Surf Forecasts:
La Tranche sur Mer surf forecast from 28 Aug 2026:
- Best quality surf: Saturday 29 Aug, 11PM (local time) - 5ft (1.6m), 9s period, WSW swell with cross-offshore winds.
- Most powerful swell: Saturday 29 Aug, 5PM (local time) - 6.5ft (2.0m), 8s period, WSW swell with 508 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 11PM (local time) - 5ft (1.6m), 9s period with WSW 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 29) at 11PM. The primary swell is predicted to be 1.6m and 9s period with a secondary swell of 1.2m and 9s. 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 2.0m 8s and forecast to arrive on Saturday (Aug 29) 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 1.1m 6s period and expected on Friday (Aug 28) at 11AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 29th Aug) | 5ft (1.6m) 9s |
| Best Surf | 11PM (Sat 29th Aug) | 5ft (1.6m) 9s |
| Most Powerful | 5PM (Sat 29th Aug) | 6.5ft (2.0m) 8s |
Table - best surf conditions forecast for La Tranche sur Mer over the next 16 days.
The Lowdown
Alright mate, Rusty with the imperial numbers for you.
Let's be straight, the next week at La Tranche sur Mer is mostly a bust. Friday the 28th and Saturday the 29th are blown out with strong cross-shore winds. Waves will be 4 to 7ft but it’s messy, lumpy, and not worth the paddle.
Sunday the 30th looks better on paper – a light offshore breeze, clean conditions, and a 4ft west swell. The energy is moderate, but the report says it might be too big for this spot. Monday the 31st is the same story: clean, offshore wind, 4ft west swell with moderate energy, but seemingly too much for the break. If you're keen, Monday afternoon is your best bet this week with that clean 4ft swell and a gentle breeze.
From Tuesday the 1st of September, it goes flat. Swell drops to 1ft, 2ft, 3ft at best, for about nine days. You'll be looking at a flat ocean.
The one bright spot is Saturday morning, the 5th of September. A 3ft west swell, but with a very long 13-second period – that's proper groundswell. It’ll be clean with a light offshore wind. The energy is moderate (219), and the conditions should be good. That long period will make it a bit straight at the beach, but it’s the best wave of the whole run.
Water temp is about normal for the season.
For those windy days later in August, you might be better off with a kite than a paddleboard.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Fri morning. Warm (max 21°C on Sun afternoon, min 17°C on Fri morning). Winds decreasing (strong winds from the WSW on Sat afternoon, light winds from the WSW by Sun morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Wed afternoon, min 16°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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) | WSW 6 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | WSW 8 | W 10 | W 9 | WSW 9 | W 9 | W 10 | W 10 | W 10 | WNW 10 | W 9 | W 8 | WNW 8 | W 8 | W 8 | WNW 8 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 183 | 180 | 361 | 508 | 256 | 267 | 203 | 238 | 287 | 296 | 202 | 121 | 154 | 25 | 51 | 53 | 11 | 4 | 19 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | off | cross-off | on | cross-off | cross-off |
High Tide | 5:51PM4.42m | 6:06AM4.23m | 6:14PM4.51m | 6:28AM4.30m | 6:38PM4.54m | 6:53AM4.32m | 7:05PM4.48m | 7:21AM4.27m | 7:37PM4.33m | 7:54AM4.14m | 8:13PM4.08m | 8:32AM3.91m | 8:56PM3.75m | ||||||||
Low Tide | 11:42AM0.19m | 00:05AM0.02m | 12:18PM0.03m | 00:40AM-0.09m | 12:54PM-0.03m | 1:16AM-0.09m | 1:32PM0.00m | 1:54AM0.02m | 2:12PM0.14m | 2:35AM0.24m | 2:56PM0.36m | 3:21AM0.53m | 3:46PM0.64m | 4:14AM0.85m | |||||||
 |  |  |  | | |  | | |  | |  | | |  | | | | | | | |
 | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:24 | — | — | 7:24 | — | — | 7:26 | — | — | 7:26 | — | — |
 | — | 8:52 | — | — | 8:51 | — | — | 8:49 | — | — | 8:46 | — | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — |
mm | 1 | 1 | 1 | — | 1 | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 20 | 19 | 20 | 19 | 18 | 20 | 19 | 18 | 21 | 20 | 19 | 21 | 21 |
Feels °C | 15 | 16 | 16 | 17 | 15 | 17 | 19 | 19 | 17 | 17 | 18 | 18 | 17 | 17 | 15 | 16 | 18 | 15 | 19 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | — | W 11 | — | — | — | WSW 8 | W 10 | — | — | W 9 | W 10 | W 10 | W 10 | — | WNW 5 | W 8 | — | W 8 | WNW 5 | WNW 8 | W 7 |
| kJ | — | 40 | — | — | — | 256 | 267 | — | — | 287 | 296 | 202 | 121 | — | 20 | 36 | — | 11 | 4 | 19 | 4 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 9 | W 8 | — | — | W 8 | — | WNW 3 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 25 | 51 | — | — | 4 | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | — | — | W 9 | WSW 9 | WSW 9 | W 10 | — | — | WNW 10 | N 3 | N 3 | WNW 8 | NW 4 | — | — | — |
| kJ | 74 | 183 | 180 | 361 | 508 | — | — | 203 | 238 | 86 | 71 | — | — | 154 | 5 | 2 | 53 | 9 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 117 | 263 | 274 | 209 | 284 | 338 | 35 | 16 | 35 | 295 | 35 | 16 | 0 | 0 | 0 | 16 | 16 | 0 | 120 | 151 | 274 |
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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