Measurements:
°C
°F
CURRENT WEATHER
23:53
Cascais
70°F
SE 13 mph
Feels like: 70°F
Precip: 27%
World Resorts Portugal Cascais Weather

14 Day Weather Forecast

09.08
tue
DAY
70°F
S 16 mph
precip
27%
NIGHT
70°F
SE 13 mph
precip
27%
09.09
wed
DAY
68°F
S 21 mph
precip
7%
NIGHT
68°F
S 24 mph
precip
15%
09.10
thu
DAY
70°F
S 19 mph
precip
8%
NIGHT
68°F
S 22 mph
precip
11%
09.11
fri
DAY
72°F
S 13 mph
precip
7%
NIGHT
68°F
S 18 mph
precip
14%
09.12
sat
DAY
74°F
S 10 mph
precip
8%
NIGHT
74°F
S 15 mph
precip
5%
09.13
sun
DAY
80°F
SW 1 mph
precip
2%
NIGHT
74°F
S 11 mph
precip
4%
09.14
mon
DAY
76°F
N 9 mph
precip
4%
NIGHT
74°F
SE 6 mph
precip
13%
09.15
tue
DAY
76°F
NE 8 mph
precip
4%
NIGHT
70°F
S 12 mph
precip
12%
09.16
wed
DAY
72°F
NE 18 mph
precip
20%
NIGHT
68°F
S 22 mph
precip
15%
09.17
thu
DAY
68°F
S 24 mph
precip
10%
NIGHT
68°F
S 23 mph
precip
11%
09.18
fri
DAY
70°F
SE 14 mph
precip
21%
NIGHT
68°F
NW 6 mph
precip
42%
09.19
sat
DAY
68°F
NW 7 mph
precip
59%
NIGHT
70°F
NW 9 mph
precip
42%
09.20
sun
DAY
68°F
NW 14 mph
precip
13%
NIGHT
68°F
NW 7 mph
precip
10%
09.21
mon
DAY
68°F
NW 11 mph
precip
9%
NIGHT
68°F
W 2 mph
precip
11%

Cascais Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Cascais was 64.0°F. The maximum and minimum values were 61.4°F and 67.2°F respectively.

Cascais on the Weather Map

Best Time to Visit Cascais
The most sunny months:
August 27 days
July 26 days
September 23 days
The most warm months:
August 79.2 °F
July 77.9 °F
September 77.6 °F
Warmest sea temperature:
September 66.3 °F
October 65.9 °F
August 65.6 °F
The most cold months:
January 60.0 °F
February 60.3 °F
March 62.2 °F
The most rainy months:
November 5 days
March 4 days
December 4 days
The most windy months:
July 14 mph
August 13 mph
June 13 mph
more details
Portugal Resorts:
NAME
F°
Albufeira +74
Algarve +76
Cascais +70
Ericeira +68
Faro +76
Funchal +64
Lagos +70
Lisbon +72
Madeira +64
Ponta Delgada +76
Portimao +66
Porto +66
Quarteira +76
Sao Miguel +76
Setubal +72
all resorts
24 Hours Weather Forecast
Cascais
Local time: 23:53
09 sep, wednesday
0000 70°F
SE
13 mph
0300 70°F
S
16 mph
0600 68°F
S
19 mph
0900 68°F
S
21 mph
1200 68°F
S
21 mph
1500 68°F
S
22 mph
1800 68°F
S
25 mph
2100 68°F
S
25 mph