Weather · Cascais, Portugal
Cascais Weather in September
Cascais in September runs 22°C / 18°C with 59mm of rain, a reasonable time to visit.
Avg high
22°C
72°F
Avg low
18°C
64°F
Rainfall
59mm
#5 wettest of 12
What to pack
Summer clothes by day; a light layer for evenings. 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.