Les Dunes Surf Break

Lat Long: 46.56° N 1.84° W

Les Dunes Surf Forecast and Surf Report

Issued: 1 pm 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Les Dunes sea temperature is
21.3° C
0.8° 

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 16 Aug 2026:

  • Best quality surf: Friday 21 Aug, 8AM (local time) - 3.5ft (1.1m), 9s period, WNW swell with cross-offshore winds.
  • Most powerful swell: Thursday 20 Aug, 5PM (local time) - 4.5ft (1.3m), 9s period, WNW swell with 280 kJ wave energy.
  • Next surfable swell (1★+): Monday 17 Aug, 2AM (local time) - 2.5ft (0.8m), 7s period with WNW 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 (Aug 17) at 2AM. The primary swell is predicted to be 0.8m and 7s period. 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 1.3m 9s and forecast to arrive on Thursday (Aug 20) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Sunday (Aug 23) at 8AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Mon 17th Aug)2.5ft (0.8m) 7s
Best Surf 8AM (Fri 21st Aug)3.5ft (1.1m) 9s
Most Powerful 5PM (Thu 20th Aug)4.5ft (1.3m) 9s

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


The Lowdown

Alright, surfers, Rusty here. Let's look at what's on the table for the coming weeks. I gotta be straight with you – the first half of this outlook is a bit of a write-off. We're looking at a long stretch of small, weak, and messy waves, so don't expect much action until we get into the final days of the month.

The only spot in the game is Les Dunes, which is a beginner-friendly beach break. The water temp is sitting at 70°, which is pretty normal for this time of year, so no surprises there. The combined swell energy is weak, mostly in the double digits (like 58) for the first week, so it's not going to have any punch.

From now through most of August, the surf is tiny. We're talking knee-high waves at best, with a lot of cross and cross-onshore winds messing things up. The swell is coming from the WNW and the period is short, under 8 seconds, so it's weak and junky. There's a long gap here where it's not really worth paddling out.

We finally get a glimmer of hope on the morning of Friday, the 28th of August. The swell ticks up a bit to 2 ft from the west, with a period of 8 seconds, and it's clean with a cross-off breeze. The combined energy is still low at 64, so it's not going to be epic, but it's the first surfable moment in a while.

Now, the real standout window is the morning of Saturday, the 29th of August. The swell bumps up to 4 ft from the west, and the wind goes glassy. That's a major positive – clean, smooth conditions. The combined energy jumps to 162, which is finally moderate. However, the forecast notes that the swell might be a bit too big for this break, so it could be a bit of a handful for the beginners that Les Dunes usually suits. If you're a more experienced surfer on a log or a mid-length, this could be a fun little session.

The morning of Monday, the 31st of August sees a similar setup: 5 ft of west swell with a clean cross-off wind. The energy is up to 206, and again, it's flagged as possibly too big for the spot. This is a promising end to the 16-day window, but it's far out, so keep an eye on the charts.

All in all, don't bother with the first two weeks. Save your energy for that last weekend in August, when we might finally see some proper waves at Les Dunes.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 24°C on Sun afternoon, min 17°C on Tue morning). Wind will be generally light.

Days 5-7 Weather Summary

Some drizzle, heaviest during Wed afternoon. Warm (max 20°C on Thu afternoon, min 13°C on Sat morning). Wind will be generally light.

Sun
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
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
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
WNW
7
0.8
WNW
7
0.7
NW
7
0.8
WNW
4
1.1
NW
6
0.4
WNW
8
0.5
WNW
7
0.7
WNW
4
0.3
W
8
0.3
W
7
0.5
W
10
0.9
WNW
9
1.3
WNW
9
1.3
WNW
9
1
WNW
9
0.9
WNW
9
0.5
WNW
8
0.5
WNW
8
0.3
W
11
0.4
W
10
Wave Graph
Metric surfscale
Energy kJ
43
61
46
18
69
20
27
15
10
10
49
149
280
271
181
146
41
34
21
31
Wind (km/h)
20
W
10
NNE
15
NNW
25
WNW
15
NNE
15
NW
20
WNW
15
WNW
15
NW
15
WNW
20
NW
20
W
25
W
20
NW
15
NW
25
WNW
10
NW
10
NNE
15
WNW
15
NE
Wind State
cross-on
cross-off
cross-off
cross-on
cross-off
cross
cross
cross
cross
cross-on
cross
cross-on
cross-on
cross
cross
cross-on
cross-off
off
cross-on
off
High Tide
8:00PM4.27m
8:17AM3.93m
8:32PM3.95m
8:47AM3.69m
9:03PM3.61m
9:19AM3.43m
9:39PM3.27m
10:00AM3.17m
10:32PM2.96m
11:17AM2.94m
00:57AM2.80m
1:45PM2.94m
2:34AM2.91m
Low Tide
2:13AM0.14m
2:29PM0.29m
2:53AM0.46m
3:11PM0.62m
3:34AM0.82m
3:57PM0.97m
4:20AM1.17m
4:50PM1.29m
5:17AM1.46m
5:57PM1.52m
6:29AM1.61m
7:17PM1.56m
clear
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
light rain
part cloud
cloud
clear
clear
clear
clear
part cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:07
7:07
7:09
7:11
7:11
7:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:15
9:14
9:13
9:10
9:08
9:07
9:06
 mm
1
Temp °C
24
22
21
24
21
19
20
20
19
19
19
19
20
19
18
18
18
17
20
20
Feels °C
23
21
18
20
18
18
18
20
18
18
17
16
16
16
16
14
14
15
18
17
  • 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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