April Weather in Lisbon, United States

Last updated: June 24, 2025

In April, the average temperature in Lisbon, United States hovers around 7°C (44°F). Weather can be quite variable, with minimums dipping to -4°C (24°F) and maximums soaring to 26°C (79°F). Expect around 118 mm (4.7 in) of precipitation spread across 12 days, accompanied by a high average humidity of 80%. 🌧️

April Temperature in Lisbon

In April in Lisbon, the average temperature is 7°C (44°F), with maximums reaching 26°C (79°F) and minimums dropping as low as -4°C (24°F). It's advisable to pack layers to prepare for the wide range of temperatures while exploring the area.

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

The chart illustrates April 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, April typically has an average temperature of 7°C (44°F), with highs reaching up to 26°C (79°F) and lows dropping to around -4°C (24°F).

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

April Precipitation in Lisbon

In Lisbon in April, the total precipitation amount is 118 mm (4.7 in) over the course of 12 days.

April Precipitation Trends in Lisbon

The chart displays monthly precipitation patterns in Lisbon, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Lisbon, April typically receives around 118 mm (4.7 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Lisbon

In Lisbon in April humidity is 80%. With an average temperature of 7°C (44°F), this humidity feels like a chilly dampness that clings to your skin, making it essential to dress in layers and be prepared for a slightly uncomfortable but invigorating travel experience.

April Average Humidity in Lisbon

This chart illustrates the average monthly humidity levels in Lisbon, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Lisbon is approximately 80%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Lisbon

In Lisbon in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Lisbon.

Maximum UV Index Levels in Lisbon for April

The chart shows the monthly maximum UV Index (UVI) for Lisbon in April, 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 April, the maximum UV index in Lisbon typically reaches 7, which falls under the high exposure category.

Data source: Lisbon April 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 April 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 April’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 April’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