Cascais Weather in April
April in Cascais typically sees daytime highs of 17°C (63°F) and nighttime lows of 13°C (55°F). Expect some rainfall during the month.
Rainfall in Cascais in April
Records from the past 30 years suggest around 12 days of rain, with 56 mm (2.2 in) average for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Cascais in April
In April, Cascais gets moderate temperatures, with highs of 17°C (63°F). Nights cool to around 13°C (55°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Cascais in April
The city usually sees around 276 hours of sunlight, indicating many sunny days — a great month for sightseeing.April in Cascais has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Portugal, check out our Cascais's climate page.
Cascais Temperature in April
Min Temperature
13°C (55°F)
Max Temperature
17°C (63°F)
Chance of Rain
40%
Precipitation
56 mm (2.2 in)
Rainy days
12 days
Humidity
73%
Sunshine
276 hours
Percentage Sunshine
69%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cascais typically stay consistent throughout April, with daily highs averaging around 17°C (63°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 12°C (54°F).
Average temperatures in April
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in April
Historical weather for Cascais in April
Browse day-by-day weather records for Cascais spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cascais historical weather extremes in April
Based on 50 years of weather observations in Cascais between 1976 and 2026, these are the recorded extremes.
- Cascais recorded its highest April temperature of 33°C (91°F) on April 30, 1997.
- The lowest daytime temperature in April was 9°C (48°F), recorded on April 10, 1978.
- Cascais registered its coldest April night on April 9, 1986, with temperatures dropping to 4°C (39°F).
Best Places in Portugal in April
Find out more about the weather in Portugal and which places have the best travel conditions in this month. See all of Portugal in April →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Cascais in April
For Cascais in April, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Cascais in April
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Portugal, check out our Cascais's climate page.
Temperature Rainfall Sunshine Humidity
See the full Cascais climate overview or explore weather in Portugal.
