Port Blanc surf break

Port Blanc surfForecast / Brittany – Morbihan / France

information circle12 Day Weather and Surf, issued 7 pm Sunday 29 Jun 2025 CEST
Forecast update in hr  min  s Forecast update imminent
Port Blanc surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Port Blanc sea temperature is
18.5° C
(Which is 1.4°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Port Blanc this week:

The surf forecast for Port Blanc over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jun 30) at 5AM. The primary swell is predicted to be 1.1m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Port Blanc in the next 12 days are 1.5m 10s and forecast to arrive on Sunday (Jul 06) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Friday (Jul 04) at 2AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Mon 30th Jun)3.5ft (1.1m) 11s
Best Surf 5AM (Mon 30th Jun)3.5ft (1.1m) 11s
Most Powerful11PM (Sun 6th Jul)5ft (1.5m) 10s

Table - best surf conditions forecast for Port Blanc over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Monday
30
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Fri
11
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.2
W
1
W
1
W
0.8
W
1.1
W
1
W
0.9
W
0.7
W
1.3
WNW
1
W
0.7
W
0.6
W
0.4
W
0.4
WNW
0.8
WNW
0.6
WNW
0.4
WNW
0.4
WNW
1.1
W
1.5
WNW
1.3
W
1.3
W
1.2
W
1.5
W
1.2
WNW
0.8
WNW
1.1
W
0.9
WNW
0.9
W
1.2
W
1.1
W
0.9
WNW
0.9
W
0.5
W
0.7
W
0.6
W
Period(s) (?)111110101110109899988467111110101096884545589999
Wave
Graph
(?)Metric surfscale
Energy (?)36123521823726920214810029819778563020162519783196723274022511391949048572866531621227479100
Wind
(km/h)
10
NNE
10
SE
15
W
15
NNW
5
SE
20
W
20
N
25
NW
35
NW
30
N
15
NNE
30
W
30
NNE
10
NNE
30
W
20
N
15
W
25
W
20
W
20
WNW
30
W
25
WNW
25
W
30
W
25
NNW
15
WNW
35
W
20
NNW
10
WNW
35
W
15
N
5
WSW
20
W
20
W
20
WNW
35
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
oncrosscross-
off
oncross-
off
cross-
on
cross-
on
crosscross-
off
oncross-
off
cross-
off
oncrossononononononononcross-
on
cross-
on
oncross-
on
ononcrossononononon
High Tide
/ height (m)
8:43PM
4.16
9:09AM
3.70
9:27PM
3.93
9:54AM
3.50
10:12PM
3.69
10:42AM
3.33
11:02PM
3.46
11:37AM
3.21
11:59PM
3.29
12:40PM
3.16
1:06AM
3.20
1:46PM
3.20
2:13AM
3.21
2:45PM
3.31
3:11AM
3.31
3:36PM
3.47
3:59AM
3.45
4:20PM
3.65
4:42AM
3.61
5:00PM
3.84
5:21AM
3.76
5:38PM
4.02
5:58AM
3.89
6:15PM
4.17
Low Tide
/ height (m)
3:02AM
0.54
3:15PM
0.74
3:49AM
0.75
4:03PM
0.94
4:37AM
0.96
4:54PM
1.14
5:28AM
1.14
5:49PM
1.30
6:23AM
1.27
6:49PM
1.38
7:20AM
1.33
7:50PM
1.38
8:18AM
1.31
8:49PM
1.29
9:12AM
1.22
9:42PM
1.14
10:01AM
1.08
10:29PM
0.96
10:46AM
0.92
11:12PM
0.78
11:27AM
0.75
11:53PM
0.62
12:07PM
0.61
Monday
30
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Fri
11
Sunrise-6:18--6:18--6:18--6:20--6:20--6:20--6:22--6:22--6:22--6:24--6:24--6:26-
Sunset--10:13--10:13--10:13--10:12--10:12--10:12--10:10--10:10--10:09--10:09--10:08--10:08
clearclearclearclearclearclearclearcloudpart cloudclearclearclearclearclearclearclearpart cloudpart cloudlight raincloudpart cloudpart cloudpart cloudrain showersclearclearpart cloudclearclearclearclearclearpart cloudcloudcloudclear
Rain (mm)
------------------1----1------------
Temp. °C282325242023242024221822241922261617181717181718181719201517191618181821
Feels °C (?)252223222122211617141616181715191313161514131313101513131413151616161615

Short Range Forecast: Mostly dry. Warm (max 28°C on Sun night, min 17°C on Tue night). Winds increasing (light winds from the SE on Tue morning, fresh winds from the NW by Wed afternoon).

Days 3-6 Weather Summary Mostly dry. Warm (max 26°C on Fri night, min 14°C on Wed night). Winds decreasing (fresh winds from the NNE on Thu night, light winds from the NW by Sat morning).

Days 6-9 Weather Summary Light rain (total 2mm), mostly falling on Sat night. Very mild (max 19°C on Tue afternoon, min 14°C on Mon night). Winds decreasing (strong winds from the W on Mon night, light winds from the WNW by Tue morning).

Long Range Forecast: Mostly dry. Warm (max 21°C on Fri afternoon, min 14°C on Tue night). Winds decreasing (fresh winds from the WNW on Tue night, calm by Thu morning).

  • 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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Information about the Port Blanc Surf forecast

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

Port Blanc is 31 km (19 miles) from Lorient. If you plan a holiday in Morbihan - Brittany, look for hotels and other accommodation in Lorient. Lorient has rooms for a wide range of budgets as well as car hire and transport links.

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