Surf Forecasts:
Porsmilin surf forecast from 29 Aug 2026:
- Best quality surf: Monday 31 Aug, 5PM (local time) - 7ft (2.2m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 2AM (local time) - 10ft (3.0m), 10s period, W swell with 1,773 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 5PM (local time) - 7ft (2.2m), 10s period with W swell.
Best Forecast Surf Conditions for Porsmilin this week:
The surf forecast for Porsmilin over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 31) at 5PM. The primary swell is predicted to be 2.2m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Porsmilin in the next 16 days are 3.0m 10s and forecast to arrive on Monday (Aug 31) at 2AM. 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 7s period and expected on Sunday (Aug 30) at 11AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Mon 31st Aug) | 7ft (2.2m) 10s |
| Best Surf | 5PM (Mon 31st Aug) | 7ft (2.2m) 10s |
| Most Powerful | 2AM (Mon 31st Aug) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Porsmilin over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
Looking at the full 16-day window, it’s a slow start, then a brief window of decent waves around the end of August and into the start of September, followed by a long dry spell. The best action is squeezed into a few days right around the turn of the month.
The first real surf we’ve got doesn’t show up until Monday the 31st of August. Before that, Saturday the 29th and Sunday the 30th are a write-off – strong, messy winds and poor quality surf. Saturday morning sees a 8ft SW swell with a 28 mph cross-on wind, making it a total mess. The water temperature is sitting at 65°, which is about normal for this time of year here.
Now, Monday the 31st of August is where it starts to get interesting. Monday morning, the surf is still a bit raw with a 8ft W swell at 10 seconds, but by the afternoon, things clean right up. The wind swings to a light WNW cross-off around 9 mph, and the combo energy is solid at 942 (moderate). The waves are coming in around 7ft from the west, with a 10-second period. That afternoon shapes up as the first real standout of the outlook.
Tuesday the 1st of September is a bit of a letdown – the swell drops off fast, and the wind turns onshore again. Poor conditions.
The next real standout lands on Saturday the 5th of September. This is the pick of the whole forecast. The morning brings a clean 6ft WNW swell, with a long 12-second period (groundswell), and a glassy light easterly cross-off breeze at just 3 mph. The combined energy is 796 (moderate), and the conditions are described as very good. That’s a session to circle on the calendar. This longer-period swell will have some good energy and shape, though at a beach break like Porsmilin (sandbar) the long period can make it a bit straight, but with that wind, it’ll be worth the paddle.
After that, the following week shows a few more clean mornings, like Monday the 7th and Tuesday the 8th of September, with offshore winds and moderate swell around 5-6ft, but the quality steps down a notch. From the 10th of September onward, the bottom drops out. Swell sizes drop below 3ft, the wind turns messy, and the combined energy readings fall into the low double digits – 42 to 191 (weak). That’s a long, quiet run right through to the end of the 16-day window.
