Lostmarc'h Surf Break

Lat Long: 48.21° N 4.56° W

Lostmarc'h 48 hour detailed Surf Forecast

Issued: 7 pm 17 Sep 2026 (local time)

Forecast update in  hr  min

Today's Lostmarc'h sea temperature is
18.3°C
1.4° 

Lostmarc'h surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Lostmarc'h today (18 Sep):

  • Morning surf: Morning surf (18 Sep, local time) - 8ft (2.5m), 14s period with WNW swell.
  • Afternoon surf: Afternoon surf (18 Sep, local time) - 8ft (2.5m), 14s period with WNW swell.
  • Evening surf: Evening surf (18 Sep, local time) - 7ft (2.1m), 13s period with WNW swell.

The current surf forecast for Lostmarc'h at 2AM is: 2.4m 10s primary swell from a West-northwest direction and 0.7m 15s secondary swell from a West direction (forecast issued at 07:00pm September 17). The wind direction is predicted to be cross-onshore.

Time (CEST) & DateWave HeightWave Period
Morning (18 Sep)8ft (2.5m)14s
Afternoon (18 Sep)8ft (2.5m)14s
Evening (18 Sep)7ft (2.1m)13s

Table - waves today at Lostmarc'h. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Very mild (max 19°C on Sun afternoon, min 16°C on Thu night). Wind will be generally light.

Thu
17
Friday
18
Saturday
19
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
0
1
0
1
1
2
1
1
1
1
1
1
1
1
0
0
1
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
WNW
9
2.1
WNW
9
2.2
WNW
10
2.4
WNW
10
2.5
WNW
13
2.5
WNW
14
2.5
WNW
14
2.5
WNW
14
2.3
WNW
13
2.2
WNW
13
2.1
WNW
13
2
WNW
12
2
WNW
12
2
WNW
12
2
WNW
12
2.1
WNW
11
2.1
WNW
11
2.1
WNW
11
2.1
WNW
11
Wave Graph
Metric surfscale
Energy kJ
690
734
942
1192
2196
2662
2611
2194
1876
1619
1442
1170
1114
1096
1041
1107
1087
1107
1068
Wind (km/h)
25
NW
20
NW
25
NW
20
NW
15
WNW
15
WNW
15
W
20
WSW
20
WSW
20
WSW
20
WSW
20
SW
20
SW
20
SW
20
SW
20
SW
20
WSW
15
W
15
W
Wind State
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
on
cross-on
cross-on
on
on
on
High Tide
9:20PM4.23m
9:39AM4.12m
10:06PM3.80m
10:36AM3.74m
Low Tide
3:23PM1.32m
3:39AM1.58m
4:09PM1.73m
4:32AM1.96m
5:20PM2.06m
clear
clear
cloud
cloud
clear
part cloud
cloud
clear
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:58
7:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:27
8:24
8:22
 mm
Temp °C
17
17
17
16
16
16
16
16
16
16
16
16
16
17
17
17
18
18
18
Feels °C
13
13
12
12
13
13
13
13
13
14
14
14
13
15
15
15
16
17
17
  • 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
How to use the Wavefinder 

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 Lostmarc'h 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.


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