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St Jean de Monts surfForecast / Vendee / France
12 Day Weather and Surf, issued 7 am Wednesday 17 Sep 2025 CEST
Best Forecast Surf Conditions for St Jean de Monts this week:
The surf forecast for St Jean de Monts over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 5AM. The primary swell is predicted to be 1.5m and 12s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at St Jean de Monts in the next 12 days are 1.5m 13s and forecast to arrive on Thursday (Sep 18) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 5s period and expected on Tuesday (Sep 23) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 18th Sep) | 5ft (1.5m) 12s |
| Best Surf | 5AM (Thu 18th Sep) | 5ft (1.5m) 12s |
| Most Powerful | 8AM (Thu 18th Sep) | 5ft (1.5m) 13s |
Table - best surf conditions forecast for St Jean de Monts over the next 12 days.
Short Range Forecast Mostly dry. Warm (max 25°C on Thu night, min 16°C on Wed morning). Wind will be generally light. | Days 3-6 Weather Summary Heavy rain (total 21mm), heaviest during Mon afternoon. Warm (max 20°C on Sat morning, min 11°C on Mon night). Winds increasing (light winds from the W on Sun morning, fresh winds from the NNE by Mon night). | ||||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 11 | 10 | 12 | 12 | 12 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 8 | 8 | 8 | 9 | 8 | 8 | 5 | 5 | 14 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 229 | 165 | 461 | 702 | 547 | 338 | 249 | 198 | 194 | 157 | 181 | 262 | 161 | 130 | 105 | 56 | 32 | 10 | 0 | 0 | 4 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | cross | cross | cross- on | cross- off | cross | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross | off | off | off | off | off | cross- off | off |
High Tide / height (m) | 2:59PM 3.60 | 3:36AM 3.56 | 3:50PM 3.91 | 4:18AM 3.81 | 4:29PM 4.16 | 4:51AM 4.02 | 5:00PM 4.33 | 5:18AM 4.17 | 5:27PM 4.44 | 5:42AM 4.27 | 5:51PM 4.48 | 6:04AM 4.33 | 6:15PM 4.46 | ||||||||
Low Tide / height (m) | 8:40PM 0.97 | 9:03AM 0.99 | 9:39PM 0.67 | 9:56AM 0.67 | 10:25PM 0.39 | 10:39AM 0.39 | 11:04PM 0.17 | 11:17AM 0.18 | 11:40PM 0.04 | 11:53AM 0.07 | 12:14AM 0.01 | 12:28PM 0.07 | 12:47AM 0.09 | ||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||
| Sunrise | 7:47 | - | - | 7:48 | - | - | 7:50 | - | - | 7:50 | - | - | 7:52 | - | - | 7:54 | - | - | 7:54 | - | - |
| Sunset | - | 8:16 | - | - | 8:15 | - | - | 8:13 | - | - | 8:10 | - | - | 8:08 | - | - | 8:07 | - | - | 8:05 | - |
 | |  | | |  |  | | | |  |  |  | |  |  |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | 1 | 4 | 2 | 5 | 2 | 6 | 1 | - | - | - |
| Temp. °C | 17 | 17 | 17 | 16 | 21 | 25 | 22 | 22 | 21 | 20 | 19 | 16 | 16 | 15 | 15 | 12 | 14 | 15 | 12 | 18 | 16 |
| Feels °C (?) | 16 | 16 | 17 | 16 | 19 | 21 | 17 | 19 | 21 | 19 | 16 | 12 | 13 | 12 | 9 | 8 | 9 | 10 | 5 | 12 | 9 |
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Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Vendee
Continuing clean conditions at St Jean de Monts (light winds from the SE at La Roche sur-Yon Aerodrome/Les Ajoncs Airport 54 km from St Jean de Monts). 1.2m 11s groundswell from the W with a 0.6m 11s groundswell from the WSW. 2 swells combining to make bigger set waves.
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our St Jean de Monts surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the St Jean de Monts Surf forecast
The above surf forecast table for St Jean de Monts provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at St Jean de Monts can be found by selecting the local surf guide option on the grey menu. Our St Jean de Monts 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 (St Jean de Monts) 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 St Jean de Monts 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 St Jean de Monts, camping, hotels and holiday cottages in Vendee, consider staying in Challans which is 16 km (10 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 37 km (23 miles) away, La Roche-sur-Yon, Nantes Aeroport Atlantique and Coueron.
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