Les Dunes Surf Break

Lat Long: 46.56° N 1.84° W

Les Dunes Surf Forecast and Surf Report

Issued: 7 am 24 Aug 2026 (local time)

Forecast update in  hr  min

Today's Les Dunes sea temperature is
20.6°C
0.3° 

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 24 Aug 2026:

  • Best quality surf: Wednesday 26 Aug, 11AM (local time) - 2.5ft (0.8m), 6s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Monday 31 Aug, 2PM (local time) - 6.5ft (2.0m), 9s period, W swell with 693 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 26 Aug, 11AM (local time) - 2.5ft (0.8m), 6s period with WSW 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 Wednesday (Aug 26) at 11AM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.3m 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 2.0m 9s and forecast to arrive on Monday (Aug 31) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Wednesday (Aug 26) at 5PM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Wed 26th Aug)2.5ft (0.8m) 6s
Best Surf11AM (Wed 26th Aug)2.5ft (0.8m) 6s
Most Powerful 2PM (Mon 31st Aug)6.5ft (2.0m) 9s

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


The Lowdown

Alright folks, Rusty here. Let's have a look at what's on the menu for Les Dunes over the next couple of weeks.

Right off the bat, I gotta be straight with you – the first week or so is looking pretty grim. We've got a long stretch of poor surf conditions and barely a ripple on offer. You're looking at days of small, choppy, or onshore junk until we get a couple of glimmers later on.

Monday the 24th and Tuesday the 25th are dead. Tiny 1.0ft to 1ft windswell with awful wind. Not worth paddling out for.

Wednesday the 26th morning shows a slight bump up to 3ft (WSW, 6 sec period) and the wind swings cross-offshore from the ESE. Clean lines, but the combined energy is weak (67). It's 'surfable but ordinary' – a log might be fun for a cruise, but don't expect any punch.

The first real standout shows up early Thursday the 27th morning. The wind goes glassy from the SW, and we get a 3ft swell from the W with moderate combined energy (104). For Les Dunes, a morning of glassy 3ft waves is as good as it's gonna get in the short term. The water's sitting around 69°, which is bang on average for this time of year. This is your best bet for a clean, fun session all week.

After that, things get messy again. Friday the 28th through Sunday the 30th sees onshore SW winds and rising swell (up to 7ft) but with short 6-7 second periods and choppy conditions. That's more of a washing machine than a surfable wave.

Monday the 31st keeps the W swell pumping (6ft–7ft, 10 sec period) but the cross-onshore wind keeps it messy. Combined energy is strong (568–661), so there's plenty of power, but the quality is poor for a paddle board.

Now, looking farther out, Tuesday the 1st of September morning is promising. The swell drops back to 4ft (W, 10 sec), but the wind switching to a light cross-offshore NNW means clean conditions. The catch? The forecast note says it might be a touch too big for this break. If you're an experienced local who knows how it handles, this could be a gem. Otherwise, it's a watch-and-see.

Then we hit another dry spell from Wednesday the 2nd through to Saturday the 5th. Tiny swell, onshore or cross-onshore winds.

The big wild card comes on Monday the 7th of September. A massive 10ft swell from the west with a very long 18 second period is forecast. Combined energy is huge (5969). That's a serious groundswell. However, the note again says it's predicted to be too big for Les Dunes. This is only for experts, and even then, a long-period 10ft+ swell on an exposed beach setup can be unpredictable and dangerous. The wind looks gentle cross-onshore, adding to the mess. Tuesday the 8th is still oversized at 6ft with a 14 sec period but cleaner winds. Again, a heavy set for confident surfers only.

All in all, the window is lean. Thursday morning the 27th is the clear winner for a clean, manageable surf. Keep an eye on the 1st of September morning for the next chance at something decent if the swell plays nice.

Rusty.

Short Range Forecast

Moderate rain (total 10mm), heaviest on Mon afternoon. Warm (max 26°C on Wed afternoon, min 19°C on Mon morning). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 13mm), heaviest on Thu night. Warm (max 20°C on Thu morning, min 18°C on Thu night). Winds increasing (calm on Thu morning, fresh winds from the WSW by Fri afternoon).

Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
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
1
0
0
0
0
0
0
0
0
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)
0.4
WSW
10
0.4
WSW
9
0.6
S
5
0.3
WSW
8
0.5
SW
5
0.7
SW
5
0.8
WSW
6
0.7
WSW
7
0.8
WSW
7
1
W
6
1.3
WSW
8
1.1
W
8
1.5
W
6
2
W
7
2.1
W
8
1.4
W
8
1.2
W
8
1.4
W
7
1.4
WSW
7
1.7
WSW
7
1.7
W
7
Wave Graph
Metric surfscale
Energy kJ
38
28
17
13
10
27
49
42
53
84
218
161
144
400
583
253
168
212
214
265
320
Wind (km/h)
15
SE
20
NNE
15
W
15
SW
25
SW
15
SSW
10
ESE
10
ESE
10
WSW
5
SW
10
SSW
10
WNW
25
WSW
30
WSW
25
W
20
WSW
25
WSW
20
SW
25
SSW
25
SW
25
WSW
Wind State
cross
cross-off
cross-on
on
on
on
cross-off
cross-off
on
glassy
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
on
on
on
on
High Tide
3:46PM3.39m
4:09AM3.37m
4:22PM3.67m
4:41AM3.60m
4:53PM3.92m
5:10AM3.82m
5:21PM4.14m
5:38AM3.99m
5:48PM4.31m
6:05AM4.13m
6:16PM4.41m
6:32AM4.20m
6:45PM4.42m
Low Tide
8:55AM1.33m
9:29PM1.12m
9:45AM1.04m
10:13PM0.81m
10:25AM0.73m
10:51PM0.52m
11:02AM0.46m
11:26PM0.27m
11:37AM0.24m
00:00AM0.09m
12:11PM0.10m
00:33AM-0.01m
12:46PM0.04m
1:08AM-0.01m
rain showers
thunderstorm
part cloud
clear
part cloud
part cloud
part cloud
light rain
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:16
7:16
7:18
7:20
7:20
7:22
7:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:01
9:00
8:58
8:57
8:54
8:52
8:51
 mm
1
7
2
2
3
5
1
1
1
Temp °C
21
25
23
21
22
21
21
26
26
20
20
20
20
20
19
19
20
20
20
21
21
Feels °C
19
24
22
21
21
21
21
25
26
21
18
20
16
15
15
18
17
18
19
19
20
  • 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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