January Weather in Serta, Portugal

Last updated: August 27, 2025

In January, the average temperature in Serta, Portugal hovers around 8°C (47°F), with possible lows of -3°C (27°F) and highs reaching 19°C (66°F). Expect approximately 52 mm (2.0 in) of precipitation over an average of 5 days, and be prepared for a high level of humidity, typically around 85%.

January Temperature in Serta

In January in Serta, the average temperature is 8°C (47°F), with maximums reaching 19°C (66°F) and minimums dropping to as low as -3°C (27°F). This variation in temperature makes it essential to pack layers for your trip, ensuring you're prepared for both mild and cold conditions.

January Weather in Serta: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Serta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Serta, January typically has an average temperature of 8°C (47°F), with highs reaching up to 19°C (66°F) and lows dropping to around -3°C (27°F).

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

January Precipitation in Serta

In Serta in January, the precipitation amount is 52 mm (2.0 in) over a span of 5 days.

January Precipitation Trends in Serta

The chart displays monthly precipitation patterns in Serta, 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 Serta, January typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 5 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 Serta

In Serta in January humidity is 85%. With an average temperature of 8°C (47°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities feel less refreshing and more uncomfortable for traveling.

January Average Humidity in Serta

This chart illustrates the average monthly humidity levels in Serta, 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 Serta 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 Serta

In Serta 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 Serta, you can check the information here.

Maximum UV Index Levels in Serta for January

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

Data source: Serta 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 Serta Compares to Other Months

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

This table compares monthly weather conditions in Serta, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	52 mm (2.0 inches)	85%	moderate
February Weather	10°C (51°F)	78 mm (3.1 inches)	75%	moderate
March Weather	12°C (53°F)	121 mm (4.8 inches)	72%	high
April Weather	14°C (57°F)	108 mm (4.3 inches)	70%	very high
May Weather	18°C (64°F)	50 mm (1.9 inches)	70%	very high
June Weather	20°C (68°F)	21 mm (0.8 inches)	63%	extreme
July Weather	23°C (73°F)	6 mm (0.2 inches)	60%	very high
August Weather	23°C (74°F)	8 mm (0.3 inches)	60%	very high
September Weather	21°C (71°F)	35 mm (1.4 inches)	67%	very high
October Weather	17°C (63°F)	75 mm (2.9 inches)	74%	high
November Weather	12°C (54°F)	117 mm (4.6 inches)	83%	moderate
December Weather	10°C (50°F)	102 mm (4.0 inches)	85%	moderate