January Weather in Sines, Portugal

Last updated: August 27, 2025

In January, the average temperature in Sines, Portugal hovers around 11°C (52°F), making it a refreshing time of year. Minimum temperatures can dip to 2°C (35°F), while the maximum can reach a pleasant 22°C (71°F). Be prepared for some slight rain, as the area experiences about 31 mm (1.2 in) of precipitation over 5 days. With an average humidity of 80%, the atmosphere carries a mild, invigorating charm.

January Temperature in Sines

In January in Sines, the average temperature is 11°C (52°F), with maximums reaching up to 22°C (71°F) and minimums dropping as low as 2°C (35°F). This mild weather makes Sines a great destination for travelers looking to explore the outdoors comfortably.

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

The chart illustrates January temperature patterns in Sines, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sines, January typically has an average temperature of 11°C (52°F), with highs reaching up to 22°C (71°F) and lows dropping to around 2°C (35°F).

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

January Precipitation in Sines

In Sines in January, the precipitation amount is 31 mm (1.2 in) spread over 5 days.

January Precipitation Trends in Sines

The chart displays monthly precipitation patterns in Sines, 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 Sines, January typically receives around 31 mm (1.2 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 Sines

In Sines in January, humidity is 80%. With an average temperature of 11°C (52°F), this humidity feels like a damp blanket wrapping around you, making travel a bit uncomfortable as you navigate through the thick, languid air.

January Average Humidity in Sines

This chart illustrates the average monthly humidity levels in Sines, 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 Sines is approximately 80%, 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 Sines

In Sines 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 Sines, you can check the information here.

Maximum UV Index Levels in Sines for January

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

Data source: Sines 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 Sines Compares to Other Months

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

This table compares monthly weather conditions in Sines, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (52°F)	31 mm (1.2 inches)	80%	moderate
February Weather	13°C (55°F)	55 mm (2.2 inches)	73%	moderate
March Weather	14°C (57°F)	82 mm (3.2 inches)	71%	high
April Weather	15°C (59°F)	70 mm (2.7 inches)	69%	very high
May Weather	18°C (65°F)	27 mm (1.1 inches)	69%	very high
June Weather	19°C (67°F)	9 mm (0.4 inches)	67%	extreme
July Weather	21°C (70°F)	3 mm (0.1 inches)	69%	very high
August Weather	21°C (71°F)	2 mm (0.1 inches)	68%	very high
September Weather	21°C (70°F)	13 mm (0.5 inches)	71%	very high
October Weather	18°C (65°F)	45 mm (1.8 inches)	75%	high
November Weather	15°C (59°F)	62 mm (2.4 inches)	78%	moderate
December Weather	13°C (55°F)	52 mm (2.0 inches)	81%	moderate