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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 9°C (48°F). However, temperatures can range from a chilly -10°C (13°F) to a warm 28°C (83°F). Expect 81 mm (3.2 in) of precipitation spread over 11 days, coupled with an average humidity of 82%. Stay prepared for varied weather during your visit!

April Temperature in Lisbon

In April in Lisbon, the average temperature is 9°C (48°F). Maximum temperatures can reach 28°C (83°F), while the minimum can drop as low as -10°C (13°F). Be prepared for a wide range of weather conditions when traveling during this time.

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 9°C (48°F), with highs reaching up to 28°C (83°F) and lows dropping to around -10°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec212338486173767267523730
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 precipitation amount is 81 mm (3.2 in) over a span of 11 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 81 mm (3.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec4758738115012581831301364845
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 82%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making it essential to dress in layers for your travels while keeping an umbrella handy for unexpected drizzles.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%81%81%82%78%81%79%77%78%79%87%84%
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 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689111098633
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-6°C (21°F)47 mm (1.9 inches)81%moderate
February Weather-5°C (23°F)58 mm (2.3 inches)81%moderate
March Weather3°C (38°F)73 mm (2.9 inches)81%high
April Weather9°C (48°F)81 mm (3.2 inches)82%very high
May Weather16°C (62°F)150 mm (5.9 inches)78%very high
June Weather23°C (73°F)125 mm (4.9 inches)81%extreme
July Weather24°C (76°F)81 mm (3.2 inches)79%very high
August Weather22°C (73°F)83 mm (3.3 inches)77%very high
September Weather19°C (67°F)130 mm (5.1 inches)78%very high
October Weather11°C (53°F)136 mm (5.4 inches)78%high
November Weather3°C (38°F)48 mm (1.9 inches)87%moderate
December Weather-1°C (30°F)45 mm (1.8 inches)84%moderate

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