January Weather in Estarreja, Portugal

Last updated: August 27, 2025

In January, the average temperature in Estarreja, Portugal is a mild 9°C (48°F), with a minimum dipping to -2°C (29°F) and a pleasant maximum reaching 21°C (70°F). Expect some rain, as the region receives about 88 mm (3.5 in) of precipitation over 7 days, contributing to an average humidity of 87%. Whether you're planning outdoor adventures or cozy indoor activities, be prepared for a dynamic climate!

January Temperature in Estarreja

In January in Estarreja, the average temperature is 9°C (48°F). The maximum can reach 21°C (70°F), while the minimum can drop as low as -2°C (29°F). This variation makes it a great time for travelers to enjoy both mild days and cozy evenings.

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

The chart illustrates January temperature patterns in Estarreja, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Estarreja, January typically has an average temperature of 9°C (48°F), with highs reaching up to 21°C (70°F) and lows dropping to around -2°C (29°F).

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

January Precipitation in Estarreja

In Estarreja in January, the precipitation amount is 88 mm (3.5 in) over a span of 7 days.

January Precipitation Trends in Estarreja

The chart displays monthly precipitation patterns in Estarreja, 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 Estarreja, January typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Estarreja

In Estarreja in January humidity is 87%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and requiring extra layers and careful planning for any activities.

January Average Humidity in Estarreja

This chart illustrates the average monthly humidity levels in Estarreja, 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 Estarreja is approximately 87%, 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 Estarreja

In Estarreja in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Estarreja, you can visit Hourly UV Index in Estarreja.

Maximum UV Index Levels in Estarreja for January

The chart shows the monthly maximum UV Index (UVI) for Estarreja 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 Estarreja typically reaches 2, which falls under the low exposure category.

Data source: Estarreja 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 Estarreja Compares to Other Months

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

This table compares monthly weather conditions in Estarreja, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	88 mm (3.5 inches)	87%	low
February Weather	11°C (52°F)	134 mm (5.3 inches)	81%	moderate
March Weather	12°C (54°F)	141 mm (5.6 inches)	78%	high
April Weather	14°C (57°F)	144 mm (5.7 inches)	79%	very high
May Weather	17°C (62°F)	80 mm (3.1 inches)	78%	very high
June Weather	18°C (65°F)	52 mm (2.0 inches)	71%	extreme
July Weather	20°C (69°F)	21 mm (0.8 inches)	63%	very high
August Weather	21°C (69°F)	18 mm (0.7 inches)	64%	very high
September Weather	20°C (68°F)	46 mm (1.8 inches)	71%	very high
October Weather	16°C (62°F)	113 mm (4.5 inches)	79%	high
November Weather	12°C (54°F)	161 mm (6.4 inches)	86%	moderate
December Weather	10°C (51°F)	187 mm (7.3 inches)	87%	low