17.04
thu
thu
Day
64°F
NE 10 mph
Precip.
100%
100%
Night
59°F
NE 14 mph
Precip.
100%
100%
18.04
fri
fri
Day
61°F
E 15 mph
Precip.
0%
0%
Night
57°F
SE 22 mph
Precip.
100%
100%
19.04
sat
sat
Day
59°F
SE 20 mph
Precip.
69%
69%
Night
55°F
SE 19 mph
Precip.
76%
76%
20.04
sun
sun
Day
59°F
E 12 mph
Precip.
87%
87%
Night
59°F
E 12 mph
Precip.
61%
61%
21.04
mon
mon
Day
63°F
E 9 mph
Precip.
100%
100%
Night
57°F
SE 9 mph
Precip.
0%
0%
22.04
tue
tue
Day
61°F
SE 14 mph
Precip.
0%
0%
Night
57°F
SE 10 mph
Precip.
0%
0%
23.04
wed
wed
Day
63°F
SE 13 mph
Precip.
74%
74%
Night
57°F
S 17 mph
Precip.
0%
0%
24.04
thu
thu
Day
63°F
S 17 mph
Precip.
0%
0%
Night
57°F
S 18 mph
Precip.
0%
0%
25.04
fri
fri
Day
63°F
S 20 mph
Precip.
0%
0%
Night
57°F
S 21 mph
Precip.
68%
68%
26.04
sat
sat
Day
61°F
S 24 mph
Precip.
86%
86%
Night
59°F
S 22 mph
Precip.
73%
73%
27.04
sun
sun
Day
63°F
S 19 mph
Precip.
87%
87%
Night
59°F
S 16 mph
Precip.
0%
0%
28.04
mon
mon
Day
64°F
S 14 mph
Precip.
0%
0%
Night
57°F
S 15 mph
Precip.
0%
0%
29.04
tue
tue
Day
63°F
SE 15 mph
Precip.
0%
0%
Night
59°F
SE 9 mph
Precip.
100%
100%
30.04
wed
wed
Day
63°F
S 17 mph
Precip.
0%
0%
Night
59°F
S 21 mph
Precip.
0%
0%
Sea water temperature in April, °F
Show year:
2025
2024
2023
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
54
56
58
60
62
64
66
68
The average sea water temperature in April of 2025 was 60.8°F. The highest and lowest sea temperatures during the month were 62.1°F and 59.4°F.
Sea water temperature in May, °F
Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
53
56
59
62
65
68
The average sea water temperature in May of 2024 was 60.1°F. The highest and lowest sea temperatures during the month were 61.7°F and 58.6°F.
Air temperature in Cascais, °F
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
12
24
36
48
60
72
84
96
60.4
64.0
69.9
73.2
75.5
74.2
69.6
66.9
63.4
60.3
59.7
58.7
56.6
59.8
64.7
66.4
66.3
65.6
63.3
60.0
57.4
55.1
54.8
54.4
| Day temperature | Night temperature |
Precipitation total in Cascais, in.
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.4
0.8
1.2
1.7
2.1
2.5
2.9
2.4
2.1
1.7
0.7
0.1
0.1
0.5
1.2
1.7
1.6
1.3
1.6
* Charts above show average data for the last 3 years.
Best time for vacation in Cascais
Cascais on a weather map
Leaflet | Tiles © Esri
Places in Portugal:
Name
°F
24 Hours Forecast
Cascais
Local time: 05:10
April 17, thursday
0600
59°F
SE
8 mph
8 mph
0900
61°F
NE
6 mph
6 mph
1200
64°F
NE
10 mph
10 mph
1500
63°F
NE
15 mph
15 mph
1800
61°F
NE
16 mph
16 mph
2100
61°F
NE
16 mph
16 mph
April 18, friday
0000
59°F
NE
14 mph
14 mph
0300
59°F
NE
15 mph
15 mph
