Isidoro an ideal destination for travelers seeking a comfortable climate to explore and enjoy outdoor activities.

January Weather in Santo Isidoro: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Santo Isidoro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Isidoro, January typically has an average temperature of 13°C (55°F), with highs reaching up to 18°C (64°F) and lows dropping to around 7°C (45°F).

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

January Precipitation in Santo Isidoro

In Santo Isidoro in January, the total precipitation amount is 48 mm (1.9 in) over a span of 7 days.

January Precipitation Trends in Santo Isidoro

The chart displays monthly precipitation patterns in Santo Isidoro, 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 Santo Isidoro, January typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 7 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 Santo Isidoro

In Santo Isidoro in January, humidity is 85%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making even short walks feel exhausting and urging travelers to seek shade and refreshment frequently.

January Average Humidity in Santo Isidoro

This chart illustrates the average monthly humidity levels in Santo Isidoro, 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 Santo Isidoro is approximately 85%, 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 Santo Isidoro

In Santo Isidoro in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Santo Isidoro, you can check the information here.

Maximum UV Index Levels in Santo Isidoro for January

The chart shows the monthly maximum UV Index (UVI) for Santo Isidoro 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 Santo Isidoro typically reaches 3, which falls under the moderate exposure category.

Data source: Santo Isidoro 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 Santo Isidoro Compares to Other Months

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

This table compares monthly weather conditions in Santo Isidoro, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (55°F)	48 mm (1.9 inches)	85%	moderate
February Weather	13°C (56°F)	63 mm (2.5 inches)	75%	moderate
March Weather	13°C (56°F)	69 mm (2.7 inches)	72%	high
April Weather	14°C (58°F)	77 mm (3.0 inches)	70%	very high
May Weather	16°C (61°F)	39 mm (1.5 inches)	70%	very high
June Weather	17°C (62°F)	16 mm (0.6 inches)	63%	extreme
July Weather	18°C (64°F)	6 mm (0.2 inches)	60%	very high
August Weather	18°C (64°F)	6 mm (0.2 inches)	60%	very high
September Weather	18°C (65°F)	32 mm (1.3 inches)	67%	very high
October Weather	17°C (63°F)	63 mm (2.5 inches)	74%	high
November Weather	15°C (60°F)	99 mm (3.9 inches)	83%	moderate
December Weather	14°C (58°F)	82 mm (3.2 inches)	85%	moderate