Surf Forecasts:
La Tranche sur Mer surf forecast from 22 Aug 2026:
- Best quality surf: Friday 28 Aug, 11PM (local time) - 6ft (1.9m), 9s period, WSW swell with cross-offshore winds.
- Most powerful swell: Saturday 29 Aug, 2AM (local time) - 6ft (1.9m), 10s period, WSW swell with 644 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 8PM (local time) - 2ft (0.6m), 8s period with W swell.
Best Forecast Surf Conditions for La Tranche sur Mer this week:
The surf forecast for La Tranche sur Mer over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 22) at 8PM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.2m and 8s. Another secondary swell of 0.1m and 10s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at La Tranche sur Mer in the next 16 days are 1.9m 10s and forecast to arrive on Saturday (Aug 29) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Friday (Aug 28) at 2PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 22nd Aug) | 2ft (0.6m) 8s |
| Best Surf | 11PM (Fri 28th Aug) | 6ft (1.9m) 9s |
| Most Powerful | 2AM (Sat 29th Aug) | 6ft (1.9m) 10s |
Table - best surf conditions forecast for La Tranche sur Mer over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s on the cards for the local stretch.
First up, the water’s sitting at a touch warmer than normal for the time of year, so that’s a nice little bonus.
Right now, and for the next several days, it’s a bit of a flat spell. From Friday 21st right through to the morning of Thursday 27th, the surf is poor. There’s just no energy to speak of, with combined wave energy stuck in the weak range (values between 14 and 151). The swell is small, the wind is messy, and it’s all cross-onshore or cross-off, so nothing worth getting wet for. That’s a solid six-day gap with no real recommendations.
Finally, on Thursday 27th afternoon, things start to wake up. La Tranche sur Mer (France) will see a pulse of 5ft swell from the WSW, with a period of 8 seconds. The combined energy jumps to 246 (moderate), and we get a clean cross-off breeze. The surf is still rated poor though, so it’s not a standout.
The real standout is Friday 28th afternoon. A solid 8ft swell from the WSW, with a period of 8 seconds, and the combined energy is strong at 685. The wind is a clean cross-off, and the wave comment says wind and tide are favorable. However, this is a beginner-friendly beach/jetty break, and at 8ft, it’s pushing into expert territory. The setup looks more interesting for kite surfing than paddle surfing for most folks. But for the experienced crew, that’s the best session on offer.
After that, Saturday 29th stays good with 4ft to 6ft swell and clean cross-off winds, but it’s still noted as too big for this break. Then we drop back into smaller, less clean conditions for the rest of the period.
There’s another pulse on Thursday 3rd September with 7ft to 7ft swell from the WSW, period 9 seconds, and very strong energy (651 to 724). The wind goes glassy on Thursday afternoon. Again, too big for this spot, but if you’re an expert, keep an eye on that one. It’s a promising call, but long-range, so less certain.
