Cabo de Sines surfForecast / Alentejo / Portugal

information circle12 Day Weather and Surf, issued 5 pm Monday 29 Dec 2025 WET
Forecast 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
15.7° C
(Which is slightly cooler than normal)


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 Tuesday (Dec 30) at 12AM. The primary swell is predicted to be 0.8m and 13s period with a secondary swell of 0.3m and 9s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Cabo de Sines in the next 12 days are 3.5m 11s and forecast to arrive on Saturday (Jan 03) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Friday (Jan 02) at 3AM.

Wave TypeTime (WET) & Date Wave Height & Period
Next good surf (1 star+)12AM (Tue 30th Dec)2.5ft (0.8m) 13s
Best Surf 3AM (Sun 4th Jan)10ft (3.0m) 11s
Most Powerful12PM (Sat 3rd Jan)11ft (3.5m) 11s

Table - best surf conditions forecast for Cabo de Sines over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Very mild (max 15°C on Wed afternoon, min 9°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 49mm), heaviest during Sat afternoon. Very mild (max 17°C on Thu night, min 13°C on Sat afternoon). Winds decreasing (near gales from the S on Fri morning, calm by Sun morning).

Mon
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
2
2
2
3
1
2
1
0
0
0
0
0
0
0
0
0
4
4
3
0
Swell
Height Map
Wave Height (m) & direction (?)
0.6
W
0.8
W
0.6
WNW
0.8
WNW
1.1
WNW
1.1
W
0.9
WNW
0.7
WNW
0.4
WNW
0.6
W
1.3
W
3
WSW
3.5
SSW
2.5
SSW
2.5
W
3.5
WSW
3
W
2.5
W
2.4
WSW
1.1
W
0.8
NNW
Period(s) (?)14131616141313121514121110912111111111011
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1382122143375364342461527414649321662021116917022912213018651268239149
Wind
(km/h)
5
NW
5
ESE
10
E
0
WNW
10
E
15
E
15
E
20
ESE
20
ESE
25
S
40
SSE
50
S
45
S
40
S
25
S
40
SW
20
W
0
SSW
0
NNE
25
NE
30
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off
cross-
off
glasscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
on
crosscross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
glassglassoffoff
High Tide
/ height (m)
10:06PM
2.83
10:33AM
2.90
11:12PM
2.98
11:41AM
2.99
12:09AM
3.15
12:43PM
3.07
1:07AM
3.33
1:38PM
3.18
1:58AM
3.48
2:29PM
3.25
2:46AM
3.57
3:16PM
3.26
3:32AM
3.60
Low Tide
/ height (m)
3:45PM
1.11
4:17AM
1.18
4:50PM
1.03
5:25AM
1.03
5:50PM
0.93
6:27AM
0.86
6:46PM
0.84
7:23AM
0.69
7:37PM
0.74
8:14AM
0.57
8:25PM
0.68
9:02AM
0.51
9:10PM
0.67
9:48AM
0.52
Mon
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Sunrise--7:50--7:50--7:50--7:50--7:50--7:50--7:50
Sunset5:23--5:23--5:24--5:25--5:27--5:28--5:28--
clear
clear
cloud
clear
clear
clear
clear
cloud
cloud
light rain
part cloud
light rain
mod rain
rain showers
rain showers
mod rain
thunderstorm
rain showers
rain showers
clear
clear
Rain (mm)
---------2-581359614--
Temp. °C13121213121315111516171716151414151516128
Feels °C (?)111110129912712131088710711141670
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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