Cabo de Sines surfForecast / Alentejo / Portugal

information circle48hr Weather and Surf, issued 12 pm Monday 18 May 2026 WEST
Forecast update in hr  min  s Forecast update imminent
Cabo de Sines surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cabo de Sines sea temperature is
16.8° C
(Which is slightly cooler than normal)

How big are the waves at Cabo de Sines today?

The current surf forecast for Cabo de Sines at 8PM is: 1.3m 12s primary swell from a Northwest direction and 0.1m 16s secondary swell from a Southwest direction, 0.6m 4s secondary swell from a Northwest direction (forecast issued at 12:00pm May 18). The wind direction is predicted to be cross-shore.

Time (WEST) & DateWave HeightWave Period
Morning (18 May)5ft (1.5m)13s
Afternoon (18 May)4.5ft (1.4m)12s
Evening (18 May)4.5ft (1.3m)12s

Table - waves today at Cabo de Sines. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 26°C on Wed morning, min 14°C on Mon morning). Winds decreasing (fresh winds from the NW on Tue afternoon, light winds from the ENE by Wed night).

Mon
18
Tuesday
19
Wednesday
20
Thu
21
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
Rating
(10 max)
2
1
0
1
1
2
2
2
2
0
0
0
1
4
4
4
4
3
2
2
3
3
3
3
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.5
NW
13
1.5
NW
13
1.4
NW
12
1.3
NW
12
1.3
NW
12
1.3
NW
12
1.3
NW
11
1.1
NW
11
1.1
NW
11
1
NW
10
1
NW
10
1.3
NW
10
1.1
NW
10
1.1
WNW
16
1.7
WNW
15
2.5
NW
14
2.5
WNW
14
2.5
WNW
13
2.3
WNW
13
2.2
WNW
13
2
WNW
13
1.8
WNW
12
1.7
WNW
12
1.6
WNW
12
Wave Graph
Metric surfscale
Energy kJ
732
721
599
503
440
469
396
297
249
208
196
348
245
612
1279
2519
2245
2116
1830
1597
1211
967
864
722
Wind (km/h)
15
NNW
15
NW
25
NW
20
NW
20
NNW
15
NNW
10
NNW
10
NNE
10
N
15
NW
25
NW
30
NW
25
NNW
15
NNE
15
NNE
15
NE
10
NE
10
WNW
15
W
15
W
5
NW
5
ENE
10
E
10
ESE
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
off
off
off
off
cross
cross-on
cross-on
cross
cross-off
cross-off
cross-off
High Tide
4:29PM3.54m
4:59AM3.26m
5:18PM3.46m
5:51AM3.11m
6:10PM3.33m
6:49AM2.93m
Low Tide
10:08AM0.60m
10:41PM0.53m
10:54AM0.72m
11:32PM0.64m
11:44AM0.88m
00:29AM0.80m
cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:22
6:20
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:40
8:40
8:42
8:43
Temp °C
14
15
15
15
14
14
14
14
16
18
18
18
19
17
17
17
22
26
24
22
20
21
21
21
11
12
10
11
11
12
12
13
15
16
14
13
16
15
15
15
21
24
21
20
19
20
19
18
Swell 1
Height (m)
Direction
Period (s)
1.5
NW
13
1.5
NW
13
1.4
NW
12
1.3
NW
12
1.3
NW
12
1.3
NW
12
1.3
NW
11
1.1
NW
11
1.1
NW
11
1
NW
10
1
NW
10
0.3
WNW
14
1.1
NW
10
1.5
NW
10
1.7
WNW
15
2.5
NW
14
2.5
WNW
14
2.5
WNW
13
2.3
WNW
13
2.2
WNW
13
2
WNW
13
1.8
WNW
12
1.7
WNW
12
1.6
WNW
12
Energy kJ
732
721
599
503
440
469
396
297
249
208
196
41
245
408
1279
2519
2245
2116
1830
1597
1211
967
864
722
Swell 2
Height (m)
Direction
Period (s)
0.1
SW
18
0.1
SW
17
0.1
SW
16
0.1
SW
16
0.1
SW
16
0.1
SW
16
0.1
SW
16
0.1
SW
16
0.1
SW
16
0.2
WNW
15
0.2
WNW
15
0.1
SW
15
0.4
WNW
16
1.1
WNW
16
1.4
NW
10
0.1
SW
15
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
Energy kJ
12
12
11
10
10
10
10
10
10
21
21
9
104
612
341
8
8
8
8
8
8
8
8
7
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
18
0.1
W
17
0.1
W
16
0.1
W
16
0.1
W
15
0.1
SW
16
0.1
SW
15
0.1
SW
15
0.3
WNW
13
0.1
SW
15
0.1
SW
15
Energy kJ
12
6
5
5
4
10
9
9
35
9
8
Wind waves
Height (m)
Direction
Period (s)
0.6
NW
4
0.7
NW
4
0.6
NW
4
0.4
NW
3
1.3
NW
10
1.1
NW
5
Energy kJ
12
18
11
2
348
53
Nearest Offshore or Glassy
Rating
(10 max)
3
2
2
2
2
2
2
2
2
2
2
3
2
4
4
4
4
4
4
4
4
3
3
3
Distance (km)
8
101
519
162
8
0
0
0
0
89
89
89
81
0
0
0
0
62
78
67
8
0
0
0
Best forecast wave conditions in Portugal - Alentejo
Rating
(10 max)
3
3
3
2
2
2
4
4
4
4
4
3
3
3
Best forecast wave conditions in Portugal
Rating
(10 max)
3
3
4
5
4
3
3
2
2
2
2
3
4
4
5
4
4
4
4
4
4
4
3
3
Header Global
Rating
(10 max)
4
4
4
5
4
4
4
4
4
4
4
4
4
4
5
5
4
4
4
5
5
5
4
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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