
Surf Forecasts:
La Tranche sur Mer surf forecast from 31 Jul 2026:
- Best quality surf: Saturday 1 Aug, 5PM (local time) - 2.5ft (0.7m), 10s period, WNW swell with offshore winds.
- Most powerful swell: Saturday 1 Aug, 5PM (local time) - 2.5ft (0.7m), 10s period, WNW swell with 86 kJ wave energy.
- Next surfable swell (1★+): Saturday 1 Aug, 5PM (local time) - 2.5ft (0.7m), 10s period with WNW 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 01) at 5PM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.3m and 10s. 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 0.7m 10s and forecast to arrive on Saturday (Aug 01) at 5PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Friday (Jul 31) at 8PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Sat 1st Aug) | 2.5ft (0.7m) 10s |
| Best Surf | 5PM (Sat 1st Aug) | 2.5ft (0.7m) 10s |
| Most Powerful | 5PM (Sat 1st Aug) | 2.5ft (0.7m) 10s |
Table - best surf conditions forecast for La Tranche sur Mer over the next 16 days.
The Lowdown
Well folks, it’s Rusty here, and I gotta be straight with you: this 16-day stretch for La Tranche sur Mer is looking about as flat as a summer pond. We’ve got a whole lot of nothing on the horizon, and I mean that in the most surfing sense possible. The swell window is essentially shut, and we’re going to be staring at a lot of knee-high slop and closeouts, if we're lucky enough to see even that.
The water temp is sitting at a normal 69°F, right where it should be for this time of year, so at least you won't need a full suit just to paddle around and complain.
Looking at the first week, it's grim. From Friday the 31st right through to Thursday the 6th, we’re locked in a pattern of tiny, weak swells. The energy readings are almost all in the single digits or teens, which is about as weak as it gets (6, 18, 58 – it's all pathetic). Friday morning has a sliver of 0.7ft, but that’s a ripple, not a wave. Saturday the 1st does bump up to 2ft with a 10-second period, and the wind is offshore, so it’ll be clean, but it’s just so weak. That’s your “best” of the first week, and it’s not saying much. The whole week is just a series of small, gutless waves with a few pockets of clean conditions. There’s one morning, Tuesday the 4th, with a 3 mph breeze making it glassy, but there’s still no swell to push it. You'd have more fun body-surfing in a bathtub.
The weekend of the 9th and 10th sees a slight bump, with Sunday the 9th afternoon pushing 3ft from the W with a 9-second period. The energy is up to 95, which is still weak, but it's the most we've seen. It's offshore and clean, but it's still small. Then it drops right back down again for the following week.
From the 10th through the 15th, it's the same story. Diminutive waves, with everything struggling to get over 2ft and periods under 9 seconds. There’s a glassy morning on the 13th with light winds, but again, the swell is just a whisper. We're talking a long stretch of nothing here. There's a gap of several days in the middle where there's no point even getting your board wet.
Honestly, there are no standouts in this entire window. I’m not going to sugarcoat it. The long-range stuff around the 15th is still just 2ft at 7 seconds. This La Tranche sur Mer spot is just not going to fire. If you’re desperate, the small clean windows on the 1st and the 9th/13th afternoons are your only real chances to paddle out, but even then, you'll be fighting for a closeout on a beach break. With winds kicking up to 19-22 mph, it might honestly be more interesting for the kite surfers than us paddle surfers.
The good news? These dead-flat spells don't usually last forever around here. The North Atlantic is fickle, and a forecast like this can shift overnight. Keep your board waxed and your eyes on the horizon. Things will turn around eventually.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Sun afternoon, min 16°C on Fri night). Winds decreasing (fresh winds from the NW on Fri night, light winds from the W by Sun afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Tue afternoon, min 19°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||||
AM | PM | 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 8 | WNW 4 | WNW 5 | W 9 | WNW 10 | WSW 9 | WSW 8 | W 8 | W 10 | WSW 10 | WSW 8 | WSW 9 | W 8 | W 8 | W 7 | W 8 | W 8 | W 7 | W 7 | W 7 | W 7 |
Wave Graph | |||||||||||||||||||||
6 | 0 | 21 | 7 | 86 | 16 | 14 | 36 | 8 | 31 | 13 | 26 | 34 | 47 | 28 | 29 | 44 | 25 | 26 | 46 | 8 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | off | cross-off | cross-off |
High Tide | 6:41PM4.28m | 6:55AM4.01m | 7:05PM4.30m | 7:20AM4.02m | 7:32PM4.27m | 7:48AM3.99m | 8:03PM4.18m | 8:22AM3.91m | 8:39PM4.02m | 9:02AM3.77m | 9:25PM3.80m | 9:53AM3.59m | 10:25PM3.53m | ||||||||
Low Tide | 12:45PM0.26m | 1:09AM0.17m | 1:22PM0.23m | 1:46AM0.17m | 1:59PM0.26m | 2:23AM0.23m | 2:39PM0.37m | 3:04AM0.36m | 3:21PM0.53m | 3:48AM0.55m | 4:10PM0.72m | 4:39AM0.78m | 5:06PM0.91m | ||||||||
6:45 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | |
— | — | 9:37 | — | — | 9:37 | — | — | 9:35 | — | — | 9:34 | — | — | 9:32 | — | — | 9:30 | — | — | 9:30 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 23 | 20 | 21 | 26 | 28 | 26 | 29 | 28 | 22 | 23 | 22 | 22 | 24 | 23 | 21 | 22 | 21 | 20 | 21 | 21 |
Feels °C | 20 | 20 | 15 | 17 | 20 | 22 | 22 | 26 | 23 | 20 | 21 | 19 | 22 | 22 | 20 | 22 | 21 | 19 | 19 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | W 8 | — | WNW 5 | WNW 6 | W 10 | NW 5 | WSW 8 | W 8 | WSW 8 | WSW 10 | WSW 8 | WSW 9 | W 8 | W 8 | W 7 | W 8 | W 8 | W 10 | W 7 | W 10 | WNW 4 |
6 | — | 21 | 7 | 17 | 11 | 14 | 22 | 7 | 31 | 13 | 26 | 34 | 47 | 28 | 29 | 44 | 2 | 26 | 18 | 6 | |
Swell 2 Height (m) Direction Period (s) | — | — | W 9 | W 8 | — | WSW 9 | NW 5 | — | W 10 | W 6 | WSW 10 | — | W 4 | — | WSW 9 | — | — | W 10 | W 10 | — | W 7 |
— | — | 2 | 4 | — | 16 | 1 | — | 8 | 1 | 10 | — | 1 | — | 8 | — | — | 2 | 2 | — | 8 | |
Swell 3 Height (m) Direction Period (s) | — | — | W 12 | W 9 | — | — | — | — | — | — | W 6 | — | — | — | — | — | — | — | — | — | W 10 |
— | — | 3 | 7 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | 8 | |
Wind waves Height (m) Direction Period (s) | NW 4 | WNW 4 | N 2 | — | WNW 10 | NNE 3 | ENE 3 | W 8 | NW 4 | W 4 | W 4 | WNW 4 | — | — | NW 3 | — | — | W 7 | — | W 7 | NW 4 |
4 | 31 | 1 | — | 86 | 3 | 1 | 36 | 3 | 4 | 4 | 5 | — | — | 3 | — | — | 25 | — | 46 | 10 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 263 | 1368 | 27 | 16 | 0 | 96 | 120 | 508 | 173 | 260 | 520 | 16 | 16 | 274 | 16 | 16 | 482 | 16 | 16 | 210 | 459 |
Best forecast wave conditions in Vendee | |||||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
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.











