Sao Lourenço surf break

Sao Lourenço surfForecast / Ericeira / Portugal

information circle12 Day Weather and Surf, issued 5 pm Thursday 11 Dec 2025 WET
Forecast update in hr  min  s Forecast update imminent
Sao Lourenço surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Sao Lourenço sea temperature is
15.9° C
(Which is slightly cooler than normal)


Best Forecast Surf Conditions for Sao Lourenço this week:

The surf forecast for Sao Lourenço over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Dec 12) at 3PM. The primary swell is predicted to be 4.5m and 17s period with a secondary swell of 2.2m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Sao Lourenço in the next 12 days are 5.5m 21s and forecast to arrive on Thursday (Dec 18) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Sunday (Dec 14) at 12PM.

Wave TypeTime (WET) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Fri 12th Dec)15ft (4.5m) 17s
Best Surf 3PM (Fri 12th Dec)15ft (4.5m) 17s
Most Powerful 3PM (Thu 18th Dec)18ft (5.5m) 21s

Table - best surf conditions forecast for Sao Lourenço over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 12mm), heaviest on Thu night. Very mild (max 16°C on Sat afternoon, min 11°C on Fri night). Mainly strong winds.

Days 3-6 Weather Summary Moderate rain (total 19mm), heaviest on Mon afternoon. Very mild (max 15°C on Sun afternoon, min 12°C on Sun night). Winds increasing (light winds from the SSE on Sun night, near gales from the N by Tue morning).

Thu
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
3
4
!
!
!
!
4
3
3
4
3
1
0
0
0
0
!
3
4
8
Swell
Height Map
Wave Height (m) & direction (?)
2.5
WNW
3
WNW
2.5
NW
4.5
WNW
6
NW
5
NW
4
NW
3
NW
2.5
NW
2.4
NW
2.5
NW
2.5
WNW
2.2
WNW
1.9
WNW
4
NW
5
NW
4
NW
3.5
NW
3
NW
2.3
NW
3
WNW
Period(s) (?)131416171817161413131413131314121313131215
Wave
Graph
(?)Metric surfscale
Energy kJ (?)202127733855119492133314207842741352288195225962211165712175621786656334103267715473682
Wind
(km/h)
15
SW
30
SSE
25
N
15
NNE
15
ENE
30
ENE
25
NE
20
NE
25
ENE
20
ENE
15
E
10
S
15
W
40
NNW
45
N
50
N
35
N
20
NNE
15
NNE
15
ESE
15
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
off
crosscross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcrossoncrosscrosscrosscrosscross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
8:08PM
2.16
8:27AM
2.38
9:14PM
2.13
9:33AM
2.29
10:17PM
2.16
10:35AM
2.25
11:13PM
2.24
11:31AM
2.27
12:00AM
2.34
12:19PM
2.32
12:41AM
2.45
1:01PM
2.38
1:20AM
2.55
Low Tide
/ height (m)
2:03AM
0.87
2:58PM
0.75
3:14AM
0.93
4:01PM
0.79
4:22AM
0.92
4:56PM
0.78
5:21AM
0.86
5:44PM
0.75
6:11AM
0.76
6:26PM
0.69
6:53AM
0.66
7:04PM
0.62
7:32AM
0.56
Thu
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Sunrise--7:46--7:47--7:48--7:48--7:48--7:50--7:50
Sunset5:15--5:15--5:15--5:15--5:15--5:15--5:15--
cloud
mod rain
light rain
light rain
rain showers
clear
clear
clear
clear
clear
part cloud
cloud
mod rain
rain showers
rain showers
part cloud
clear
clear
clear
clear
part cloud
Rain (mm)
-6312-------1072------
Temp. °C141413141215161414151314131314141313141313
Feels °C (?)111081171011991110121044449111110
  • 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 Sao Lourenço Surf forecast

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

Are you planning a holiday in Ericeira? If you are looking for accommodation near Sao Lourenço, camping, hotels and holiday cottages in Ericeira, consider staying in Torres Vedras which is 17 km (11 miles) away. Other places in and around Ericeira where you can find information about places to rent, and car hire include Sintra which is 24 km (15 miles) away, Rio de Mouro, Loures and Cacem.

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