The temperatures in Cascais in May are comfortable with low of 15°C and and high up to 22°C.
You can expect up to 3 rainy days in Cascais during the month of May.
Our weather forecast can give you a great sense of what weather to expect in Cascais in May 2025.
If you’re planning to visit Cascais in the near future, we highly recommend that you review the 14 day weather forecast for Cascais before you arrive.
Temperatures
22° / 15°
Rainy Days
1
Snowy Days
0
Dry Days
30
Rainfall
23
mm
Sun Hours
11.1
Hrs
