Lisbon
Portugal
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Lisbon, Portugal

April, like March, in Lisbon, Portugal, is another comfortable spring month, with average temperature varying between 11.9°C (53.4°F) and 19.8°C (67.6°F).

Temperature

In April, the average high-temperature is almost the same as in March - a still comfortable 19.8°C (67.6°F). In April, in Lisbon, the average low-temperature is 11.9°C (53.4°F).

Rainfall

In Lisbon, during April, the rain falls for 11 days and regularly aggregates up to 68.1mm (2.68") of precipitation. In Lisbon, during the entire year, the rain falls for 112 days and collects up to 774mm (30.47") of precipitation.

Sea temperature

In Lisbon, the average water temperature is 16.3°C (61.3°F).
Note: For swimming, a surface water temperature of 16.3°C (61.3°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

In April, the average length of the day in Lisbon, Portugal, is 13.2h.

Sunshine

In Lisbon, the average sunshine in April is 8h.

UV index

In Lisbon, Portugal, the average daily maximum UV index in April is 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in April in Lisbon?

In April, the average high-temperature is 19.8°C (67.6°F), and the average low-temperature is 11.9°C (53.4°F).

How many days does it rain in April in Lisbon?

In April, the rain falls for 11 days. Throughout April, 68.1mm (2.68") of precipitation is accumulated.

What is the sea temperature in April in Lisbon?

In Lisbon, in April, the average water temperature is 16.3°C (61.3°F). For swimming, a surface water temperature of 16.3°C (61.3°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the average length of the day in April in Lisbon?

In April, the average length of the day in Lisbon, Portugal, is 13.2h.

How long on average sun shines in April in Lisbon?

The average sunshine in April in Lisbon is 8h.

How high is the UV index in April in Lisbon?

The average daily maximum UV index in April is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in April - Lisbon, Portugal
  • Average high temperature in April: 19.8°C

The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in April: 11.9°C

The month with the highest average low temperature is August (18.6°C).
The coldest month (with the lowest average low temperature) is January (8.3°C).

Average rainfall in April - Lisbon, Portugal
  • Average rainfall in April: 68.1mm

The wettest month (with the highest rainfall) is November (127.6mm).
The driest month (with the least rainfall) is July (4.2mm).

Average rainfall days in April - Lisbon, Portugal
  • Average rainfall days in April: 11 days

Months with the highest number of rainy days are January, February and December (14 days).
Months with the least rainy days are July and August (2 days).

Average sea temperature in April - Lisbon, Portugal
  • Average sea temperature in April: 16.3°C

The best month for swimming (with the highest average sea temperature) is September (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).

Average daylight in April / Average sunshine in April - Lisbon, Portugal
  • Average daylight in April: 13.2h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in April: 8h

Months with the most sunshine are July and August (Average sunshine: 11h).
Months with the least sunshine are January, February, November and December (Average sunshine: 5).

Average UV index in April - Lisbon, Portugal
  • Average UV index in April: 6

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January and December (UV index 2).