Les Dunes Surf Break

Lat Long: 46.56° N 1.84° W

Les Dunes Surf Forecast and Surf Report

Issued: 1 am 07 Sep 2026 (local time)

Forecast update in  hr  min

Today's Les Dunes sea temperature is
20.9°C
1.3° 

Les Dunes surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Les Dunes surf forecast from 7 Sep 2026:

  • Best quality surf: Monday 7 Sep, 8PM (local time) - 4.5ft (1.4m), 13s period, W swell with cross-onshore winds.
  • Most powerful swell: Wednesday 9 Sep, 2AM (local time) - 7ft (2.2m), 9s period, WNW swell with 784 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 8PM (local time) - 4.5ft (1.4m), 13s period with W swell.

Best Forecast Surf Conditions for Les Dunes this week:

The surf forecast for Les Dunes over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 07) at 8PM. The primary swell is predicted to be 1.4m and 13s period. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Les Dunes in the next 16 days are 2.2m 9s and forecast to arrive on Wednesday (Sep 09) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Monday (Sep 14) at 2AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Mon 7th Sep)4.5ft (1.4m) 13s
Best Surf 8PM (Mon 7th Sep)4.5ft (1.4m) 13s
Most Powerful 2AM (Wed 9th Sep)7ft (2.2m) 9s

Table - best surf conditions forecast for Les Dunes over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let's check out what Les Dunes has cooking over the next couple of weeks. It’s a story of patience, but there are a couple of windows worth setting the alarm for.

The water temp is sitting around 69.6°, which is a touch warmer than usual for the season – a nice little bonus.

We’ve got a flat and messy start. Monday the 7th and Tuesday the 8th are total write-offs with strong onshore winds and poor, lumpy conditions. There's some wave energy (782), but it’s wasted with 22 mph winds. On Wednesday the 9th, the morning looks clean with a 4.2ft swell, period of 9 seconds, but the inside word says it’s simply too big for this break. After that, it’s back to tiny, poor waves right through the middle of the month.

The first real standout is Sunday the 13th. The morning session is the one to chase. We’ve got 3ft of long-period groundswell from the WNW with a period of 15 seconds, solid energy at 485. And the wind? Dead calm, glassy. This long-period stuff will offer better shape and more push, but at a beach break like Les Dunes, those long lulls between sets might make it feel a bit inconsistent. Still, for a sunrise session, that’s about as good as it gets.

The second standout is a long-range call, so keep a loose eye on it. Sunday the 20th shows a powerful 5.6ft swell from the WNW with a 13-second period – that’s strong, energetic groundswell (1405). But again, the forecast flags it as potentially too big for this spot, putting it in the expert-only zone. The wind will be a moderate cross-shore, so not the silky smooth conditions of the week before. It’s got serious potential, but it’s a big wave day for Les Dunes.

After that, there’s a clean-looking morning on the 21st with a 3.9ft swell and offshore winds, but energy levels are moderate and it’s another one that might be pushing the size limits for the spot. The rest of the run falls off into tiny, clean but weak waves.

Short story: if you can wait, the 13th is your morning. For the brave and experienced, the 20th could be a bomb, but it’s a long way off.

Stay safe out there.

Short Range Forecast

Some drizzle, heaviest during Tue afternoon. Warm (max 21°C on Mon morning, min 15°C on Tue night). Winds increasing (light winds from the WSW on Mon morning, fresh winds from the WSW by Tue afternoon).

Days 4-6 Weather Summary

Mostly dry. Warm (max 22°C on Sat afternoon, min 15°C on Thu morning). Wind will be generally light.

Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
!
!
0
1
0
0
0
0
0
1
1
0
1
2
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
WSW
15
1.4
W
13
1.3
W
12
1.5
W
11
2
W
7
2.2
WNW
9
1.3
W
9
1.2
W
9
0.8
WNW
9
0.5
WNW
9
0.5
W
8
0.4
W
8
0.3
W
10
0.8
W
10
0.8
W
8
0.7
W
7
0.6
W
7
0.7
W
10
0.9
WNW
15
0.9
WNW
14
0.6
WNW
9
Wave Graph
Metric surfscale
Energy kJ
360
683
472
535
364
784
269
230
90
46
30
20
19
120
84
54
37
98
370
336
62
Wind (km/h)
10
WSW
20
WSW
15
WSW
35
SW
35
NW
20
N
15
NNW
20
NW
10
NNW
5
SE
15
W
15
N
5
NW
20
NW
15
N
5
ENE
20
WNW
15
N
0
N
20
WNW
15
NNE
Wind State
on
on
on
on
cross
cross-off
cross-off
cross
cross-off
cross
cross-on
cross-off
glassy
cross
cross-off
glassy
cross
cross-off
glassy
cross
cross-off
High Tide
2:51PM3.63m
3:29AM3.62m
3:47PM4.00m
4:18AM3.93m
4:33PM4.32m
4:59AM4.17m
5:13PM4.54m
5:36AM4.32m
5:49PM4.63m
6:09AM4.37m
6:22PM4.58m
6:39AM4.33m
6:52PM4.43m
Low Tide
8:35PM0.80m
8:59AM0.79m
9:35PM0.44m
9:53AM0.43m
10:24PM0.11m
10:40AM0.12m
11:07PM-0.13m
11:22AM-0.09m
11:47PM-0.24m
12:02PM-0.18m
00:25AM-0.21m
12:40PM-0.13m
1:02AM-0.06m
cloud
part cloud
clear
part cloud
light rain
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:33
7:35
7:35
7:37
7:39
7:39
7:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:36
8:34
8:31
8:30
8:28
8:25
8:23
 mm
1
Temp °C
21
21
20
20
20
19
17
18
18
17
19
18
17
19
18
20
22
21
21
23
22
Feels °C
22
21
20
15
16
13
14
14
15
16
16
16
17
17
15
19
19
17
21
21
19
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Les Dunes Surf forecast

The above surf forecast table for Les Dunes provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Les Dunes can be found by selecting the local surf guide option on the grey menu. Our Les Dunes 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 (Les Dunes) 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 Les Dunes 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.

Les Dunes is 8 km (5 miles) from Les Sables-d'Olonne. If you plan a holiday in Vendee, look for hotels and other accommodation in Les Sables-d'Olonne. Les Sables-d'Olonne has rooms for a wide range of budgets as well as car hire and transport links.

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