Surf Forecasts:
Porsmilin surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 11AM (local time) - 4.5ft (1.3m), 10s period, WNW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 8PM (local time) - 7ft (2.2m), 10s period, WNW swell with 887 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 5AM (local time) - 3ft (0.9m), 7s period with WNW 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 Wednesday (Aug 19) at 5AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.4m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Porsmilin in the next 16 days are 2.2m 10s and forecast to arrive on Thursday (Aug 20) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Sunday (Aug 23) at 8AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 19th Aug) | 3ft (0.9m) 7s |
| Best Surf | 11AM (Wed 19th Aug) | 4.5ft (1.3m) 10s |
| Most Powerful | 8PM (Thu 20th Aug) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Porsmilin over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m looking at the next couple of weeks for Porsmilin. Gotta be honest with you, the start is a bit of a slow cooker, but there’s one morning that’s looking like a proper session if you’ve got the nerve.
The first few days are a write-off. Tuesday, the 18th, is a total no-go with weak, short-period windswell and cross-onshore junk. The combined energy is just 62 (weak), and the water is sitting at 64°F, which is about standard for this time of year, so nothing odd there. Wednesday and Thursday the 19th and 20th show some size, but the wind and tide are messing with the quality.
Friday morning, the 21st of August, is where it starts to get interesting. The swell picks up to 5ft out of the WNW with a 9-second period, and the wind goes light and cross-offshore from the NNW. That’s a clean window. The combined energy is 460 (moderate), and it’s a sandbar setup, so it’ll be offering some decent, rideable waves. It’s going to be a good session, but not the standout.
The real standout, and I mean the one to circle on your calendar, is the morning of Thursday, the 27th of August. The swell jumps to a solid 10ft out of the west with a 9-second period, driving a massive combined energy of 1533 (strong). The wind is a light cross-offshore from the east, keeping the surface clean. But listen, this is big. 10ft is expert territory. This is not for the faint of heart or the weekend warrior. The period is 9 seconds, which is a bit short for that size, so expect some pitching, powerful walls. The sandbar will handle it, but you better know what you’re doing. This is the best on offer, no question.
After that, the surf drops off quickly. Friday the 28th gets messy with onshore wind, and the following days are small and weak. The end of the month and into September is flat to tiny, with a lot of poor surf conditions and cross-onshore wind. There’s a long gap of nothing really worthwhile from the 29th of August right through the 2nd of September.
So, to sum it up: the dawn patrol on Friday the 21st is a nice, clean day for the intermediates. But the big dog is the morning of Thursday the 27th of August. That’s a big, clean swell, but it’s only for the experienced crew.
Stay safe out there.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Wed morning. Warm (max 20°C on Tue afternoon, min 16°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Sun afternoon, min 15°C on Fri night). Winds increasing (light winds from the N on Fri morning, fresh winds from the NNE by Sat afternoon). | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 6 | NW 6 | WNW 7 | WNW 10 | WNW 11 | WNW 10 | WNW 9 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 8 | NW 7 | NW 7 | W 9 | W 9 | W 9 | WNW 6 | W 9 | W 9 | WSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 40 | 36 | 76 | 290 | 450 | 502 | 781 | 869 | 731 | 443 | 304 | 197 | 73 | 33 | 25 | 14 | 14 | 13 | 14 | 14 | 143 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-off | cross-off | cross-on | cross | cross | cross | cross-off | cross-off | off | off | off | off | off | off | off | off | cross-off | glassy |
High Tide | 9:22AM5.22m | 9:40PM5.06m | 10:00AM4.81m | 10:21PM4.57m | 10:44AM4.39m | 11:13PM4.13m | 11:47AM4.03m | 00:35AM3.82m | 1:26PM3.88m | 2:22AM3.82m | 2:58PM4.05m | 3:35AM4.08m | 3:57PM4.40m | 4:22AM4.44m | |||||||
Low Tide | 3:44PM0.99m | 4:04AM1.19m | 4:24PM1.42m | 4:45AM1.64m | 5:13PM1.83m | 5:39AM2.03m | 6:20PM2.14m | 6:56AM2.27m | 7:54PM2.24m | 8:33AM2.23m | 9:21PM2.03m | 9:46AM1.94m | 10:19PM1.66m | ||||||||
 |  |  |  |  |  |  | | | | |  | | | | | | | | | | |
 | 7:15 | — | — | 7:16 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:24 | — | — |
 | — | — | 9:28 | — | — | 9:25 | — | — | 9:23 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 | — | — | 9:16 |
mm | — | — | — | 10 | 1 | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 19 | 17 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 19 | 17 | 18 | 20 | 18 | 18 | 19 | 19 |
Feels °C | 18 | 20 | 19 | 17 | 15 | 14 | 15 | 15 | 16 | 16 | 15 | 13 | 14 | 14 | 11 | 14 | 15 | 12 | 16 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | WNW 6 | NW 6 | WNW 7 | WNW 10 | WNW 11 | WNW 10 | WNW 9 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 8 | NW 7 | NW 7 | W 9 | W 9 | W 9 | WNW 6 | NW 5 | W 9 | WSW 6 |
| kJ | 40 | 36 | 76 | 290 | 450 | 502 | 781 | 869 | 731 | 443 | 304 | 197 | 73 | 33 | 25 | 14 | 14 | 13 | 7 | 14 | 143 |
Swell 2 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | SW 16 | SW 5 | W 9 | SW 14 | SW 14 | SW 13 | SW 13 | N 6 | SW 15 | W 10 | W 9 | SW 14 | WNW 7 | SW 14 | N 4 | W 9 | WNW 5 | WNW 12 |
| kJ | 11 | 11 | 18 | 9 | 10 | 15 | 8 | 8 | 7 | 7 | 3 | 9 | 46 | 28 | 8 | 5 | 8 | 3 | 14 | 3 | 26 |
Swell 3 Height (m) Direction Period (s) | SW 17 | SW 17 | SW 17 | SW 15 | SW 16 | SW 15 | — | — | — | SW 16 | SW 13 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | NW 10 | W 8 | N 4 | WNW 8 | SW 13 |
| kJ | 11 | 11 | 11 | 9 | 10 | 8 | — | — | — | 10 | 7 | 9 | 9 | 8 | 8 | 8 | 4 | 12 | 1 | 7 | 7 |
Wind waves Height (m) Direction Period (s) | — | W 6 | — | SSW 2 | W 5 | — | — | WNW 10 | — | — | — | — | — | NNE 6 | NNW 7 | NNW 6 | NNW 5 | — | — | SW 3 | S 4 |
| kJ | — | 21 | — | 1 | 14 | — | — | 627 | — | — | — | — | — | 55 | 57 | 36 | 41 | — | — | 2 | 10 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 68 | 570 | 2 | 0 | 2 | 10 | 362 | 368 | 2 | 0 | 201 | 0 | 0 | 39 | 39 | 62 | 62 | 206 | 206 | 206 | 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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