Surf Forecasts:
Porsmilin surf forecast from 25 Aug 2026:
- Most powerful swell: Monday 31 Aug, 5AM (local time) - 8ft (2.5m), 9s period, W swell with 1,306 kJ wave energy.
Best Forecast Surf Conditions for Porsmilin this week:
The most powerful waves expected at Porsmilin in the next 16 days are 2.5m 9s and forecast to arrive on Monday (Aug 31) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 8s period and expected on Tuesday (Aug 25) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Mon 31st Aug) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Porsmilin over the next 16 days.
The Lowdown
Alright, let’s talk about Porsmilin for the next couple of weeks.
To be honest, this is going to be a long haul. Plenty of swell coming through, but the wind is just bad for most of it. Lots of onshore and cross-onshore breezes gumming up the works. You’re gonna need to pick your moments.
Right now, through the end of August, it’s pretty much a bust. Tuesday the 25th, Wednesday, Thursday… all poor. Winds are onshore or cross-on, and the waves are just choppy junk. Thursday the 27th brings a 6ft swell from the SW (385 combined energy), but with a 20 km/h onshore wind, it’s a mess.
Friday the 28th afternoon is the first little window. A 5ft WSW swell (520 combined energy) with a cross-offshore wind from the NW. That cleans it up and gives some shape. It’s marginal – tide might mess with it – but it’s the best we’ve seen all week.
Saturday the 29th pushes up to 8ft swell (605 combined energy) but it’s with a strong 30 km/h cross-onshore wind. Blown out. Hard pass.
If you can hold out, Monday the 31st of August is the real standout. A solid 8ft swell from the WNW, with the wind going cross-off in the morning and a gentle cross in the afternoon. That’s 1219 and then 2056 combined energy – serious power. The period is 10 seconds, so a proper groundswell. Porsmilin is a sandbar, fairly exposed, and crowds are “sometimes,” so expect a few heads out. The water temp is about 64°F, which is normal for the time of year.
September starts rough. Tuesday the 1st, Wednesday, Thursday… all blown out or choppy with strong SW winds. Thursday afternoon, the 3rd, we get a smaller clean-up with a 5ft swell and cross-off winds from the NW (303 combined energy), but the period is short at 7 seconds. Fine for a small board.
The only other real glimmer is Sunday the 6th of September. Morning: a clean 5ft WNW swell (551 combined energy) with a light offshore from the ENE. Glassy. That’s a proper good session. But Sunday afternoon the wind swings cross-shore and it’s average again.
The second week brings bigger, more powerful swells – including a massive 10ft WSW swell on Tuesday the 8th with a very long 15-second period (5788 combined energy) – but it’s all onshore wind from the SW. That kind of long-period groundswell is tough on a sandbar; it’ll bend too straight. That’s expert only if it’s rideable, and the wind kills it. Wednesday the 9th is a bit better with an 8ft WNW swell and light cross-on wind (1363 combined energy), but still marginal.
The waves are showing up, but the weather isn’t playing ball. Surf the 28th afternoon if you’re itching. Make the 31st and the morning of the 6th your targets. The rest? Just keep an eye on the forecast.
Stay patient.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Wed night. Warm (max 20°C on Wed afternoon, min 17°C on Wed night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sat morning. Very mild (max 19°C on Fri afternoon, min 16°C on Fri morning). Winds decreasing (strong winds from the SW on Sat morning, light winds from the SSW by Sat night). | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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) | WNW 11 | WNW 10 | WNW 10 | WNW 9 | SSW 7 | SSW 6 | SW 8 | SW 8 | SW 7 | WNW 9 | WSW 9 | WNW 8 | WSW 8 | WSW 8 | SW 7 | WNW 8 | WNW 8 | W 9 | WNW 10 | WNW 10 | WNW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 66 | 88 | 74 | 61 | 38 | 36 | 373 | 292 | 88 | 98 | 343 | 427 | 604 | 392 | 237 | 174 | 169 | 1112 | 1219 | 1201 | 1031 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | on | cross-on | on | on | cross-on | cross-on | cross-off | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross | cross-off | cross | cross-on |
High Tide | 4:39PM4.80m | 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 | 10:35AM1.56m | 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 | |||||||
 |  |  | |  |  | | |  | | | |  | | | |  | | | |  | |
 | 7:24 | — | — | 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 | — | — | — | — | — | 4 | — | — | 1 | — | — | — | 3 | — | — | — | 1 | 1 | — | — | — |
Temp °C | 19 | 19 | 19 | 19 | 20 | 19 | 18 | 19 | 18 | 18 | 19 | 18 | 18 | 19 | 19 | 19 | 19 | 18 | 17 | 18 | 17 |
Feels °C | 19 | 18 | 18 | 18 | 18 | 20 | 16 | 17 | 15 | 16 | 17 | 15 | 12 | 18 | 17 | 15 | 14 | 13 | 12 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | SW 8 | WNW 10 | WNW 10 | SSW 7 | SSW 7 | W 8 | WNW 11 | SW 8 | SW 7 | W 7 | SSW 7 | WNW 8 | S 8 | NW 8 | SW 7 | WNW 8 | WNW 8 | — | WNW 10 | WNW 10 | WNW 10 |
| kJ | 43 | 88 | 74 | 35 | 38 | 29 | 12 | 292 | 88 | 70 | 73 | 427 | 1 | 129 | 237 | 151 | 155 | — | 1219 | 1201 | 1031 |
Swell 2 Height (m) Direction Period (s) | WNW 11 | SW 8 | SW 8 | WNW 9 | W 8 | NE 4 | NE 5 | WNW 10 | W 8 | WNW 9 | W 9 | SW 7 | — | — | WNW 8 | W 13 | W 13 | — | — | — | — |
| kJ | 66 | 32 | 14 | 61 | 33 | 1 | 1 | 40 | 41 | 98 | 104 | 46 | — | — | 219 | 3 | 3 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | NNE 8 | NNE 6 | N 5 | N 5 | SW 12 | N 5 | — | — | WNW 10 | SW 6 | — | — | — | — | W 8 | — | — | — | — | — | — |
| kJ | 19 | 8 | 2 | 1 | 6 | 1 | — | — | 64 | 40 | — | — | — | — | 114 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSW 2 | SSW 4 | — | — | SSW 6 | SW 8 | — | — | — | WSW 9 | — | WSW 8 | WSW 8 | — | SW 7 | SW 7 | W 9 | — | W 10 | — |
| kJ | — | 1 | 9 | — | — | 36 | 373 | — | — | — | 343 | — | 604 | 392 | — | 174 | 169 | 1112 | — | 855 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 21 | 36 | 33 | 19 | 13 | 141 | 25 | 36 | 25 | 13 | 2 | 10 | 212 | 10 | 10 | 36 | 547 | 534 | 2 | 10 | 2 |
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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