Surf Forecasts:
Porsmilin surf forecast from 25 Aug 2026:
- Most powerful swell: Sunday 30 Aug, 2AM (local time) - 10ft (3.0m), 10s period, W swell with 1,536 kJ wave energy.
Best Forecast Surf Conditions for Porsmilin this week:
The most powerful waves expected at Porsmilin in the next 16 days are 3.0m 10s and forecast to arrive on Sunday (Aug 30) 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 0.1m 5s period and expected on Wednesday (Aug 26) at 11AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sun 30th 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 have a look at what’s cooking for the next couple of weeks.
Right off the bat, the first week is a bit of a write-off. The only break on the radar is Porsmilin, a sandbar setup, and it’s copping it on the chin with onshore winds and messy conditions for days. The water temp is sitting at 64°, which is pretty much normal for this time of year, so no surprises there.
The first real chance to get wet doesn’t show up until the morning of the 4th of September. A cold front has passed, and we get a clean little window. The swell is only 3ft from the west, with a 9-second period, so you’re looking at knee-to-waist high lines with moderate energy (301). The wind is a light cross-offshore from the north, which will keep it clean. It’s not a standout, but after a week of nothing, it’s a start.
The real standout of the whole period is the afternoon of the 5th of September. Saturday. Porsmilin sees a solid 8ft groundswell from the west, with a 10-second period and strong energy (1404). The wind is swinging north-west, still cross-offshore, keeping the faces clean. This is the one to circle. The swell is getting up there, so it’s more for the intermediates and above – beginners might find it a handful. It’s a pretty consistent spot, so you won’t be waiting forever for sets.
The 7th of September morning is worth a mention too. A long-period swell from the west-northwest at 12 seconds and 8ft, with moderate energy (1649). Wind is moderate cross-shore, so there’ll be a bit of chop, but the long period means proper groundswell lines. This kind of swell can break a bit straight at a sandbar, but it’ll still offer some punchy walls.
The afternoon of the 9th of September looks like a nice little clean-up. After a big few days, the swell drops to 5ft from the west, but it’s a long 11-second period, and the wind switches to a light offshore from the north-northeast – glassy conditions. It’s a nice, peaceful end to the window. The energy is moderate (563), so not a beast, but clean and fun.
There’s a massive pulse on the 8th of September afternoon – 10ft with a 15-second period and energy up at 4991 – but the wind is onshore and strong, so it’s a mess. That one’s for the kites, not the paddlers.
Overall, don’t bother with the first week. The 5th of September is your best bet, with the 4th and 9th as solid backups. The long-range stuff on the 7th and 9th is promising, but we’ll know more closer to the day.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Wed night. Warm (max 20°C on Wed night, min 17°C on Wed morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Fri night. Very mild (max 19°C on Sat morning, min 16°C on Mon morning). Winds decreasing (strong winds from the SW on Sat morning, light winds from the SW by Sat night). | ||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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) | WNW 10 | WNW 9 | W 8 | W 8 | SW 7 | SSW 7 | SW 7 | SW 8 | SW 7 | WNW 8 | WSW 8 | WSW 8 | W 10 | W 10 | W 9 | WSW 8 | W 8 | W 8 | W 10 |
Wave Graph | |||||||||||||||||||
74 | 61 | 33 | 29 | 135 | 163 | 103 | 329 | 184 | 192 | 859 | 891 | 1536 | 730 | 364 | 333 | 333 | 396 | 417 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | on | on | on | on | cross-on | cross | on | cross-on | cross-on | cross-on | on | on | cross | cross-off | cross-on | cross-on |
High Tide | 5:00AM4.82m | 5:14PM5.19m | 5:33AM5.17m | 5:46PM5.54m | 6:04AM5.47m | 6:17PM5.82m | 6:35AM5.71m | 6:48PM6.00m | 7:06AM5.85m | 7:20PM6.06m | 7:38AM5.88m | 7:53PM5.99m | |||||||
Low Tide | 11:01PM1.27m | 11:13AM1.18m | 11:36PM0.89m | 11:47AM0.84m | 00:08AM0.57m | 12:19PM0.57m | 00:40AM0.33m | 12:51PM0.38m | 1:11AM0.19m | 1:23PM0.29m | 1:43AM0.18m | 1:56PM0.31m | 2:16AM0.29m | ||||||
— | 7:26 | — | — | 7:28 | — | — | 7:28 | — | — | 7:31 | — | — | 7:31 | — | — | 7:33 | — | — | |
9:15 | — | — | 9:13 | — | — | 9:10 | — | — | 9:08 | — | — | 9:07 | — | — | 9:05 | — | — | 9:02 | |
mm | — | — | — | 5 | — | — | — | — | — | 3 | 3 | — | — | — | 2 | — | — | — | — |
Temp °C | 19 | 19 | 19 | 20 | 18 | 19 | 18 | 18 | 19 | 18 | 19 | 19 | 19 | 19 | 19 | 18 | 17 | 17 | 17 |
Feels °C | 18 | 18 | 17 | 19 | 16 | 17 | 16 | 15 | 17 | 16 | 14 | 15 | 17 | 17 | 15 | 14 | 14 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 9 | SSW 6 | W 8 | W 8 | W 8 | SW 7 | SW 8 | SW 7 | WNW 8 | — | — | WSW 9 | W 10 | W 9 | WSW 8 | W 8 | W 8 | W 10 |
74 | 61 | 26 | 29 | 31 | 78 | 103 | 329 | 184 | 192 | — | — | 1207 | 730 | 364 | 333 | 333 | 396 | 417 | |
Swell 2 Height (m) Direction Period (s) | SW 8 | N 5 | W 8 | NE 4 | WNW 11 | WNW 10 | W 8 | NW 9 | WNW 9 | — | — | — | — | SSW 7 | — | — | W 11 | — | SSW 6 |
14 | 1 | 33 | 1 | 12 | 40 | 78 | 41 | 110 | — | — | — | — | 57 | — | — | 9 | — | 14 | |
Swell 3 Height (m) Direction Period (s) | N 5 | SW 12 | SW 12 | SW 12 | — | — | WNW 10 | W 11 | — | — | — | — | — | — | — | — | — | — | — |
2 | 6 | 6 | 6 | — | — | 64 | 57 | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SW 4 | SSW 7 | — | S 5 | SW 7 | SSW 7 | — | — | — | SW 7 | WSW 8 | WSW 8 | W 10 | — | SSW 6 | — | — | — | — |
7 | 25 | — | 25 | 135 | 163 | — | — | — | 88 | 859 | 891 | 1536 | — | 49 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 33 | 39 | 34 | 500 | 25 | 33 | 25 | 25 | 212 | 36 | 212 | 540 | 10 | 36 | 246 | 198 | 2 | 2 | 10 |
Best forecast wave conditions in Finistere - Brittany | |||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











