
Surf Forecasts:
Ste Marguerite surf forecast from 12 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 8PM (local time) - 4ft (1.2m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Friday 18 Sep, 2PM (local time) - 2.5ft (0.8m), 16s period, W swell with 317 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 2AM (local time) - 2ft (0.6m), 10s period with W swell.
Best Forecast Surf Conditions for Ste Marguerite this week:
The surf forecast for Ste Marguerite over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 13) at 2AM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.2m and 13s. Another secondary swell of 0.2m and 2s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Ste Marguerite in the next 16 days are 0.8m 16s and forecast to arrive on Friday (Sep 18) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Wednesday (Sep 16) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 13th Sep) | 2ft (0.6m) 10s |
| Best Surf | 8PM (Wed 16th Sep) | 4ft (1.2m) 10s |
| Most Powerful | 2PM (Fri 18th Sep) | 2.5ft (0.8m) 16s |
Table - best surf conditions forecast for Ste Marguerite over the next 16 days.
The Lowdown
Right, mate, Rusty here. Let's have a look at what's on offer for Ste Marguerite over the next couple of weeks.
To be straight with you, it’s a lean run for a while. The first proper chance for a wave comes on the morning of Saturday the 12th, but it’s just a small, ordinary 2ft W swell with a short 8-second period. The energy is weak (52), and while the wind is a light cross-off from the east, it’s nothing to write home about. The water’s a touch warmer than normal at 68°, but that’s about it for highlights that day.
Sunday the 13th is where your ears should perk up. You get that same 2ft W swell, but the period stretches out to 11 seconds – that’s proper groundswell energy coming through. The kicker here is the wind: glassy conditions in the morning. That’s a major positive, meaning clean, smooth faces. Combined energy is still modest (87), but with that quality of wind, those little waves will be a joy on a point break like this. The morning is the standout session of the entire forecast.
Monday the 14th and Tuesday the 15th are pretty ordinary. The wind turns onshore or cross-onshore, chopping up the small swell. Tuesday arvo sees the energy climb to 109, but with a moderate cross-onshore wind, it’s a mess.
Now, Wednesday the 16th morning has potential for a bigger set. Swell jumps to 4ft from the WNW with a short 8-second period, and energy is moderate (265). The wind is a clean cross-off from the NNW, so it’ll look decent, but the short period means the waves won’t have much shape. Still, it's the most size on offer so far.
From there, things go pear-shaped for over a week. A lot of onshore wind and poor conditions. The swell stays small and inconsistent. There are a few mornings with offshore or glassy winds – like the morning of Monday the 21st and Tuesday the 22nd with NE offshore breezes – but the swell is tiny (2ft to 2ft) and the energy is low. It’s not worth paddling out for.
There is one intriguing blip on the horizon. On the morning of Sunday the 27th, we get a 1ft swell from the WSW with a very long 17-second period. That’s proper long-period groundswell, and the energy is moderate (140). The wind is a light cross-off from the ENE. This is very far out, so treat it as promising but not certain. At a point break like Ste Marguerite, that long period will produce long, peeling lines, even at that height.
The standout for the whole window is the glassy Sunday morning on the 13th. The second-best call is the promising but distant Sunday morning on the 27th. Get out there for that glassy session mid-month.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Mon afternoon, min 16°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Tue afternoon, min 13°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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 | W 8 | W 10 | W 11 | W 11 | W 10 | W 10 | W 9 | W 9 | W 8 | W 11 | WNW 6 | WNW 8 | W 9 | W 10 | W 10 | W 10 | W 10 | W 16 | W 16 | W 14 |
Wave Graph | |||||||||||||||||||||
46 | 32 | 66 | 87 | 82 | 75 | 68 | 41 | 40 | 23 | 87 | 100 | 138 | 175 | 172 | 106 | 125 | 29 | 131 | 314 | 249 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | glassy | cross-on | off | cross-off | cross-on | cross-off | cross-on | cross-on | cross-off | cross-off | cross-on | cross-off | cross-on | cross-on | cross-off | cross | cross-on | cross |
High Tide | 6:15PM4.87m | 6:31AM4.63m | 6:46PM4.75m | 7:01AM4.55m | 7:16PM4.54m | 7:30AM4.38m | 7:46PM4.25m | 8:00AM4.15m | 8:18PM3.92m | 8:33AM3.85m | 8:53PM3.57m | 9:12AM3.53m | 9:37PM3.22m | ||||||||
Low Tide | 12:23PM-0.16m | 00:46AM-0.19m | 1:01PM-0.09m | 1:23AM-0.01m | 1:39PM0.10m | 1:59AM0.27m | 2:17PM0.38m | 2:35AM0.62m | 2:56PM0.74m | 3:14AM1.00m | 3:39PM1.11m | 3:59AM1.36m | 4:32PM1.45m | 4:57AM1.66m | |||||||
7:41 | — | — | 7:43 | — | — | 7:43 | — | — | 7:45 | — | — | 7:47 | — | — | 7:48 | — | — | 7:48 | — | — | |
— | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — | — | 8:15 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 20 | 19 | 19 | 21 | 21 | 20 | 26 | 26 | 22 | 23 | 22 | 16 | 19 | 20 | 16 | 18 | 17 | 14 | 17 | 17 |
Feels °C | 15 | 18 | 17 | 19 | 19 | 17 | 20 | 25 | 25 | 23 | 22 | 17 | 13 | 15 | 17 | 14 | 14 | 14 | 13 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 10 | W 11 | W 11 | W 10 | W 10 | W 9 | W 9 | W 8 | W 11 | W 11 | WNW 8 | W 13 | W 10 | W 10 | W 10 | W 10 | W 9 | W 16 | W 14 |
46 | 32 | 66 | 87 | 82 | 75 | 68 | 41 | 40 | 23 | 22 | 20 | 109 | 3 | 172 | 106 | 125 | 29 | 62 | 314 | 249 | |
Swell 2 Height (m) Direction Period (s) | W 18 | W 16 | W 13 | — | — | — | — | — | — | W 12 | — | — | W 10 | — | — | — | — | — | W 16 | W 9 | — |
6 | 5 | 14 | — | — | — | — | — | — | 3 | — | — | 18 | — | — | — | — | — | 131 | 27 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | WNW 2 | — | — | — | ENE 2 | — | — | — | W 11 | WNW 6 | WNW 8 | W 9 | N 3 | — | — | W 5 | — | — | — |
— | — | 1 | — | — | — | 1 | — | — | — | 87 | 100 | 138 | 175 | 1 | — | — | 21 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 155 | 0 | 0 | 105 | 0 | 0 | 70 | 63 | 69 | 501 | 95 | 81 | 95 | 3 | 16 | 155 | 0 | 3 | 207 | 3 |
Best forecast wave conditions in Loire Atlantique | |||||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||||
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Information about the Ste Marguerite Surf forecast
The above surf forecast table for Ste Marguerite provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ste Marguerite can be found by selecting the local surf guide option on the grey menu. Our Ste Marguerite 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 (Ste Marguerite) 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 Ste Marguerite 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.
Ste Marguerite is 7 km (4 miles) from the city of La Baule-Escoublac. If you plan a holiday in Loire Atlantique, look for hotels and other accommodation in La Baule-Escoublac. La Baule-Escoublac has rooms for a wide range of budgets as well as car hire and transport links.










