April weather forecast
Cascais, Portugal

Pursuing milder conditions, the weather in April in Cascais spotlights a welcoming rise in warmth. Reflecting a typical spring climate, the city sees serene days interspersed with rare rainy ones. Showers recorded fall to 70mm (2.76") as the lineage of decreasing rain from March continues. Even as May approaches, with its warmer air and marginally more frequent sunshine, April holds its charm amidst great weather stability and moderate sunshine hours.

Temperature

The average high-temperature for April is a still comfortable 18°C (64.4°F), closely aligning with the temperature of the preceding month. Cascais cools down to an average low-temperature of 11°C (51.8°F) throughout the month of April.

Rainfall

In April, in Cascais, the rain falls for 12 days. Throughout April, 70mm (2.76") of precipitation is accumulated. Throughout the year, there are 116 rainfall days, and 841mm (33.11") of precipitation is accumulated.

Sea temperature

In Cascais, Portugal, in April, the average water temperature is 16.3°C (61.3°F).
Note: For most, swimming in 16.3°C (61.3°F) is not a pleasant activity. Breathing becomes increasingly challenging as water temperature descends from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Cascais, the average length of the day in April is 13h and 14min.
On the first day of April, sunrise is at 07:21 and sunset at 20:01. On the last day of the month, sunrise is at 06:40 and sunset at 20:29 WEST.

Sunshine

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

UV index

The average daily maximum UV index in April in Cascais is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 6 in April interprets into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.