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Surf Forecasts:

Port Blanc surf break

Port Blanc surfForecast / Brittany – Morbihan / France

information circle12 Day Weather and Surf, issued 7 am Thursday 21 Aug 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
18.9° C
 (Which is 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 Friday (Aug 22) at 11AM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.2m and 5s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Port Blanc in the next 12 days are 2.5m 17s and forecast to arrive on Tuesday (Aug 26) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Friday (Aug 22) at 2AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Fri 22nd Aug)2.5ft (0.8m) 12s
Best Surf11AM (Wed 27th Aug)8ft (2.4m) 14s
Most Powerful 8PM (Tue 26th Aug)8ft (2.5m) 17s

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

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

Short Range Forecast Mostly dry. Warm (max 23°C on Sat night, min 14°C on Fri morning). Winds decreasing (fresh winds from the W on Thu afternoon, light winds from the SSE by Sat afternoon).

Days 3-6 Weather Summary Mostly dry. Warm (max 28°C on Mon afternoon, min 15°C on Tue night). Winds increasing (calm on Mon night, fresh winds from the W by Tue night).

Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
1
0
0
1
0
0
1
0
1
0
1
2
0
0
3
4
1
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.3
WSW
0.7
W
0.4
WSW
0.8
W
0.8
W
0.8
W
0.7
W
0.6
W
0.6
W
0.5
W
0.4
WSW
0.4
WSW
0.7
W
0.4
SW
0.7
WSW
1.7
WSW
2.5
WSW
2.5
WSW
2.4
WSW
2
W
1.8
W
Period(s) (?)631312111010998811102023191716141413
Wave
Graph
(?)Metric surfscale
Energy (?)122067189170144946674464787161224599214963023518225215051070
Wind
(km/h)
15
N
30
W
25
NE
15
ENE
25
W
25
NE
15
E
10
WSW
25
ENE
20
E
10
SW
20
ENE
25
E
5
SW
15
S
20
WNW
30
W
15
NNW
5
WSW
20
WSW
30
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crossoncross-
off		offoncross-
off		offcross-
on		cross-
off		offcross-
on		offoffcross-
on		crosscross-
on		oncross-
on		glasscross-
on		cross-
on
High Tide
/ height (m)
4:47PM
4.15
5:13AM
4.01
5:28PM
4.38
5:50AM
4.17
6:04PM
4.51
6:23AM
4.24
6:36PM
4.54
6:54AM
4.25
7:06PM
4.48
7:22AM
4.20
7:35PM
4.34
7:49AM
4.09
8:03PM
4.14
Low Tide
/ height (m)
10:16AM
0.75
10:48PM
0.47
11:02AM
0.49
11:30PM
0.26
11:42AM
0.29
12:08AM
0.13
12:19PM
0.18
12:44AM
0.10
12:55PM
0.17
1:19AM
0.16
1:30PM
0.26
1:52AM
0.32
2:05PM
0.43
2:25AM
0.55
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Sunrise7:15--7:16--7:18--7:18--7:20--7:22--7:22--
Sunset-9:15--9:13--9:10--9:08--9:07--9:05--9:02-
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
rain showers
Rain (mm)
--------------------1
Temp. °C182022162021162223202727232826191919161818
Feels °C (?)161418141517121919162423172623151514171615
  • 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 Brittany - Morbihan

  1. weather stationWind Update Cross-shore wind has turned cross-on at Port Blanc (light winds from the WNW at Quiberon 4 km from Port Blanc). 0.3m 6s windswell from the W to make surfable waves.

    47 minutes ago Port Blanc
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Actual: 47 min ago

16 km/h
WNW
Cross-On
Please reload the page to see if there are any updates.

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 Port Blanc 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 Port Blanc at:
surf-forecast.com

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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