April weather forecast
Lisbon, Portugal

April exhibits renowned spring weather in Lisbon, marked by stretch in the daylight hours. The increase in sunshine showcases the city in a beautiful light, despite the occurrence of rainfall increasing to 68mm (2.68"). Average sea temperatures continue with their steady climb, pushing towards the warmer end of spectrum. With a manifest increase in daylight hours, April is a great time for sightseeing and outdoor activities in Lisbon. An additional highlight is that the UV index moves from moderate to high, prompting recommendations for sun protection during the day.

Temperature

As Lisbon welcomes April, the average high-temperature records at a still enjoyable 19.8°C (67.6°F), marking an insignificant deviation from the prior month. The average low-temperature of 11.9°C (53.4°F) is witnessed in Lisbon, Portugal, during April.

Rainfall

In April, the rain falls for 11 days. Throughout April, 68mm (2.68") of precipitation is accumulated. Throughout the year, in Lisbon, there are 112 rainfall days, and 774mm (30.47") of precipitation is accumulated.

Sea temperature

In April, the average sea temperature in Lisbon is 16.3°C (61.3°F).
Note: Swimming is not an enjoyable activity for the majority when the water is at 16.3°C (61.3°F). The difficulty of controlling breathing increases as the temperature dips from 21°C (69.8°F) to 15°C (59°F).

Daylight

In April, the average length of the day in Lisbon is 13h and 14min.
On the first day of the month, sunrise is at 07:20 and sunset at 20:00. On the last day of April, sunrise is at 06:39 and sunset at 20:28 WEST.

Sunshine

The average sunshine in April is 8h.

UV index

In Lisbon, the average daily maximum UV index in April is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: A maximum high daily UV index of 6 during April translates into the following directions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.