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Surf Forecasts:
Cabo de Sines surfForecast / Alentejo / Portugal
48hr Weather and Surf, issued 6 am Monday 18 May 2026 WESTForecast 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 2PM is: 1.5m 13s primary swell from a Northwest direction and 0.1m 17s secondary swell from a Southwest direction (forecast issued at 06:00am May 18). The wind direction is predicted to be cross-shore.
| Time (WEST) & Date | Wave Height | Wave 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 ForecastMostly dry. Warm (max 26°C on Wed morning, min 14°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 10 | WNW 16 | WNW 15 | WNW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | |
308 | 767 | 732 | 721 | 599 | 503 | 440 | 425 | 396 | 297 | 286 | 208 | 255 | 315 | 245 | 612 | 1279 | 2412 | 2245 | 2116 | 1830 | 1597 | 1211 | 967 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | off | off | off | cross-on | cross-on | cross-on | cross-off | cross-off | |
High Tide | 4:09AM3.37m | 4:29PM3.54m | 4:59AM3.26m | 5:18PM3.46m | 5:51AM3.11m | 6:10PM3.33m | ||||||||||||||||||
Low Tide | 10:08AM0.60m | 10:41PM0.53m | 10:54AM0.72m | 11:32PM0.64m | 11:44AM0.88m | 00:29AM0.80m | ||||||||||||||||||
 |  |  | | |  |  | | | | | | | | | | | | | | | | | | |
 | 6:22 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — | 6:20 |
 | — | — | — | — | — | 8:40 | — | — | — | — | — | — | — | 8:40 | — | — | — | — | — | — | — | 8:42 | — | 8:43 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 13 | 13 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 16 | 18 | 18 | 18 | 19 | 17 | 17 | 17 | 22 | 26 | 24 | 22 | 20 | 21 |
9 | 10 | 11 | 11 | 10 | 11 | 12 | 12 | 13 | 13 | 15 | 16 | 15 | 14 | 16 | 15 | 15 | 15 | 21 | 24 | 22 | 20 | 19 | 20 | |
Swell 1 Height (m) Direction Period (s) | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | WNW 14 | NW 10 | NW 10 | WNW 15 | WNW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 |
 kJ | 308 | 767 | 732 | 721 | 599 | 503 | 440 | 425 | 396 | 297 | 286 | 208 | 255 | 41 | 245 | 373 | 1279 | 2412 | 2245 | 2116 | 1830 | 1597 | 1211 | 967 |
Swell 2 Height (m) Direction Period (s) | NW 10 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | WNW 15 | WNW 15 | SW 15 | WNW 16 | WNW 16 | NW 10 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 |
| kJ | 35 | 12 | 12 | 12 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 21 | 21 | 9 | 104 | 612 | 341 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | NNW 8 | S 18 | SW 18 | — | — | — | W 17 | — | W 16 | W 16 | W 15 | SW 16 | SW 15 | W 18 | WNW 13 | SW 15 | SW 15 | — | — | — | — | — | — | — |
| kJ | 11 | 6 | 12 | — | — | — | 6 | — | 5 | 5 | 4 | 10 | 9 | 6 | 35 | 9 | 8 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 6 | NW 6 | — | — | — | NW 4 | NW 4 | — | — | — | — | — | — | NW 10 | NW 4 | — | — | — | — | — | — | — | — | — |
| kJ | 65 | 88 | — | — | — | 16 | 14 | — | — | — | — | — | — | 315 | 39 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 8 | 8 | 8 | 101 | 519 | 519 | 89 | 0 | 0 | 0 | 0 | 89 | 89 | 89 | 20 | 0 | 0 | 0 | 0 | 67 | 67 | 67 | 0 | 0 |
Best forecast wave conditions in Portugal - Alentejo | ||||||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||||||
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