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Surf Forecasts:
Lostmarc'h surfForecast / Brittany – Finistere / France
48hr Weather and Surf, issued 6 am Monday 15 Dec 2025 CETForecast update in hr min s Forecast update imminent
Lostmarc'h surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Lostmarc'h sea temperature is
12.2° C
(Which is normal for this time of year)How big are the waves at Lostmarc'h today?
The current surf forecast for Lostmarc'h at 12PM is: 3.5m 13s primary swell from a West direction and 0.6m 18s secondary swell from a West direction, 1.4m 6s secondary swell from a South direction (forecast issued at 06:00am December 15). The wind direction is predicted to be cross-onshore.
| Time (CET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 11ft (3.5m) | 13s |
| Afternoon (15 Dec) | 10ft (3.0m) | 13s |
| Evening (15 Dec) | 11ft (3.5m) | 15s |
Table - waves today at Lostmarc'h. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thu 18 | |||||||||||||||||||||
| 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 13 | 13 | 13 | 13 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3466 | 4336 | 4308 | 4576 | 3088 | 4899 | 4682 | 5536 | 5839 | 5685 | 5241 | 5462 | 4819 | 4363 | 3998 | 3701 | 3504 | 3154 | 2623 | 2223 | 1682 | 2571 | 3165 | 3732 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 1:23AM 4.10 | 1:44PM 4.14 | 2:12AM 4.26 | 2:33PM 4.28 | 2:55AM 4.45 | 3:15PM 4.44 | ||||||||||||||||||
Low Tide / height (m) | 7:31AM 1.60 | 7:56PM 1.46 | 8:24AM 1.44 | 8:43PM 1.32 | 9:09AM 1.25 | 9:26PM 1.17 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thu 18 | |||||||||||||||||||||
| Sunrise | - | - | 9:00 | - | - | - | - | - | - | - | 9:02 | - | - | - | - | - | - | - | 9:03 | - | - | - | - | - |
| Sunset | - | - | - | - | 5:23 | - | - | - | - | - | - | - | 5:23 | - | - | - | - | - | - | - | 5:23 | - | - | - |
 |  |  | |  |  | | | | | | | | |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | 5 | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 |
| Temp. °C | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 10 | 10 | 10 | 11 | 11 | 12 | 11 | 11 |
| Feels °C (?) | 4 | 6 | 6 | 6 | 2 | 8 | 7 | 5 | 7 | 5 | 5 | 4 | 5 | 5 | 6 | 6 | 9 | 7 | 5 | 4 | 3 | 4 | 2 | 2 |
- 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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