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Surf Forecasts:
Cabo de Sines surfForecast / Alentejo / Portugal
48hr Weather and Surf, issued 12 pm 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 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) & 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). 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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
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 | NW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | |
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) | ||||||||||||||||||||||||
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 | ||||||||||||||||||
 |  | | |  |  | |  | | | | |  | | | | | | | | | | | | |
 | 6:22 | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:20 | — |
 | — | — | — | 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) | 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 | NW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 |
 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) | 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 | SW 14 | SW 14 |
| 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) | SW 18 | — | — | — | W 17 | — | W 16 | W 16 | W 15 | SW 16 | SW 15 | SW 15 | WNW 13 | SW 15 | SW 15 | — | — | — | — | — | — | — | — | — |
| kJ | 12 | — | — | — | 6 | — | 5 | 5 | 4 | 10 | 9 | 9 | 35 | 9 | 8 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NW 4 | NW 4 | NW 4 | — | — | — | — | NW 3 | NW 10 | NW 5 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 12 | 18 | 11 | — | — | — | — | 2 | 348 | 53 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
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 | ||||||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||||||
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