January Weather in Lisbon, United States

Last updated: June 24, 2025

In January, the average temperature in Lisbon, United States hovers around -4°C (25°F). Expect chilly conditions, with minimum temperatures plummeting to -23°C (-10°F), while the maximum can reach up to 13°C (56°F). Be prepared for some moisture, as the area receives about 83 mm (3.3 in) of precipitation over 8 days, and the average humidity stays high at 86%.

January Temperature in Lisbon

In January in Lisbon, the average temperature is -4°C (25°F), with a maximum that can reach 13°C (56°F) and a minimum that can drop as low as -23°C (-10°F). It’s advisable to pack warm clothing and be prepared for chilly conditions while exploring the area.

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

The chart illustrates January temperature patterns in Lisbon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lisbon, January typically has an average temperature of -4°C (25°F), with highs reaching up to 13°C (56°F) and lows dropping to around -23°C (-10°F).

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

January Precipitation in Lisbon

In Lisbon in January, the precipitation amount reaches 83 mm (3.3 in) over the course of 8 days.

January Precipitation Trends in Lisbon

The chart displays monthly precipitation patterns in Lisbon, 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 Lisbon, January typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 8 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 Lisbon

In Lisbon in January, humidity is 86%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that seeps into your bones, making outdoor activities feel more strenuous and less enjoyable for traveling.

January Average Humidity in Lisbon

This chart illustrates the average monthly humidity levels in Lisbon, 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 Lisbon is approximately 86%, 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 Lisbon

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

Maximum UV Index Levels in Lisbon for January

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

Data source: Lisbon 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 Lisbon Compares to Other Months

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

This table compares monthly weather conditions in Lisbon, 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 (25°F)	83 mm (3.3 inches)	86%	low
February Weather	-3°C (27°F)	87 mm (3.4 inches)	84%	moderate
March Weather	0°C (33°F)	73 mm (2.9 inches)	82%	moderate
April Weather	7°C (44°F)	118 mm (4.7 inches)	80%	high
May Weather	12°C (55°F)	78 mm (3.1 inches)	72%	very high
June Weather	18°C (65°F)	66 mm (2.6 inches)	72%	very high
July Weather	21°C (70°F)	117 mm (4.6 inches)	67%	very high
August Weather	21°C (70°F)	77 mm (3.0 inches)	66%	very high
September Weather	17°C (63°F)	70 mm (2.8 inches)	71%	high
October Weather	11°C (53°F)	131 mm (5.1 inches)	78%	moderate
November Weather	4°C (39°F)	114 mm (4.5 inches)	84%	moderate
December Weather	-2°C (29°F)	120 mm (4.7 inches)	81%	low