Surf Forecasts:
La Tranche sur Mer surf forecast from 9 Aug 2026:
- Best quality surf: Thursday 13 Aug, 2AM (local time) - 1.5ft (0.5m), 9s period, W swell with cross-offshore winds.
- Most powerful swell: Friday 14 Aug, 5PM (local time) - 3ft (0.9m), 9s period, WNW swell with 147 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 2AM (local time) - 1.5ft (0.5m), 9s 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 Thursday (Aug 13) at 2AM. The primary swell is predicted to be 0.5m and 9s period with a secondary swell of 0.3m and 3s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at La Tranche sur Mer in the next 16 days are 0.9m 9s and forecast to arrive on Friday (Aug 14) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Monday (Aug 10) at 8PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 13th Aug) | 1.5ft (0.5m) 9s |
| Best Surf | 2AM (Thu 13th Aug) | 1.5ft (0.5m) 9s |
| Most Powerful | 5PM (Fri 14th Aug) | 3ft (0.9m) 9s |
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 menu for La Tranche sur Mer.
To be straight with you, the next week and a half looks pretty flat and quiet. We’ve got a long stretch of small, weak swell and mostly average wind. The first real chance of a wave doesn't show up until Thursday the 13th, and even then, it's barely a ripple. The water temp is about average for this time of year, nothing wild there.
The best we've got in this whole outlook is shaping up to be Friday the 14th and Saturday the 15th, but don't get too excited. Friday morning the 14th is your pick. We've got a 2ft swell from the W with a 10-second period, and a light offshore wind from the WNW. That combo should clean things up nicely. The combined wave energy is moderate at best, reading 92. It’s not big, but for a beginner-friendly spot like this, it’ll be the most fun you'll have all week. Be aware, this break can get a crowd sometimes, so get out there early.
Friday afternoon the 14th sees the swell nudge up to 3ft from the WNW with a 9-second period, and the combined energy hits 232. But the wind swings stronger onshore, making it a bit more of a handful. Saturday the 15th is your other slim chance. The morning has a 2ft W swell, but it’s a bit weaker. The afternoon is clean with a light offshore, but the swell drops to just 2ft.
Most other days are a write-off. You’ve got a stretch from the 17th of August right through to the 25th where the swell is tiny, often under 2ft, and the wind is messy. The 24th of August has a glassy morning but with a pathetic 0.7ft swell. There's just no power there.
So, if you're desperate, aim for the morning of Friday the 14th or the afternoon of Saturday the 15th. For the rest, you might as well find something else to do.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Wed afternoon, min 19°C on Mon morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 33°C on Thu afternoon, min 20°C on Sat morning). Wind will be generally light. | ||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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 | WSW 7 | W 7 | WSW 7 | W 8 | WSW 7 | W 6 | W 11 | WSW 10 | W 9 | W 9 | W 10 | W 11 | W 10 | WNW 9 | W 9 | W 8 | W 8 | WNW 5 |
Wave Graph  | |||||||||||||||||||
 kJ | 7 | 9 | 38 | 10 | 6 | 9 | 3 | 21 | 34 | 44 | 44 | 88 | 82 | 92 | 147 | 25 | 51 | 33 | 18 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | cross-off | cross-off | on | cross-off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | off | cross-off |
High Tide | 3:41AM3.75m | 4:02PM4.06m | 4:35AM4.04m | 4:52PM4.40m | 5:22AM4.26m | 5:36PM4.65m | 6:03AM4.40m | 6:16PM4.78m | 6:41AM4.43m | 6:54PM4.76m | 7:16AM4.37m | 7:28PM4.61m | |||||||
Low Tide | 8:42PM0.74m | 9:11AM0.72m | 9:47PM0.40m | 10:10AM0.39m | 10:42PM0.05m | 11:01AM0.07m | 11:31PM-0.23m | 11:48AM-0.16m | 00:16AM-0.37m | 12:32PM-0.26m | 00:59AM-0.36m | 1:14PM-0.22m | 1:40AM-0.21m | ||||||
 | | |  | | | | | | | | | | | | |  | |  | |
 | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — |
 | 9:24 | — | — | 9:23 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 | — | — | 9:16 | — | — | 9:15 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 25 | 22 | 26 | 26 | 25 | 29 | 27 | 27 | 31 | 29 | 31 | 33 | 32 | 27 | 30 | 26 | 23 | 28 | 27 |
Feels °C | 21 | 21 | 25 | 22 | 24 | 26 | 24 | 26 | 27 | 26 | 29 | 29 | 27 | 25 | 26 | 23 | 23 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | NW 3 | WSW 7 | WSW 7 | WNW 4 | WSW 7 | WNW 8 | W 6 | W 11 | WSW 10 | W 9 | W 9 | WSW 12 | W 11 | W 10 | W 9 | W 6 | W 8 | W 8 | WNW 5 |
| kJ | 2 | 9 | 16 | 7 | 4 | 6 | 3 | 21 | 34 | 44 | 44 | 28 | 82 | 92 | 85 | 15 | 51 | 33 | 18 |
Swell 2 Height (m) Direction Period (s) | WSW 7 | WNW 4 | WNW 9 | WSW 7 | WNW 5 | W 10 | W 10 | W 6 | WNW 7 | NW 3 | NW 4 | W 12 | NW 4 | — | — | W 9 | — | — | W 8 |
| kJ | 5 | 2 | 17 | 10 | 2 | 2 | 2 | 1 | 5 | 2 | 1 | 45 | 4 | — | — | 25 | — | — | 12 |
Swell 3 Height (m) Direction Period (s) | W 9 | W 9 | — | W 9 | W 8 | WNW 5 | W 8 | W 6 | W 6 | W 5 | W 13 | — | — | — | — | — | — | — | — |
| kJ | 7 | 7 | — | 6 | 6 | 2 | 1 | 1 | 1 | 1 | 3 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | W 7 | NNE 2 | — | WSW 7 | NW 3 | — | WNW 2 | NW 4 | — | W 10 | NW 4 | — | WNW 9 | N 2 | — | — | — |
| kJ | — | — | 38 | 1 | — | 9 | 1 | — | 1 | 6 | — | 88 | 11 | — | 147 | 1 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 263 | 120 | 309 | 203 | 292 | 381 | 168 | 27 | 263 | 0 | 0 | 16 | 0 | 0 | 330 | 27 | 0 | 16 | 40 |
Best forecast wave conditions in Vendee | |||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||
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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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