Les Dunes Surf Break

Lat Long: 46.56° N 1.84° W

Les Dunes Surf Forecast and Surf Report

Issued: 1 pm 30 Aug 2026 (local time)

Forecast update in  hr  min

Today's Les Dunes sea temperature is
20.4°C
0.4° 

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 30 Aug 2026:

  • Best quality surf: Monday 31 Aug, 8PM (local time) - 5ft (1.6m), 10s period, W swell with cross-shore winds.
  • Most powerful swell: Monday 31 Aug, 11AM (local time) - 7.5ft (2.3m), 10s period, W swell with 1,004 kJ wave energy.
  • Next surfable swell (1★+): Monday 31 Aug, 8PM (local time) - 5ft (1.6m), 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 (Aug 31) at 8PM. The primary swell is predicted to be 1.6m and 10s period. 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 2.3m 10s and forecast to arrive on Monday (Aug 31) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Sep 04) at 8PM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Mon 31st Aug)5ft (1.6m) 10s
Best Surf 8PM (Mon 31st Aug)5ft (1.6m) 10s
Most Powerful11AM (Mon 31st Aug)7.5ft (2.3m) 10s

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 offer at Les Dunes for the next couple of weeks.

Honestly, it’s a pretty lean outlook. The first few days are a washout, with poor conditions and onshore winds. We’re looking at Sunday the 30th and Monday the 31st of August – the surf is there, but it’s messy, with a strong westerly wind blowing and cross-onshore chop. Swell is around 4ft to 6ft, but it’s just not clean. Not worth paddling out for.

The first real chance of a decent wave comes on Tuesday the 1st of September. The swell drops to a manageable 4ft from the west with a period of 9 seconds, and the morning brings a light offshore breeze from the ENE. The water temp is 69°, which is about average for this time of year. The wind will be clean, and the wave energy is moderate at 235. The swell is a little small for this spot, and the tide/wind window is narrow, but it’s the first time the surf will actually look like a wave and not a washing machine. Still, it’s not a standout.

The real standout, and the one to circle on the calendar, is Friday the 4th of September. The afternoon sees a solid pulse of 5ft swell from the WNW with a long period of 12 seconds. That’s a groundswell, and it’s packing a lot of energy – 1177, which is strong. The wind is cross-shore at 12 mph, so it’ll be a bit chunky, but the wave quality will be there. This is only for experienced surfers – 5ft is pushing it for beginners, and the cross-shore wind will make it tricky. It’s a one-off, so if you’re keen, be ready.

The Saturday morning the 5th follows up nicely with a 4ft WNW swell, also 12 seconds, and a clean offshore wind from the NE. The energy is moderate at 397, and the crowd at Les Dunes is only sometimes an issue, so you might have it pretty good. This is another one for the better surfers, but it’s a quality morning.

After that, it fades fast. The rest of the forecast is a mix of tiny, weak swell and poor winds. There’s a long gap from the 6th of September through to the 12th where the surf is either too small or too messy to bother with. The 12th of September shows a little pulse of 1ft to 2ft from the west with a very long 12-second period, but it’s just too small. The 13th is similar – ordinary conditions.

So, to sum it up: the first week is a write-off. The best bet is the Friday the 4th afternoon and Saturday the 5th morning. That’s your window. After that, it’s a waiting game. It’s a pretty poor run for the area, but it’s not unusual for this time of year.

Stay salty.
Rusty.

Short Range Forecast

Mostly dry. Warm (max 20°C on Sun afternoon, min 15°C on Tue morning). Winds decreasing (fresh winds from the WSW on Sun night, calm by Mon night).

Days 5-7 Weather Summary

Mostly dry. Warm (max 22°C on Fri afternoon, min 17°C on Wed night). Wind will be generally light.

Sun
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
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
0
0
1
2
0
0
0
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)
1.4
W
8
1.9
W
8
2.3
W
10
1.7
W
10
1.4
W
10
1.1
W
10
0.9
W
9
0.6
W
9
0.6
WNW
8
0.5
W
8
0.4
WNW
8
0.6
WNW
9
0.7
WNW
8
0.7
WNW
8
0.9
WNW
13
1
W
12
1
W
11
1
W
11
0.9
WNW
11
0.9
WNW
10
Wave Graph
Metric surfscale
Energy kJ
277
413
1004
567
379
235
136
57
53
33
19
59
72
67
277
279
251
247
194
167
Wind (km/h)
30
WSW
30
W
25
W
20
WNW
15
NW
10
ENE
15
WNW
15
NNW
10
NW
20
WNW
15
NNW
5
N
15
NW
15
N
10
NNW
20
WNW
15
WNW
15
W
20
WNW
15
NNE
Wind State
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-on
cross-off
cross
cross
cross-off
glassy
cross
cross-off
cross-off
cross
cross
cross-on
cross
off
High Tide
6:45PM4.42m
7:01AM4.21m
7:15PM4.35m
7:32AM4.14m
7:48PM4.18m
8:07AM3.99m
8:27PM3.93m
8:47AM3.76m
9:14PM3.61m
9:40AM3.48m
10:23PM3.26m
11:13AM3.24m
00:45AM3.11m
Low Tide
1:08AM-0.01m
1:22PM0.07m
1:45AM0.09m
2:01PM0.20m
2:24AM0.29m
2:44PM0.41m
3:09AM0.57m
3:34PM0.69m
4:02AM0.89m
4:35PM0.96m
5:09AM1.16m
5:52PM1.13m
part cloud
clear
part cloud
clear
clear
cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:24
7:26
7:26
7:28
7:30
7:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:51
8:49
8:46
8:45
8:43
8:40
8:39
 mm
Temp °C
20
19
19
20
18
16
19
18
17
19
18
19
21
21
21
22
20
21
22
21
Feels °C
17
16
16
17
16
15
18
15
17
16
16
19
20
19
20
19
20
21
22
20
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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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