Surf Forecasts:
Porsmilin surf forecast from 17 Aug 2026:
- Best quality surf: Thursday 20 Aug, 11PM (local time) - 7ft (2.1m), 10s period, WNW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 11AM (local time) - 7ft (2.2m), 10s period, WNW swell with 887 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 11AM (local time) - 4.5ft (1.3m), 10s 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 11AM. The primary swell is predicted to be 1.3m and 10s period with a secondary swell of 0.1m and 16s. 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 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Aug 23) at 8PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Wed 19th Aug) | 4.5ft (1.3m) 10s |
| Best Surf | 11PM (Thu 20th Aug) | 7ft (2.1m) 10s |
| Most Powerful | 11AM (Thu 20th Aug) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Porsmilin over the next 16 days.
The Lowdown
Alright folks, Rusty here. We’ve got a single spot on the radar for this 16-day run: Porsmilin. Let’s break it down.
The opening stretch is a bit of a write-off. Tuesday the 18th is a non-starter with small, weak, cross-on wind chop. Hang tight, because the real window opens up Wednesday morning, the 19th. That’s the standout. We’re looking at a glassy, calm morning with a solid 4ft groundswell rolling in from the WNW. The swell period is a proper 10 seconds, and the combined energy is moderate (302). The water temperature is about average for the time of year, nothing weird. It’s small enough for intermediates but will have some push. That glassy wind is a major positive—clean faces for the taking.
Wednesday afternoon, the wind goes cross-shore and the swell bumps up to 5ft, but the energy goes strong (509) and the breeze starts to crinkle the surface. Thursday the 20th sees the swell pushing 7ft in the morning with strong energy (895), but it’s a messy cross-shore wind. That’s getting into the range where beginners will struggle. The weekend from the 22nd onwards drops off hard. The swell fades to 2ft and under, even with offshore winds, it’s just too small to get excited about. There’s a long gap of poor conditions from the 22nd right through to the 26th.
We get a little bump around the 27th with 4ft WNW swell, but the wind is messy and the period is a short 7 seconds, so the quality won’t be there. The very end of the run, on the 1st of September, brings a big pulse: 10ft WNW swell with a very long 12-second period from a groundswell. The energy is strong (2383), but the wind is onshore, and that size is only for experts. This is a promising but less certain long-range possibility.
Best bet: hit the Wednesday morning, 19th of August, at Porsmilin. It’s not a big session, but it will be clean and fun.
Rusty.
Short Range ForecastModerate rain (total 17mm), heaviest on Wed morning. Warm (max 20°C on Tue afternoon, min 15°C on Wed morning). Winds increasing (calm on Wed morning, fresh winds from the W by Wed night). | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Sat afternoon, min 15°C on Fri night). Winds increasing (light winds from the NW on Fri morning, fresh winds from the NE by Sat night). | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 7 | WNW 6 | NW 6 | WNW 6 | WNW 10 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 8 | W 10 | W 10 | NW 7 | W 9 | W 9 | NW 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 77 | 32 | 28 | 69 | 284 | 499 | 603 | 887 | 768 | 692 | 363 | 222 | 93 | 65 | 28 | 38 | 14 | 14 | 8 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | glassy | cross | cross-on | cross | cross | cross-off | cross | cross | cross-off | off | off | cross-off | off | off | off |
High Tide | 9:03PM5.53m | 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 | ||||||
Low Tide | 3:27AM0.74m | 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 | |||||||
 |  |  |  |  |  |  | | | | | | | | | | | | | |
 | — | 7:15 | — | — | 7:16 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — |
 | 9:30 | — | — | 9:28 | — | — | 9:25 | — | — | 9:23 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 |
mm | — | — | — | — | 13 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 19 | 20 | 19 | 16 | 18 | 18 | 18 | 19 | 18 | 17 | 17 | 17 | 16 | 20 | 18 | 17 | 18 | 17 |
Feels °C | 18 | 19 | 20 | 19 | 16 | 17 | 14 | 14 | 16 | 16 | 16 | 15 | 15 | 14 | 15 | 12 | 13 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 7 | WNW 6 | NW 6 | W 8 | WNW 10 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 8 | NW 7 | NW 7 | NW 7 | NNW 6 | NW 6 | NW 6 |
| kJ | 77 | 32 | 28 | 18 | 284 | 499 | 603 | 887 | 768 | 692 | 363 | 222 | 93 | 47 | 24 | 38 | 22 | 10 | 6 |
Swell 2 Height (m) Direction Period (s) | SW 16 | WNW 8 | W 8 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | W 8 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 |
| kJ | 10 | 21 | 11 | 11 | 9 | 10 | 8 | 8 | 8 | 7 | 7 | 7 | 35 | 65 | 28 | 25 | 14 | 14 | 5 |
Swell 3 Height (m) Direction Period (s) | — | SW 17 | SW 17 | SW 17 | SW 15 | — | — | — | — | — | SW 16 | SW 16 | SW 15 | SW 15 | NNW 6 | SW 14 | SW 14 | SW 14 | SW 14 |
| kJ | — | 11 | 11 | 11 | 9 | — | — | — | — | — | 10 | 10 | 9 | 9 | 6 | 8 | 8 | 8 | 8 |
Wind waves Height (m) Direction Period (s) | — | — | W 6 | WNW 6 | — | — | — | — | WNW 10 | — | — | — | — | — | NE 4 | NE 3 | NE 3 | NNE 4 | N 3 |
| kJ | — | — | 21 | 69 | — | — | — | — | 563 | — | — | — | — | — | 8 | 3 | 3 | 16 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 2 | 68 | 497 | 2 | 0 | 2 | 84 | 365 | 359 | 0 | 2 | 2 | 0 | 0 | 39 | 4 | 325 | 200 | 201 |
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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