Les Dunes Surf Break

Lat Long: 46.56° N 1.84° W

Les Dunes Surf Forecast and Surf Report

Issued: 1 am 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's Les Dunes sea temperature is
21.2° C
0.7° 

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 19 Aug 2026:

  • Best quality surf: Friday 21 Aug, 8AM (local time) - 5ft (1.5m), 10s period, WNW swell with cross-shore winds.
  • Most powerful swell: Wednesday 26 Aug, 8AM (local time) - 5ft (1.5m), 10s period, W swell with 440 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 8AM (local time) - 5ft (1.5m), 10s 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 Friday (Aug 21) at 8AM. The primary swell is predicted to be 1.5m and 10s period with a secondary swell of 1.2m and 10s. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Les Dunes in the next 16 days are 1.5m 10s and forecast to arrive on Wednesday (Aug 26) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 3s period and expected on Monday (Aug 24) at 8AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Fri 21st Aug)5ft (1.5m) 10s
Best Surf 8AM (Fri 21st Aug)5ft (1.5m) 10s
Most Powerful 8AM (Wed 26th Aug)5ft (1.5m) 10s

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


The Lowdown

Right then, let’s have a look at what’s on the cards for Les Dunes over the next couple of weeks.

Alright, to be straight with you, the first week or so is a real mixed bag – mostly on the small side and with a lot of cross-onshore wind messing things up. The water temp is sitting around 70°, which is pretty much bang on average for this time of year, so no surprises there.

The real standout, and honestly the only morning I’d be getting excited about in the first week, is Saturday morning, the 22nd of August. We’ve got a glassy morning with the wind swinging to barely a whisper out of the WNW, right at 3 mph. The swell is only 3 ft from the WNW with a period of 8 seconds, but combined with that glassy surface, it’s going to be as clean as a whistle. The wave energy is weak though, only 115, so it’s a small crumbler. It’s surfable, but ordinary. Crowds are possible here, so you might have a few mates out.

The rest of that first week is a write-off. Wednesday through Friday is all poor surf conditions, with the wind either onshore or cross-onshore, mostly from the W or WSW, and the swell is either too small or too messy. The energy is weak to moderate, but it’s all blown out.

Now, for the second week, things get a bit more interesting, but it’s a real case of “bigger isn’t always better.” The end of the month and into September sees a big pulse of swell, but it’s mostly too big for this spot. The weekend of the 29th-30th August is a write-off – strong winds, messy, lumpy.

The only real potential for a wave comes on Monday the 31st of August. The morning shows a solid 8 ft of swell from the W with a period of 8 seconds, and the wind is a cross-shore NW breeze at 16 mph. The combined energy is strong at 747. The data says the wind and tide are favorable, but the swell is predicted to be too big for this break. That’s a tough call. For a beginner spot, 8 ft is expert territory, and it’s likely to be a washing machine. Not for the faint-hearted.

Also, on Tuesday the 1st of September, we have a similar situation. The afternoon shows a 7 ft W swell with a period of 11 seconds, and a cross-shore WNW breeze. The energy is very strong at 1049. Again, the wind and tide are favorable, but the swell is just too big. If you’re a seasoned charger, it might be worth a look, but this isn’t the break for a fun, clean session.

Honestly, for the majority of this 16-day window, it’s either going to be too small and onshore, or too big and messy. The only real bright spot is that Saturday morning 22nd August for a small, clean wave. It’s not a classic, but it’s the best on offer.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Fri morning. Warm (max 22°C on Wed afternoon, min 17°C on Fri morning). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Mon afternoon. Warm (max 23°C on Sun afternoon, min 17°C on Sat morning). Winds increasing (calm on Sat morning, fresh winds from the WSW by Mon night).

Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
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
0
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)
0.3
W
8
0.9
W
4
1.3
WNW
6
1.3
WNW
8
1.1
W
9
1.2
WNW
9
1.1
WNW
10
1.4
WNW
10
1.1
WNW
9
0.9
WNW
8
1.1
WNW
8
0.4
W
9
0.6
NW
7
0.3
W
9
0.7
W
5
0.2
W
9
0.2
W
9
0.2
W
9
0.5
W
6
0.2
W
8
0.3
WNW
10
Wave Graph
Metric surfscale
Energy kJ
10
29
117
223
199
265
230
358
197
115
146
26
27
13
27
6
6
6
16
5
20
Wind (km/h)
20
WSW
30
WSW
20
WNW
20
W
20
W
15
WNW
15
NW
25
WNW
15
WNW
5
WNW
15
W
20
NE
30
ENE
15
ESE
20
NNE
25
ESE
20
WSW
35
WSW
20
NW
20
W
15
S
Wind State
on
cross-on
cross
cross-on
cross-on
cross-on
cross
cross-on
cross
glassy
cross-on
off
off
cross-off
off
cross-off
on
cross-on
cross
cross-on
cross-on
High Tide
9:19AM3.43m
9:39PM3.27m
10:00AM3.17m
10:32PM2.96m
11:17AM2.94m
00:57AM2.80m
1:45PM2.94m
2:34AM2.91m
2:58PM3.13m
3:30AM3.12m
3:46PM3.39m
4:09AM3.37m
4:22PM3.67m
4:41AM3.60m
Low Tide
3:57PM0.97m
4:20AM1.17m
4:50PM1.29m
5:17AM1.46m
5:57PM1.52m
6:29AM1.61m
7:17PM1.56m
7:49AM1.56m
8:32PM1.40m
8:55AM1.33m
9:29PM1.12m
9:45AM1.04m
10:13PM0.81m
clear
clear
part cloud
cloud
cloud
part cloud
rain showers
clear
clear
clear
clear
part cloud
cloud
cloud
cloud
part cloud
thunderstorm
rain showers
rain showers
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:09
7:11
7:11
7:13
7:13
7:16
7:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:10
9:08
9:07
9:06
9:04
9:01
9:00
 mm
1
2
2
1
Temp °C
21
22
20
20
20
19
18
19
19
18
18
19
18
23
21
18
20
18
17
19
19
Feels °C
20
20
18
17
17
16
16
16
15
18
16
17
12
16
19
13
18
13
15
16
17
  • 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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