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Surf Forecasts:

Praia dos Aivados surfForecast / Alentejo / Portugal

information circle12 Day Weather and Surf, issued 12 am Thursday 18 Sep 2025 WEST
Forecast update in hr  min  s Forecast update imminent
Praia dos Aivados surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Praia dos Aivados sea temperature is
18.2° C
 (Which is 2.8°C colder than average for this time of year)

Best Forecast Surf Conditions for Praia dos Aivados this week:

The surf forecast for Praia dos Aivados over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 7AM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.6m and 14s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Praia dos Aivados in the next 12 days are 1.5m 12s and forecast to arrive on Tuesday (Sep 23) at 4AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Friday (Sep 19) at 4PM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Thu 18th Sep)3.5ft (1.0m) 10s
Best Surf 7AM (Thu 18th Sep)3.5ft (1.0m) 10s
Most Powerful 4AM (Tue 23rd Sep)5ft (1.5m) 12s

Table - best surf conditions forecast for Praia dos Aivados over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 28°C on Thu morning, min 19°C on Sat afternoon). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 19°C on Sun morning, min 14°C on Mon night). Mainly fresh winds.

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wed
24
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
2
2
0
2
2
1
2
1
0
0
0
0
0
0
0
0
0
0
1
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
NW
0.8
NW
1.3
NW
1.3
WNW
1.2
WNW
1.1
WNW
1
WNW
0.9
WNW
0.8
WNW
0.7
WNW
1.3
NW
1.4
NW
1.4
NW
1.5
NW
1.5
NW
0.9
NNW
1.4
NNW
1.4
NW
1.3
NNW
0.8
NNW
0.8
NNW
Period(s) (?)1013121110101099877999121111679
Wave
Graph
(?)Metric surfscale
Energy kJ (?)246199448359283235179113866217920930436734321542543110456101
Wind
(km/h)
5
ESE
10
ESE
10
WNW
5
ESE
5
ENE
5
E
0
SE
5
SSW
15
NW
15
N
20
NNW
30
NW
15
N
20
N
25
NW
10
N
10
N
20
NW
10
NNW
10
NNW
15
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
off		cross-
on		glassglasscrossglassglasscross-
on		ononcross-
on		ononcross-
on		ononcross-
on		oncross-
on		cross-
on
High Tide
/ height (m)
12:57AM
2.26
1:11PM
2.57
1:43AM
2.43
1:55PM
2.74
2:21AM
2.57
2:32PM
2.86
2:54AM
2.68
3:06PM
2.91
3:25AM
2.74
3:37PM
2.91
3:55AM
2.76
4:08PM
2.85
4:24AM
2.73
4:38PM
2.74
Low Tide
/ height (m)
7:00AM
0.67
7:37PM
0.40
7:44AM
0.49
8:15PM
0.27
8:21AM
0.35
8:48PM
0.17
8:54AM
0.25
9:18PM
0.13
9:25AM
0.20
9:46PM
0.13
9:55AM
0.19
10:13PM
0.19
10:25AM
0.24
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wed
24
Sunrise-7:18--7:18--7:20--7:20--7:22--7:22--7:24-
Sunset--7:38--7:37--7:36--7:34--7:32--7:30--7:30
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
clear
clear
Rain (mm)
---------------------
Temp. °C252826232727222523181919171918171818172019
Feels °C (?)232525242728242421171514141513131515141816
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for Alentejo

  1. weather stationWind Update The wind is still cross-on at Praia dos Aivados (moderate winds from the NNW at Sines/Montes Chaos 18 km from Praia dos Aivados). 1.1m 10s swell from the NW with a 0.3m 15s groundswell, also from the NW. 2 swells combining to make bigger set waves.

    2 hours 42 minutes ago Praia dos Aivados
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18 km away, 2 h 42 min ago

25 km/h
NNW
0.0
18.2
Air / Water (°C)
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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 Praia dos Aivados 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.

View detailed surf forecast for Praia dos Aivados at:
surf-forecast.com

Information about the Praia dos Aivados Surf forecast

The above surf forecast table for Praia dos Aivados provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Praia dos Aivados can be found by selecting the local surf guide option on the grey menu. Our Praia dos Aivados 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 (Praia dos Aivados) 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 Praia dos Aivados 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.

Praia dos Aivados is 19 km (12 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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