Surf Forecasts:
Le Dossen surf forecast from 31 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 8AM (local time) - 5ft (1.5m), 9s period, WNW swell with cross-offshore winds.
- Most powerful swell: Saturday 5 Sep, 5AM (local time) - 5.5ft (1.7m), 13s period, WNW swell with 928 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 8AM (local time) - 5ft (1.5m), 9s period with WNW swell.
Best Forecast Surf Conditions for Le Dossen this week:
The surf forecast for Le Dossen over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 01) at 8AM. The primary swell is predicted to be 1.5m and 9s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Le Dossen in the next 16 days are 1.7m 13s and forecast to arrive on Saturday (Sep 05) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Sep 02) at 11AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 1st Sep) | 5ft (1.5m) 9s |
| Best Surf | 8AM (Tue 1st Sep) | 5ft (1.5m) 9s |
| Most Powerful | 5AM (Sat 5th Sep) | 5.5ft (1.7m) 13s |
Table - best surf conditions forecast for Le Dossen over the next 16 days.
The Lowdown
Alright folks, Rusty here, and I’m looking at the 16-day forecast for our little corner of the coast. Gotta be straight with you – the next week and a half is a tough watch. The good news is, there’s some real promise right at the tail end, but we’ve got a long, flat spell to get through first.
From Monday afternoon (31st August) all the way through to the morning of Saturday the 5th of September, the conditions at Le Dossen are just plain rough. We’re getting cross-onshore and onshore winds, mostly from the west-northwest, with waves around 3 to 8 ft but it's all chop and junk. The combined wave energy is all over the shop, from weak to moderate (72-999), but with that wind, it’s not worth paddling out. Keep the board in the car.
Then we hit a proper gap. From Saturday the 5th of September morning through to the 11th, it’s a no-go zone. The surf is there, but either the wind is messy or the quality is so poor it’s a waste of time. You might see a clean window on the morning of Sunday the 6th with some light offshore SE winds and 3 ft swell (energy 150), but it’s barely a ripple.
The real standouts arrive around the 14th and 15th of September. This is where it gets interesting for the more experienced crew. On Monday the 14th of September, we start seeing some proper swell building. The Le Dossen morning has 7 ft from the west (energy 629), but it's a bit bumpy. The afternoon, though, picks up to 8 ft from the WNW with a 9-second period and a massive energy spike to 1035. That’s proper. It's onshore wind unfortunately, so it'll be a little lumpy, but there’s a lot of water moving.
However, the standout is Tuesday the 15th of September morning. The swell is 7 ft from the WNW with an 11-second period (energy 1141). The wind is a light cross-shore from the WSW. That combo means decent shape and lots of push. The afternoon could also be good with 7 ft from the WNW (energy 961) and light offshore NW winds turning it glassy. This is the best on offer, but at over 6 ft, this is for experienced surfers only – beginners stay out of the way. The water temp is sitting around 62°F, which is about normal for this time of year, so no surprises there.
Don't hold your breath for the first week. That Tuesday the 15th of September window is your target. Promising, but we’ll see how the details stack up closer to the time.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Wed afternoon, min 15°C on Tue morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Thu afternoon, min 15°C on Sat morning). Wind will be generally light. | |||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | W 7 | WNW 8 | W 8 | W 7 | WNW 8 | WNW 9 | WNW 8 | WNW 11 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | WNW 9 | WNW 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 999 | 664 | 260 | 169 | 90 | 67 | 88 | 232 | 146 | 130 | 192 | 258 | 252 | 615 | 759 | 636 | 352 | 125 | 59 | 31 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | on | cross | cross | cross | cross | cross | cross | cross | cross-on | on | cross-on | cross | cross | cross-off | off | cross-on | cross |
High Tide | 9:01PM7.32m | 9:19AM7.09m | 9:35PM7.11m | 9:55AM6.86m | 10:14PM6.75m | 10:36AM6.49m | 11:00PM6.25m | 11:26AM6.01m | 00:00AM5.69m | 12:37PM5.54m | 1:30AM5.27m | 2:18PM5.36m | 3:18AM5.29m | |||||||
Low Tide | 3:08PM0.17m | 3:28AM0.11m | 3:44PM0.32m | 4:04AM0.39m | 4:23PM0.63m | 4:45AM0.83m | 5:07PM1.08m | 5:32AM1.37m | 6:02PM1.59m | 6:34AM1.91m | 7:18PM2.03m | 8:02AM2.26m | 8:59PM2.09m | |||||||
 |  | | | | | | | | |  |  | | |  | | | | | | |
 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — | 7:37 | — | — | 7:39 | — | — |
 | — | 9:00 | — | 8:59 | — | — | 8:57 | — | — | 8:54 | — | — | 8:52 | — | — | 8:51 | — | — | 8:49 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 17 | 17 | 18 | 17 | 18 | 21 | 20 | 20 | 22 | 20 | 19 | 20 | 18 | 16 | 18 | 18 | 22 | 26 | 24 |
Feels °C | 14 | 16 | 16 | 16 | 15 | 16 | 17 | 17 | 18 | 20 | 18 | 19 | 19 | 18 | 15 | 16 | 14 | 20 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | W 15 | WNW 8 | W 8 | WNW 8 | WNW 8 | WNW 9 | WNW 12 | WNW 11 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | WNW 9 | WNW 9 |
| kJ | 999 | 664 | 260 | 169 | 90 | 67 | 4 | 232 | 146 | 44 | 192 | 258 | 90 | 615 | 759 | 636 | 352 | 125 | 59 | 31 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 16 | — | W 15 | W 15 | W 15 | — | — | — | NW 13 | — | — | — | W 9 | W 9 | W 9 |
| kJ | — | — | — | — | — | 5 | — | 4 | 4 | 4 | — | — | — | 63 | — | — | — | 25 | 26 | 24 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SW 3 | W 7 | — | — | W 7 | — | — | WNW 8 | — | — | — | — | E 3 | E 4 | SW 2 |
| kJ | — | — | — | — | — | 2 | 88 | — | — | 130 | — | — | 252 | — | — | — | — | 2 | 6 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 61 | 28 | 2 | 61 | 26 | 29 | 585 | 29 | 29 | 337 | 28 | 61 | 61 | 57 | 37 | 57 | 29 | 2 | 37 | 57 |
Best forecast wave conditions in Finistere - Brittany | ||||||||||||||||||||
Best forecast wave conditions in France | ||||||||||||||||||||
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Information about the Le Dossen Surf forecast
The above surf forecast table for Le Dossen provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Le Dossen can be found by selecting the local surf guide option on the grey menu. Our Le Dossen 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 (Le Dossen) 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 Le Dossen 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.
Le Dossen is 6 km (4 miles) from Roscoff. If you plan a holiday in Finistere - Brittany, look for hotels and other accommodation in Roscoff. Roscoff has rooms for a wide range of budgets as well as car hire and transport links.
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