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Lostmarc'h Surf Forecast
/ Brittany – Finistere (75 surf breaks) /
Surf Forecasts:
Lostmarc'h surfForecast / Brittany – Finistere / France
48hr Weather and Surf, issued 7 am Thursday 18 Sep 2025 CEST
How big are the waves at Lostmarc'h today?
The current surf forecast for Lostmarc'h at 12PM is: 2.3m 12s primary swell from a West direction (forecast issued at 07:00am September 18). The wind direction is predicted to be cross-onshore.
| Time (CEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 8ft (2.5m) | 12s |
| Afternoon (18 Sep) | 7ft (2.2m) | 11s |
| Evening (18 Sep) | 6ft (1.8m) | 10s |
Table - waves today at Lostmarc'h. (Swell directed towards the surf break)
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| 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 | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 12 | 12 | 12 | 11 | 10 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 8 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2318 | 1976 | 1602 | 1258 | 1049 | 751 | 663 | 514 | 502 | 502 | 590 | 580 | 494 | 426 | 361 | 306 | 287 | 276 | 275 | 329 | 548 | 1310 | 1736 | 1764 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross | cross- on | cross- on | on | cross- on | cross | cross- on | cross | cross- on | cross- on | cross- on | on | on | on |
High Tide / height (m) | 3:23AM 4.26 | 3:43PM 4.63 | 4:12AM 4.62 | 4:28PM 4.98 | 4:51AM 4.93 | 5:04PM 5.26 | ||||||||||||||||||
Low Tide / height (m) | 9:28AM 1.35 | 10:01PM 0.98 | 10:17AM 0.98 | 10:43PM 0.65 | 10:57AM 0.67 | 11:19PM 0.41 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| Sunrise | - | 7:58 | - | - | - | - | - | - | - | 7:58 | - | - | - | - | - | - | - | - | 8:00 | - | - | - | - | - |
| Sunset | - | - | - | - | - | 8:24 | - | - | - | - | - | - | - | 8:22 | - | - | - | - | - | - | - | 8:21 | - | - |
 |  |  | | | |  | | | | | | | |  | | | |  | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 17 | 19 | 18 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 16 | 15 | 15 | 15 |
| Feels °C (?) | 15 | 16 | 16 | 15 | 15 | 16 | 15 | 14 | 14 | 14 | 15 | 16 | 17 | 18 | 17 | 17 | 17 | 15 | 15 | 12 | 6 | 6 | 8 | 8 |
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Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Brittany - Finistere
The wind is still cross-on at Lostmarc'h (light winds from the S at Lanveoc Poulmic Airport 12 km from Lostmarc'h). A 2.3m groundswell from the W
1 h 17 min ago
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