Cascais weather in April 2026

Expect daytime maximum temperatures of 18°C in Cascais, Portugal in April based on long-term weather averages. There are 8 hours of sunshine per day on average with 12 days with some rainfall and typically 70 mm of rainfall in the month.

  • 18°C maximum daytime temperature in April in Cascais18
    18°C max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in April in Cascais12
    12 days with some rainfall
  • 11°C minimum night-time temperature in April in Cascais11
    11°C min night temperature
  • 13 hours of daylight per day in April in Cascais13
    13 hours of daylight per day
  • No heat & humidity in April in Cascais0
    No heat & humidity
  • 70 mm monthly rainfall in April in Cascais70
    70 mm of monthly rainfall
  • UV (maximum) index 6 (High) in April in Cascais6
    6 (High) UV index
  • 15°C sea temperature in April in Cascais15
    15°C sea temperature

More about Cascais

Cascais by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Portugal

Jet2: Low Fare Finder - find cheap flights

  • Find the cheapest flights with the Jet2 Low Fare Finder
  • Simply say where and when you like to travel
  • Low fares from Leeds Bradford, Manchester and more
Go to Jet2 deal >>

View all Jet2 offers

The April weather guide for Portugal (Cascais) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about Portugal

How hot is it in Cascais in April?

Daytime temperatures usually reach 18°C in Cascais in April, falling to 11°C at night.

How sunny is it in Cascais in April?

There are normally 8 hours of bright sunshine each day in Cascais in April - that's 58% of daylight hours.

How warm is the sea around Cascais in April?

The average sea temperature around Cascais in April is 15°C.

Does it rain in Cascais in April?

There are usually 12 days with some rain in Cascais in April and the average monthly rainfall is 70mm.

Cascais April sunrise & sunset times

Browse the sunrise and sunset times for Cascais in April 2026. Select a month to view Cascais sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st April 2026 06:23 19:01
Wednesday, 15th April 2026 06:02 19:14
Thursday, 30th April 2026 05:42 19:29

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^