So, bottom line: the best on offer is the afternoon of Friday 28th August for the experts, with a clean 8ft swell. Beginners should sit this one out.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Mon afternoon. Warm (max 30°C on Sun afternoon, min 15°C on Sat morning). Winds increasing (light winds from the E on Sat afternoon, fresh winds from the ENE by Sun night). | Days 5-7 Weather SummaryModerate rain (total 16mm), heaviest on Thu afternoon. Warm (max 23°C on Mon night, min 17°C on Thu morning). Winds increasing (light winds from the SSW on Wed afternoon, fresh winds from the W by Thu afternoon). | ||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | W 9 | W 9 | W 8 | W 9 | ENE 4 | WSW 13 | WSW 11 | SW 10 | WSW 9 | WSW 9 | WSW 8 | W 11 | WSW 8 | WSW 8 | WSW 7 | W 6 | W 8 | WSW 8 | WSW 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 80 | 53 | 33 | 16 | 14 | 17 | 39 | 24 | 17 | 15 | 7 | 2 | 135 | 81 | 37 | 20 | 46 | 280 | 169 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | cross-off | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-off | cross | cross-on | on | cross-off | off | cross | cross-off | cross |
High Tide | 1:43AM2.92m | 2:15PM3.08m | 2:54AM3.07m | 3:15PM3.29m | 3:43AM3.29m | 3:59PM3.55m | 4:22AM3.53m | 4:33PM3.82m | 4:53AM3.75m | 5:02PM4.06m | 5:20AM3.94m | 5:28PM4.27m | |||||||
Low Tide | 6:30AM1.64m | 7:14PM1.59m | 7:46AM1.60m | 8:29PM1.44m | 8:54AM1.38m | 9:28PM1.15m | 9:46AM1.06m | 10:14PM0.82m | 10:28AM0.73m | 10:53PM0.50m | 11:06AM0.43m | 11:29PM0.22m | |||||||
 |  |  |  | | | |  |  | | | | | | |  |  | |  | |
 | — | 7:11 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — |
 | 9:06 | — | — | 9:04 | — | — | 9:01 | — | — | 9:00 | — | 8:58 | — | — | 8:57 | — | — | 8:54 | — |
mm | — | — | — | — | — | — | — | 2 | 5 | — | 1 | — | — | — | 1 | 3 | 5 | 6 | 3 |
Temp °C | 19 | 17 | 23 | 24 | 20 | 30 | 30 | 21 | 26 | 23 | 23 | 23 | 21 | 20 | 23 | 21 | 19 | 19 | 19 |
Feels °C | 16 | 15 | 21 | 19 | 13 | 25 | 24 | 17 | 26 | 22 | 23 | 21 | 19 | 20 | 23 | 20 | 15 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | W 8 | W 8 | W 9 | WSW 13 | WSW 11 | SW 10 | WSW 9 | WSW 9 | WSW 8 | W 11 | WSW 8 | WSW 8 | WSW 7 | W 6 | W 8 | — | WSW 8 |
| kJ | 80 | 53 | 33 | 13 | 6 | 17 | 39 | 24 | 17 | 15 | 7 | 2 | 135 | 81 | 37 | 20 | 46 | — | 169 |
Swell 2 Height (m) Direction Period (s) | W 4 | W 11 | — | WNW 4 | W 16 | W 8 | NW 7 | S 5 | — | — | W 12 | W 8 | — | W 10 | W 9 | W 9 | — | — | — |
| kJ | 2 | 2 | — | 3 | 5 | 6 | 2 | 1 | — | — | 3 | 1 | — | 8 | 6 | 6 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 9 | W 16 | NW 7 | — | W 7 | — | — | W 12 | W 8 | — | — | — | — | — | — | — |
| kJ | — | — | — | 16 | 5 | 2 | — | 1 | — | — | 3 | 1 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 4 | — | — | ENE 3 | ENE 4 | E 3 | E 3 | SE 4 | S 4 | SW 3 | SSW 4 | WSW 3 | S 5 | — | — | W 6 | WSW 4 | WSW 8 | — |
| kJ | 4 | — | — | 3 | 14 | 5 | 8 | 3 | 9 | 3 | 5 | 8 | 4 | — | — | 7 | 11 | 280 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 1 | 16 | 120 | 203 | 181 | 96 | 505 | 292 | 188 | 181 | 294 | 10 | 1 | 294 | 16 | 263 | 468 | 260 |
Best forecast wave conditions in Vendee | |||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the La Tranche sur Mer Surf forecast
The above surf forecast table for La Tranche sur Mer provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at La Tranche sur Mer can be found by selecting the local surf guide option on the grey menu. Our La Tranche sur Mer 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 (La Tranche sur Mer) 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 La Tranche sur Mer 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.
Are you planning a holiday in Vendee? If you are looking for accommodation near La Tranche sur Mer, camping, hotels and holiday cottages in Vendee, consider staying in La Pallice which is 29 km (18 miles) away. Other places in and around Vendee where you can find information about places to rent, and car hire include Les Sables-d'Olonne which is 30 km (19 miles) away, La Rochelle, La Roche-sur-Yon and Marans.
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