So, in short: the best bets are Monday afternoon the 31st of August and Saturday morning the 5th of September. The 5th is the standout – clean, glassy, solid groundswell. Don’t sleep on it.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat morning. Very mild (max 19°C on Sat morning, min 17°C on Mon morning). Winds decreasing (strong winds from the WSW on Sat morning, calm by Mon night). | Days 4-6 Weather SummarySome drizzle, heaviest during Thu morning. Very mild (max 19°C on Wed afternoon, min 16°C on Tue morning). Mainly fresh winds. | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | SW 8 | W 9 | W 9 | W 9 | WSW 7 | W 10 | W 10 | W 10 | WNW 10 | WNW 9 | W 9 | WNW 8 | W 8 | W 7 | W 8 | W 8 | W 8 | WNW 8 | WNW 9 | WNW 9 | WNW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 868 | 1566 | 710 | 328 | 572 | 1773 | 1316 | 942 | 563 | 243 | 162 | 90 | 99 | 177 | 500 | 393 | 309 | 300 | 406 | 443 | 908 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-off | cross-off | glassy | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off |
High Tide | 6:48PM6.00m | 7:06AM5.85m | 7:20PM6.06m | 7:38AM5.88m | 7:53PM5.99m | 8:13AM5.78m | 8:30PM5.79m | 8:50AM5.57m | 9:10PM5.46m | 9:32AM5.24m | 9:57PM5.03m | 10:25AM4.84m | 11:00PM4.58m | ||||||||
Low Tide | 12:51PM0.38m | 1:11AM0.19m | 1:23PM0.29m | 1:43AM0.18m | 1:56PM0.31m | 2:16AM0.29m | 2:31PM0.45m | 2:52AM0.52m | 3:10PM0.70m | 3:33AM0.86m | 3:57PM1.04m | 4:23AM1.27m | 4:56PM1.42m | ||||||||
 |  |  |  |  |  | |  | | | | | | | |  | | | | | | |
 | 7:31 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — | 7:37 | — | — | 7:39 | — | — |
 | — | — | 9:07 | — | — | 9:05 | — | — | 9:02 | — | — | 9:00 | — | 8:59 | — | — | 8:57 | — | — | 8:54 | — |
mm | 2 | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — |
Temp °C | 19 | 19 | 18 | 19 | 19 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 19 | 19 | 18 | 19 | 18 | 17 | 17 | 17 |
Feels °C | 14 | 12 | 15 | 15 | 14 | 12 | 14 | 14 | 16 | 15 | 15 | 17 | 15 | 16 | 18 | 15 | 18 | 17 | 13 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | — | — | W 9 | W 9 | — | — | W 10 | W 10 | WNW 10 | WNW 9 | W 9 | WNW 8 | W 8 | NW 10 | SW 14 | W 8 | W 8 | WNW 8 | WNW 9 | WNW 9 | WNW 13 |
| kJ | — | — | 710 | 328 | — | — | 1316 | 942 | 563 | 243 | 162 | 90 | 99 | 16 | 8 | 393 | 309 | 300 | 406 | 443 | 908 |
Swell 2 Height (m) Direction Period (s) | — | — | SSW 8 | NNW 7 | — | — | — | — | — | SW 18 | — | SW 16 | SW 16 | SW 15 | — | SW 15 | SW 15 | SW 14 | WNW 11 | SW 14 | SW 14 |
| kJ | — | — | 150 | 30 | — | — | — | — | — | 12 | — | 10 | 10 | 9 | — | 8 | 8 | 8 | 12 | 8 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | S 18 | SW 16 | — | — | — | — | — | — | — | SW 14 | — | SW 14 |
| kJ | — | — | — | — | — | — | — | — | — | 6 | 11 | — | — | — | — | — | — | — | 8 | — | 7 |
Wind waves Height (m) Direction Period (s) | SW 8 | W 9 | — | SW 7 | WSW 7 | W 10 | — | — | — | — | — | — | SW 3 | W 7 | W 8 | — | — | — | — | — | — |
| kJ | 868 | 1566 | — | 121 | 572 | 1773 | — | — | — | — | — | — | 2 | 177 | 500 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 531 | 457 | 10 | 82 | 385 | 531 | 2 | 0 | 0 | 25 | 36 | 36 | 314 | 549 | 10 | 63 | 540 | 36 | 314 | 2 | 0 |
Best forecast wave conditions in Finistere - Brittany | |||||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||||
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Information about the Porsmilin Surf forecast
The above surf forecast table for Porsmilin provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Porsmilin can be found by selecting the local surf guide option on the grey menu. Our Porsmilin 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 (Porsmilin) 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 Porsmilin 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.
Porsmilin is 11 km (7 miles) from the city of Camaret-sur-Mer. If you plan a holiday in Finistere - Brittany, look for hotels and other accommodation in Camaret-sur-Mer. Camaret-sur-Mer has rooms for a wide range of budgets as well as car hire and transport links.
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