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Cabo de Sines surfForecast / Alentejo / Portugal
12 Day Weather and Surf, issued 12 am Friday 19 Sep 2025 WEST
Best Forecast Surf Conditions for Cabo de Sines this week:
The surf forecast for Cabo de Sines over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 19) at 7AM. The primary swell is predicted to be 1.1m and 10s period with a secondary swell of 0.1m and 15s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Cabo de Sines in the next 12 days are 2.0m 9s and forecast to arrive on Monday (Sep 22) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Saturday (Sep 20) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Fri 19th Sep) | 3.5ft (1.1m) 10s |
| Best Surf | 7AM (Fri 19th Sep) | 3.5ft (1.1m) 10s |
| Most Powerful | 7AM (Mon 22nd Sep) | 6.5ft (2.0m) 9s |
Table - best surf conditions forecast for Cabo de Sines over the next 12 days.
Short Range Forecast Mostly dry. Warm (max 27°C on Fri morning, min 15°C on Sat night). Winds increasing (calm on Thu night, fresh winds from the NNW by Sun afternoon). | Days 3-6 Weather Summary Mostly dry. Warm (max 23°C on Wed morning, min 13°C on Sun night). Winds decreasing (fresh winds from the N on Sun night, light winds from the N by Tue night). | |||||||||||||||||||||
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thu 25 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 11 | 10 | 10 | 10 | 9 | 9 | 6 | 7 | 7 | 8 | 9 | 9 | 8 | 10 | 9 | 5 | 7 | 9 | 9 | 9 | 6 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 359 | 255 | 240 | 179 | 113 | 157 | 177 | 255 | 341 | 453 | 537 | 437 | 319 | 211 | 211 | 57 | 42 | 43 | 33 | 8 | 7 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | cross | glass | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross | cross- off | cross- off | cross- on | glass | glass | cross | |
High Tide / height (m) | 1:52AM 2.95 | 2:04PM 3.26 | 2:31AM 3.10 | 2:42PM 3.37 | 3:04AM 3.20 | 3:16PM 3.42 | 3:35AM 3.25 | 3:48PM 3.42 | 4:04AM 3.27 | 4:17PM 3.35 | 4:33AM 3.23 | 4:46PM 3.24 | 5:01AM 3.16 | 5:15PM 3.09 | ||||||||
Low Tide / height (m) | 7:50AM 0.99 | 8:21PM 0.76 | 8:28AM 0.84 | 8:54PM 0.68 | 9:01AM 0.74 | 9:24PM 0.65 | 9:32AM 0.70 | 9:53PM 0.66 | 10:01AM 0.71 | 10:19PM 0.71 | 10:30AM 0.76 | 10:46PM 0.80 | 10:59AM 0.86 | |||||||||
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thu 25 | ||||||||||||||||
| Sunrise | - | 7:20 | - | - | 7:20 | - | - | 7:20 | - | - | 7:22 | - | - | 7:22 | - | - | 7:24 | - | - | 7:24 | - | |
| Sunset | - | - | 7:37 | - | - | 7:36 | - | - | 7:35 | - | - | 7:32 | - | - | 7:30 | - | - | 7:30 | - | - | 7:28 | |
 |  |  | | | |  | | | | | | | | | |  | |  | | | ||
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | - | - | |
| Temp. °C | 22 | 27 | 26 | 21 | 23 | 23 | 18 | 20 | 21 | 15 | 19 | 20 | 17 | 22 | 21 | 19 | 23 | 21 | 21 | 22 | 21 | |
| Feels °C (?) | 22 | 27 | 26 | 23 | 21 | 20 | 14 | 15 | 14 | 8 | 14 | 14 | 13 | 18 | 16 | 16 | 20 | 18 | 20 | 21 | 18 | |
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Alentejo
Continuing clean conditions at Cabo de Sines (calm at Sines 3 km from Cabo de Sines). 1.2m 10s swell from the WNW to make surfable waves.
2 h 55 min ago
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cabo de Sines surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Cabo de Sines Surf forecast
The above surf forecast table for Cabo de Sines provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Cabo de Sines can be found by selecting the local surf guide option on the grey menu. Our Cabo de Sines surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Cabo de Sines) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Cabo de Sines may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Cabo de Sines is 2 km (1 miles) from Sines. If you plan a holiday in Portugal - Alentejo, look for hotels and other accommodation in Sines. Sines has rooms for a wide range of budgets as well as car hire and transport links.
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