Weather · Cascais, Portugal
Cascais Weather in May
Cascais in May runs 20°C / 15°C with 26mm of rain, one of the best months to visit.
Avg high
20°C
68°F
Avg low
15°C
59°F
Rainfall
26mm
#10 wettest of 12
What to pack
Layers, plus a jacket for mornings and nights. Rain is unlikely to interrupt your plans.
Timing a trip around the weather? A Local Friend in Cascais builds it around the season for you.