Porsmilin Surf Break

Lat Long: 48.36° N 4.68° W

Porsmilin Surf Forecast and Surf Report

Issued: 7 am 16 Sep 2026 (local time)

Forecast update in  hr  min

Today's Porsmilin sea temperature is
17.4°C
0.5° 

Porsmilin surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Porsmilin surf forecast from 16 Sep 2026:

  • Best quality surf: Tuesday 22 Sep, 5PM (local time) - 5ft (1.5m), 18s period, W swell with offshore winds.
  • Most powerful swell: Friday 18 Sep, 8AM (local time) - 8ft (2.5m), 13s period, WNW swell with 2,421 kJ wave energy.
  • Next surfable swell (1★+): Sunday 20 Sep, 8AM (local time) - 5.5ft (1.7m), 11s 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 Sunday (Sep 20) at 8AM. The primary swell is predicted to be 1.7m and 11s period with a secondary swell of 0.1m and 14s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Porsmilin in the next 16 days are 2.5m 13s and forecast to arrive on Friday (Sep 18) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Sep 21) at 8PM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Sun 20th Sep)5.5ft (1.7m) 11s
Best Surf 5PM (Tue 22nd Sep)5ft (1.5m) 18s
Most Powerful 8AM (Fri 18th Sep)8ft (2.5m) 13s

Table - best surf conditions forecast for Porsmilin over the next 16 days.


The Lowdown

Alright, let’s get into it. The forecast starts a bit shaky, but there’s some real potential hiding in there, especially if you’re willing to wait it out.

Right off the bat, we’ve got some swell on the way, but the winds are messing with us. Wednesday morning sees a clean 8ft from the WNW with a 10-second period, but that cross-off breeze is making things a bit tricky. The afternoon stays similar at 8ft, but the overall energy is building. It’s rideable, sure, but nothing to write home about just yet.

Thursday turns ugly—cross-on winds, choppy conditions, and the swell drops off. This one’s a write-off. Friday picks the size back up to 8ft, but it’s messy with a long-period groundswell and cross-on winds, so it’s going to be lumpy and hard to manage. Saturday is more of the same: 6ft but choppy.

Now, here’s where things start to turn around. Sunday morning, the wind goes completely glassy and we’ve got a clean 6ft from the WNW. That’s the first real window of opportunity. The water’s sitting at 63°, which is right around average for this time of year, so nothing wild there. That morning session is going to be worth it—clean lines, some push, and nobody around.

Monday keeps things clean with a 5ft morning and then proper offshore winds in the afternoon, 4ft, and a 12-second period. It’s small but fun, the kind of day you grab a log for.

Tuesday is where it starts to get interesting. The morning is clean at 4ft, but the afternoon is the standout of the first week: 5ft, but with an 18-second period and full offshore winds. That’s a long-period groundswell, and Porsmilin is a sandbar, so it might be a bit straight, but with that much push and clean conditions, it’s going to be a lot of fun for the experienced crew.

Wednesday brings a bit more size—7ft in the morning, dropping to 6ft in the afternoon—but the wind is up and it’s cross-off, so it’s clean but a bit more challenging. Thursday is a down day, small at 4ft and then dropping.

But hold on. Friday afternoon is where the magic happens. The wind goes offshore, the swell jumps back to 5ft, but the period is 16 seconds and the energy is building strong. That’s a proper groundswell, and it’s going to be glassy.

Saturday stays clean with a 5ft morning and a proper offshore afternoon at 5ft, 13 seconds. That’s consistent, clean surf. Two days in a row of genuinely good conditions.

Then we hit a bit of a lull early next week. Sunday and Monday are small—dropping to under 3ft—and the energy fades.

But here’s the big one, and it’s a fair way off: Wednesday the 30th. The forecast shows a massive 18ft from the west with a 12-second period, and the energy reading is off the charts. That’s a huge, powerful swell. But, and this is important, it’s predicted to be too big for this break. The winds are cross-off and the tide is favorable, but Porsmilin is going to be overwhelmed. That’s one for the experts only, and even then, it’s a “look but don’t jump” kind of day. The afternoon drops to 12ft, still huge, and the period drops to 9 seconds, so it’s going to be lumpy and raw.

After that, Thursday the 1st of October has some leftover energy at 8ft, dropping to 6ft, but the period is short—8 seconds—so it’s going to be windswell, not the clean groundswell we want.

So, the standout windows here are Sunday the 20th morning for clean, glassy waves, and then that Tuesday afternoon the 22nd with that long-period, offshore goodness. That Friday the 25th afternoon and Saturday the 26th are also solid, consistent runs of clean surf.

For the second week, the long-range stuff on the 30th is promising but way too big for this spot, so I’d temper expectations there. The early part of that week is small and clean, so it’s more of a longboard day.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Thu afternoon. Very mild (max 17°C on Wed afternoon, min 15°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Mon afternoon, min 17°C on Sat morning). Wind will be generally light.

Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
3
1
0
1
2
2
0
0
0
0
2
3
2
2
2
2
1
2
4
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.4
WNW
10
2.3
WNW
11
1.8
WNW
11
1.8
WNW
10
2
WNW
9
2.2
WNW
10
2.5
WNW
13
2.4
WNW
13
2
WNW
12
1.9
WNW
12
1.9
WNW
11
1.9
WNW
11
1.7
WNW
11
1.7
WNW
11
1.7
WNW
11
1.4
WNW
11
1.3
WNW
12
1.3
WNW
12
1.2
WNW
11
1.5
W
18
2
W
15
Wave Graph
Metric surfscale
Energy kJ
1122
1260
759
625
630
1000
2369
1949
1170
947
868
822
672
711
662
513
483
414
346
1375
1934
Wind (km/h)
20
NNW
20
NNW
20
W
25
WSW
25
NW
15
NW
15
W
20
WSW
20
WSW
20
SW
15
WSW
10
W
0
SSW
15
NNW
15
NE
15
ENE
15
N
20
ENE
15
E
20
NNE
25
ENE
Wind State
cross-off
cross-off
cross
cross-on
cross-off
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
cross-off
cross-off
cross-off
off
cross-off
cross-off
off
cross-off
High Tide
8:41AM5.30m
8:59PM5.03m
9:15AM4.88m
9:35PM4.56m
9:54AM4.44m
10:20PM4.10m
10:49AM4.02m
11:36PM3.73m
12:33PM3.78m
1:46AM3.69m
2:26PM3.95m
3:07AM4.00m
3:26PM4.34m
3:53AM4.42m
Low Tide
3:04PM0.97m
3:20AM1.24m
3:41PM1.40m
3:58AM1.68m
4:27PM1.84m
4:49AM2.09m
5:33PM2.19m
6:10AM2.36m
7:13PM2.32m
7:55AM2.33m
8:47PM2.09m
9:12AM2.02m
9:46PM1.68m
clear
part cloud
part cloud
part cloud
rain showers
part cloud
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:56
7:56
7:58
8:00
8:00
8:02
8:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:30
8:28
8:25
8:23
8:22
8:20
8:16
 mm
1
Temp °C
16
17
16
17
17
17
16
16
16
17
18
18
17
19
18
18
23
22
20
25
21
Feels °C
12
13
14
13
14
13
14
13
13
15
17
18
19
18
17
17
21
19
17
21
16
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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