Les Dunes Surf Break

Lat Long: 46.56° N 1.84° W

Les Dunes Surf Forecast and Surf Report

Issued: 1 pm 14 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: Wednesday 16 Sep, 8AM (local time) - 4ft (1.2m), 8s period, WNW swell with cross-offshore winds.
  • Most powerful swell: Friday 18 Sep, 5PM (local time) - 4.5ft (1.4m), 16s period, W swell with 991 kJ wave energy.
  • Next surfable swell (1★+): Monday 14 Sep, 11PM (local time) - 2ft (0.6m), 9s 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 11PM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.4m and 10s. The wind is predicted to be cross-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 0.6m 4s period and expected on Wednesday (Sep 16) at 2AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Mon 14th Sep)2ft (0.6m) 9s
Best Surf 8AM (Wed 16th Sep)4ft (1.2m) 8s
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, let’s get into it. This is a tricky stretch for Les Dunes, no two ways about it. We’re looking at a 16-day window that starts off pretty flat and stays mostly quiet, but there’s a couple of moments where it could light up—if you’re willing to wait and pick your windows carefully.

Right off the bat, the water’s sitting at about 70°, which is a touch warmer than normal for this time of year. Not a big deal, but it’s a little treat.

The first few days, Monday the 14th and Tuesday the 15th, are basically a write-off. Small, cross-onshore slop—nothing worth paddling out for. That wind’s mussing everything up. Then Wednesday the 16th morning shows a tiny bit of life: a clean 3ft from the WNW with a 10-second period, and the energy starts to build a little (201). That’s the first real chance, but it’s small and the afternoon gets lumpy again. Not great, but a morning paddle might give you a few fun ones if you’re a beginner or just keen for a splash.

Thursday the 17th is back to poor—cross-onshore and choppy. Friday the 18th morning cleans up with a cross-offshore breeze, and the swell’s still around 4ft. But the afternoon is where things get interesting. The swell jumps to 5ft from the W with a long 16-second period, and the overall energy is strong—like, proper strong, 991 in the bracket. That’s the biggest pulse of the whole window. However, here’s the catch: the notes say this is *too big* for Les Dunes. It’s a beginner spot, remember, and 5ft might be pushing it, but with that long period, it’s going to be walled-up and powerful. Honestly, unless you’re real comfortable in overhead surf, this one’s best watched from the sand. The wind’s cross-shore too, so it’s not going to be clean. This is the standout for size, but not necessarily for quality.

Then we get a breather. Saturday the 19th morning is glassy—like, dead calm—and a clean 3ft from the WNW. That’s a nice little window. The energy’s moderate (265), period’s 13 seconds, so there’s some push. For a beginner, this is probably your best bet of the whole 16 days: small, glassy, clean, and you won’t be fighting for waves. Just a touch of crowd possible, but nothing hectic. Sunday the 20th and Monday the 21st stay rideable but ordinary—small, clean-ish, with a bit of offshore flow here and there. Monday afternoon the 21st actually looks decent: 3ft, clean, offshore-ish breeze, and good energy for the size (229). That’s another sneaky good one.

After that, it drops off. Tuesday the 22nd through Thursday the 24th are tiny—1ft to 2ft—and mostly poor. Friday the 25th morning has a little pulse (3ft, clean offshore), but it’s pretty ordinary. Then it fades fast. The last weekend, the 27th and 28th, is basically flat—0.7ft to 1ft, clean but nothing to ride. Even Monday the 29th, with a fresh offshore breeze, only has 0.7ft to 1ft of swell. That’s knee-high dribble at best.

So here’s the bottom line: in the first week, keep your eyes on Wednesday morning the 16th and Saturday morning the 19th. Those are clean, manageable, and fun for the level of the break. The 18th afternoon is the big one, but it’s likely too much for this spot—leave it for the experts or the kite crew if the wind’s howling. Second week is mostly a bust—there’s a few clean little micro-sessions around the 21st and 25th mornings, but nothing worth planning around. If you’re a beginner, the 19th is your day. If you’re just after a paddle and a few grovel waves, look at the 21st. Otherwise, this stretch is a whole lot of waiting for not much.

Rusty out.

Short Range Forecast

Mostly dry. Warm (max 25°C on Mon afternoon, min 13°C on Wed night). Winds increasing (light winds from the NNE on Mon night, fresh winds from the NW by Tue night).

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Thu night. Very mild (max 19°C on Sat night, min 14°C on Thu night). Wind will be generally light.

Mon
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
0
0
0
2
0
!
0
0
0
!
!
!
2
0
0
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
W
10
0.6
W
9
0.6
W
9
0.9
WNW
8
1
WNW
6
1
WNW
10
1.3
WNW
10
1.4
WNW
10
1
W
11
0.9
WNW
10
0.6
W
10
1.1
WNW
9
1.4
W
16
1.2
W
14
0.9
WNW
13
0.8
WNW
12
0.7
WNW
11
0.7
WNW
10
0.7
WNW
10
0.5
W
13
Wave Graph
Metric surfscale
Energy kJ
88
59
54
111
85
201
295
385
229
167
68
211
991
602
265
192
126
110
108
89
Wind (km/h)
15
WNW
10
NNE
15
NW
30
WNW
20
N
15
NNW
25
WNW
15
NNE
10
WSW
20
W
20
NNW
15
NNW
20
WNW
10
NNW
0
SSW
15
WNW
15
N
15
NE
15
N
20
NE
Wind State
cross-on
cross-off
cross
cross
cross-off
cross-off
cross
cross-off
cross-on
cross-on
cross-off
cross-off
cross
cross-off
glassy
cross
cross-off
off
cross-off
off
High Tide
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
1:07PM2.85m
2:07AM2.81m
Low Tide
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
5:49AM1.70m
6:42PM1.63m
clear
clear
clear
clear
part cloud
clear
clear
clear
cloud
part cloud
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:43
7:45
7:46
7:48
7:48
7:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:22
8:20
8:17
8:15
8:14
8:12
8:09
 mm
3
Temp °C
25
25
21
21
20
16
18
18
16
18
18
15
17
17
17
18
19
19
26
27
Feels °C
22
22
20
16
16
14
14
15
14
14
16
12
13
13
18
17
17
17
23
23
  • 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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