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Surf Forecasts:
Cabo de Sines surfForecast / Alentejo / Portugal
48hr Weather and Surf, issued 12 pm Thursday 21 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
16.7° 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 9PM is: 1.4m 11s primary swell from a West-northwest direction and 0.2m 13s secondary swell from a South direction (forecast issued at 12:00pm May 21). The wind direction is predicted to be glassy and the swell rating is 3.
| Time (WEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 5ft (1.6m) | 12s |
| Afternoon (21 May) | 4.5ft (1.4m) | 11s |
| Evening (21 May) | 4.5ft (1.4m) | 11s |
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 28°C on Fri morning, min 16°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | |
636 | 575 | 458 | 419 | 469 | 444 | 515 | 534 | 604 | 572 | 551 | 572 | 561 | 572 | 478 | 485 | 415 | 343 | 427 | 302 | 291 | 232 | 227 | 281 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-on | cross | cross-off | glassy | cross-off | cross-off | glassy | glassy | glassy | cross-on | cross-on | cross-on | glassy | cross-on | cross-on | glassy | cross | cross | cross | cross | cross-on | glassy | glassy | |
High Tide | 7:09PM3.17m | 7:53AM2.77m | 8:14PM3.03m | 9:04AM2.68m | 9:25PM2.93m | |||||||||||||||||||
Low Tide | 12:40PM1.06m | 1:34AM0.96m | 1:46PM1.23m | 2:47AM1.08m | 3:03PM1.33m | 4:04AM1.13m | ||||||||||||||||||
 | | | |  | | | | | | |  |  |  | | | | | |  | | | | | |
 | 6:20 | — | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:18 | — |
 | — | — | — | 8:43 | — | — | — | — | — | — | — | 8:44 | — | — | — | — | — | — | — | 8:45 | — | — | — | 8:45 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 26 | 25 | 26 | 25 | 24 | 24 | 22 | 24 | 28 | 25 | 23 | 23 | 21 | 21 | 21 | 22 | 25 | 23 | 20 | 19 | 16 | 17 | 17 |
22 | 23 | 22 | 24 | 24 | 22 | 20 | 20 | 22 | 26 | 20 | 21 | 22 | 21 | 20 | 20 | 22 | 21 | 19 | 17 | 18 | 16 | 18 | 17 | |
Swell 1 Height (m) Direction Period (s) | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 |
 kJ | 636 | 575 | 458 | 419 | 469 | 444 | 515 | 534 | 604 | 572 | 551 | 572 | 561 | 572 | 478 | 485 | 415 | 343 | 427 | 302 | 291 | 232 | 227 | 281 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SSW 13 | S 7 | S 13 | S 13 | SSW 13 | SSW 13 | SSW 13 | SSW 14 | S 9 | S 10 | S 5 | S 4 | SSW 14 | NW 4 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 13 | NW 6 | NW 6 | SW 13 |
| kJ | 7 | 17 | 4 | 14 | 13 | 17 | 17 | 17 | 20 | 7 | 7 | 2 | 2 | 20 | 7 | 18 | 17 | 17 | 17 | 17 | 7 | 52 | 38 | 7 |
Swell 3 Height (m) Direction Period (s) | — | SW 13 | SW 13 | SW 16 | SW 16 | S 16 | S 16 | — | SW 14 | SW 14 | SSW 14 | S 12 | SSW 14 | — | SSW 14 | SSW 13 | — | — | — | N 10 | N 10 | SW 13 | SW 13 | N 9 |
| kJ | — | 7 | 7 | 10 | 10 | 5 | 5 | — | 8 | 8 | 21 | 3 | 20 | — | 20 | 18 | — | — | — | 2 | 2 | 7 | 7 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 4 | — | NW 5 | NW 5 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | 33 | 55 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 67 | 67 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 67 | 67 | 8 | 0 | 19 | 19 | 0 | 67 | 67 | 73 | 10 | 8 | 0 | 0 |
Best forecast wave conditions in Portugal - Alentejo | ||||||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||||||
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