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April Weather in Lisbon, United States

Last updated: June 24, 2025

In April, the average temperature in Lisbon, United States hovers around 4°C (40°F). Expect a chilly minimum of -17°C (2°F), while the mercury can rise to a pleasant maximum of 24°C (75°F). Precipitation is typically 51 mm (2.0 in) over 8 days, contributing to an average humidity of 79%. Be prepared for a mix of cold snaps and warmer days!

April Temperature in Lisbon

In April in Lisbon, the average temperature is 4°C (40°F), with maximums reaching 24°C (75°F) and minimums dipping as low as -17°C (2°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to enjoy their visit.

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 4°C (40°F), with highs reaching up to 24°C (75°F) and lows dropping to around -17°C (2°F).
JanFebMarAprMayJunJulAugSepOctNovDec121129405669736961443020
Data source: Temperature data for Lisbon generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Lisbon

In Lisbon in April, the total precipitation amount is 51 mm (2.0 in), spread over a duration of 8 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 51 mm (2.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1820285157797110867841637
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Lisbon

In Lisbon in April, humidity is 79%. With an average temperature of 4°C (40°F), this humidity feels like a chilly dampness that wraps around you, making outdoor activities uncomfortable and leaving you longing for warmth as your breath hangs in the air.

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 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%89%82%79%74%78%76%77%72%74%85%85%
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.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
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.
 TemperaturePrecipitationHumidityUV
January Weather-11°C (13°F)18 mm (0.7 inches)87%low
February Weather-11°C (12°F)20 mm (0.8 inches)89%moderate
March Weather-2°C (29°F)28 mm (1.1 inches)82%moderate
April Weather4°C (40°F)51 mm (2.0 inches)79%high
May Weather14°C (57°F)57 mm (2.3 inches)74%very high
June Weather21°C (70°F)79 mm (3.1 inches)78%very high
July Weather23°C (73°F)71 mm (2.8 inches)76%very high
August Weather20°C (69°F)108 mm (4.2 inches)77%very high
September Weather16°C (61°F)66 mm (2.6 inches)72%high
October Weather7°C (45°F)84 mm (3.3 inches)74%moderate
November Weather-1°C (30°F)16 mm (0.6 inches)85%moderate
December Weather-7°C (20°F)37 mm (1.5 inches)84%low

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