Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Cabo de Sines surfForecast / Alentejo / Portugal
48hr Weather and Surf, issued 5 am Saturday 20 Dec 2025 WETForecast 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
16.1° 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 9AM is: 3.5m 15s primary swell from a Northwest direction (forecast issued at 05:00am December 20). The wind direction is predicted to be cross-onshore and the swell rating is 11.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Dec) | 11ft (3.5m) | 15s |
| Afternoon (20 Dec) | 8ft (2.5m) | 15s |
| Evening (20 Dec) | 10ft (3.0m) | 14s |
Table - waves today at Cabo de Sines. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 20 | Sunday 21 | Monday 22 | Tue 23 | |||||||||||||||||||||
| 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 14 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 6947 | 5884 | 4938 | 3967 | 3371 | 1507 | 3128 | 4996 | 7121 | 7991 | 9095 | 8898 | 8246 | 7933 | 7143 | 6761 | 6395 | 6207 | 6564 | 5759 | 5358 | 4527 | 3844 | 3099 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | cross- on | cross- on | cross- on | cross | cross- on | cross- on | cross- off | cross | cross | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross | cross | cross |
High Tide / height (m) | 2:27AM 3.15 | 2:48PM 2.94 | 3:02AM 3.18 | 3:24PM 2.94 | 3:36AM 3.18 | 3:59PM 2.91 | ||||||||||||||||||
Low Tide / height (m) | 8:35AM 0.92 | 8:39PM 0.98 | 9:10AM 0.90 | 9:13PM 0.98 | 9:45AM 0.91 | 9:48PM 1.00 | ||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tue 23 | |||||||||||||||||||||
| Sunrise | - | - | 7:46 | - | - | - | - | - | - | - | 7:47 | - | - | - | - | - | - | - | 7:47 | - | - | - | - | - |
| Sunset | - | - | - | - | 5:17 | - | - | - | - | - | - | - | 5:19 | - | - | - | - | - | - | - | 5:19 | - | - | - |
 | |  |  |  |  | |  | | |  | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | 2 | 1 | - | 1 | 5 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | - | - | - | - | 2 |
| Temp. °C | 13 | 14 | 14 | 15 | 15 | 14 | 14 | 14 | 11 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 13 | 13 | 13 | 14 | 13 |
| Feels °C (?) | 8 | 10 | 11 | 11 | 11 | 8 | 9 | 6 | 4 | 4 | 5 | 5 | 3 | 4 | 5 | 6 | 6 | 6 | 6 | 8 | 7 | 7 | 9 | 8 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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