January Weather in Samil, Portugal

Last updated: August 27, 2025

In Samil, Portugal, the average temperature in January hovers around 4°C (40°F). Prepare for a chill, as the temperature can dip to a minimum of -5°C (23°F), while occasionally reaching a pleasant maximum of 17°C (62°F). Expect around 54 mm (2.1 in) of precipitation over 7 days, contributing to a cozy average humidity of 91%.

January Temperature in Samil

In January in Samil, the average temperature is 4°C (40°F), with maximums reaching up to 17°C (62°F) and minimums dropping as low as -5°C (23°F). It's advisable to pack layers to stay comfortable in the fluctuating temperatures while exploring the area.

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

The chart illustrates January temperature patterns in Samil, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Samil, January typically has an average temperature of 4°C (40°F), with highs reaching up to 17°C (62°F) and lows dropping to around -5°C (23°F).

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

January Precipitation in Samil

In Samil in January, the precipitation amount is 54 mm (2.1 in) over a duration of 7 days.

January Precipitation Trends in Samil

The chart displays monthly precipitation patterns in Samil, 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 Samil, January typically receives around 54 mm (2.1 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 Samil

In Samil in January, humidity is 91%. With an average temperature of 4°C (40°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor travel uncomfortable and necessitating extra layers for warmth.

January Average Humidity in Samil

This chart illustrates the average monthly humidity levels in Samil, 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 Samil is approximately 91%, 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 Samil

In Samil 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 Samil, you can visit Hourly UV Index in Samil.

Maximum UV Index Levels in Samil for January

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

Data source: Samil 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 Samil Compares to Other Months

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

This table compares monthly weather conditions in Samil, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	54 mm (2.1 inches)	91%	low
February Weather	7°C (45°F)	95 mm (3.7 inches)	85%	moderate
March Weather	8°C (47°F)	99 mm (3.9 inches)	79%	high
April Weather	11°C (52°F)	92 mm (3.6 inches)	77%	very high
May Weather	15°C (60°F)	51 mm (2.0 inches)	76%	very high
June Weather	18°C (65°F)	48 mm (1.9 inches)	64%	extreme
July Weather	22°C (71°F)	18 mm (0.7 inches)	54%	very high
August Weather	21°C (71°F)	16 mm (0.6 inches)	52%	very high
September Weather	18°C (65°F)	45 mm (1.8 inches)	63%	very high
October Weather	14°C (57°F)	74 mm (2.9 inches)	78%	high
November Weather	8°C (47°F)	110 mm (4.3 inches)	90%	moderate
December Weather	6°C (43°F)	127 mm (5.0 inches)	91%	low