Les Dunes Surf Break

Lat Long: 46.56° N 1.84° W

Les Dunes Surf Forecast and Surf Report

Issued: 7 pm 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's Les Dunes sea temperature is
20.9°C
1.7° 

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 14 Sep 2026:

  • Best quality surf: Tuesday 15 Sep, 11PM (local time) - 4.5ft (1.3m), 5s period, NW swell with cross-offshore winds.
  • Most powerful swell: Friday 18 Sep, 5PM (local time) - 4.5ft (1.4m), 16s period, WNW swell with 991 kJ wave energy.
  • Next surfable swell (1★+): Monday 14 Sep, 5AM (local time) - 2.5ft (0.8m), 10s 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 14) at 5AM. The primary swell is predicted to be 0.8m and 10s period with a secondary swell of 0.2m and 2s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Les Dunes in the next 16 days are 1.4m 16s and forecast to arrive on Friday (Sep 18) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Sep 20) at 11PM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Mon 14th Sep)2.5ft (0.8m) 10s
Best Surf11PM (Tue 15th Sep)4.5ft (1.3m) 5s
Most Powerful 5PM (Fri 18th Sep)4.5ft (1.4m) 16s

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


The Lowdown

Alright, Rusty here. Let's talk about the next couple of weeks at Les Dunes.

Honestly, the next few days are a bit of a struggle. We've got a lot of small, weak swell with poor wind, making it hard to get excited. There are a few windows of opportunity, but nothing to write home about until later.

The standout session in the entire forecast is Monday the 21st. We've got clean, glassy conditions in the morning with a light offshore breeze. The swell is a clean 3 ft from the West with a long 14-second period, giving it real energy (429 combined energy). This will be the best the break looks all period. It's a fairly consistent spot, so you can expect some fun ones. The water temp is about average for this time of year.

Before that, there are a few other moments. Friday morning the 18th looks interesting on paper, with a 4 ft swell and clean cross-off wind, but the energy is a very strong 381, and the forecast warns it might actually be too big for this beginner-friendly break. Same for Friday afternoon when a massive 5 ft groundswell with a 16-second period and 991 combined energy rolls in – that's expert territory only, and it's breaking too straight for the beach setup.

The rest of the first week is pretty bleak. Small swells under 3 ft, cross or onshore winds, and weak energy. Tuesday the 22nd morning has a little 2 ft swell with offshore wind, but it's tiny and not worth paddling out for.

After the 21st, the surf dries up fast. From Wednesday the 23rd all the way through to Sunday the 29th, the swell drops to 1.0 ft - 2 ft. The wind is clean and offshore, but there's barely any wave energy (values from 23 to 82 combined energy). It's just not doing anything. That's a solid week of flatness. The last glimmer is Sunday afternoon the 27th, with 1 ft from the West, but again, not enough to get wet for.

So the play is clear: if you can, get out on Monday morning the 21st. That's the one. The rest is a waiting game.

- Rusty

Short Range Forecast

Mostly dry. Warm (max 25°C on Mon afternoon, min 14°C on Tue night). Winds increasing (calm on Mon morning, fresh winds from the NW by Tue night).

Days 5-7 Weather Summary

Some drizzle, heaviest during Thu night. Very mild (max 19°C on Sat afternoon, min 13°C on Wed night). Wind will be generally light.

Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
1
0
0
0
1
0
!
1
0
0
!
!
!
1
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)
0.8
W
10
0.7
W
10
0.7
W
10
0.6
W
9
0.6
W
9
0.9
WNW
8
1.3
WNW
6
1
WNW
10
1.1
WNW
10
1.4
WNW
10
1
W
11
0.8
WNW
10
1.3
WNW
6
1.2
WNW
9
1.4
WNW
16
1.2
WNW
14
0.9
WNW
13
0.8
WNW
12
0.7
WNW
11
Wave Graph
Metric surfscale
Energy kJ
138
96
88
59
54
111
128
197
245
400
229
133
115
254
991
613
269
189
123
Wind (km/h)
15
N
5
ESE
15
W
10
N
20
NW
30
NW
20
N
15
NNW
25
NW
20
NNE
10
WSW
20
W
20
NNW
15
NNW
20
WNW
15
NW
10
WSW
15
W
10
N
Wind State
cross-off
glassy
cross-on
cross-off
cross
cross
cross-off
cross-off
cross
cross-off
on
cross-on
cross-off
cross-off
cross
cross
cross-on
cross-on
cross-off
High Tide
7:06AM4.21m
7:20PM4.19m
7:31AM4.03m
7:46PM3.90m
7:56AM3.80m
8:12PM3.59m
8:24AM3.53m
8:43PM3.27m
9:00AM3.24m
9:25PM2.95m
9:55AM2.95m
11:15PM2.69m
Low Tide
1:02AM-0.06m
1:18PM0.03m
1:38AM0.20m
1:56PM0.30m
2:15AM0.52m
2:35PM0.63m
2:54AM0.88m
3:18PM0.99m
3:38AM1.24m
4:10PM1.33m
4:34AM1.53m
5:17PM1.58m
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
rain showers
part cloud
clear
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:43
7:43
7:45
7:46
7:48
7:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:23
8:22
8:20
8:17
8:15
8:14
8:12
 mm
1
Temp °C
21
22
25
25
21
21
19
16
18
18
16
18
18
16
17
17
18
19
18
Feels °C
18
21
22
21
20
17
15
14
14
14
14
14
15
13
13
14
17
18
18
  • 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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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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