Port Isaac Surf Break

Lat Long: 50.59° N 4.84° W

Port Isaac Surf Forecast and Surf Report

Issued: 6 am 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Port Isaac sea temperature is
18.2°C
2.1° 

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


Port Isaac surf forecast from 10 Sep 2026:

  • Best quality surf: Friday 11 Sep, 1AM (local time) - 5.5ft (1.7m), 10s period, W swell with cross-offshore winds.
  • Most powerful swell: Thursday 10 Sep, 10PM (local time) - 6ft (1.9m), 9s period, W swell with 625 kJ wave energy.
  • Next surfable swell (1★+): Friday 11 Sep, 1AM (local time) - 5.5ft (1.7m), 10s period with W swell.

Best Forecast Surf Conditions for Port Isaac this week:

The surf forecast for Port Isaac over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 11) at 1AM. The primary swell is predicted to be 1.7m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Port Isaac in the next 16 days are 1.9m 9s and forecast to arrive on Thursday (Sep 10) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Fri 11th Sep)5.5ft (1.7m) 10s
Best Surf 1AM (Fri 11th Sep)5.5ft (1.7m) 10s
Most Powerful10PM (Thu 10th Sep)6ft (1.9m) 9s

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


The Lowdown

Alright, grab your cuppa and listen up, it’s Rusty.

Well folks, I’ll be straight with you – this 16-day window for Port Isaac is a tough one. The first week and a half is mostly a write-off for any decent paddle surfing, and it’s not until the very end of the run that we get a proper pulse of energy. Let’s break it down.

From this Thursday morning all the way through to Wednesday the 24th of September, it’s a grim run. We’ve got days on end of either fresh onshore winds or weak, gutless swell. Thursday the 10th kicks off with a meagre 2 ft of west swell at a short period of 5 seconds, and all that combined energy is only a pathetic 36 – that’s barely enough to ruffle the surface. The water is sitting at 65°F which is *much warmer than normal* for this time of year, which is a weird little fact, but it doesn’t help the surf. Friday through the weekend sees some slightly bigger bumps, up to 5 ft, but the wind is constantly cross-on or cross-off and the periods stay short. The energy values on Saturday afternoon hit 223 (moderate), but with a period of just 7 seconds and a moderate breeze, it’s just messy, chop-infested slop. You’d be better off with a kite than a paddle out there for much of this first week.

There’s a small glimmer on Monday the 14th morning, with some clean-looking conditions and a weak 3 ft swell, but the energy is only 101, and the wave comment calls it “surfable waves but very ordinary conditions.” It’s a definite “could-go-for-a-paddle-but-don’t-expect-much” kind of day. Then it’s back into the doldrums. The whole stretch from the 15th to the 23rd is a boring parade of poor conditions with onshore winds, tiny heights, and low energy. You’re looking at a solid 12-day gap where there is really nothing worth recommending.

But hold on. The reward for lasting through the drought is a real cracker. On Thursday the 24th of September, it all comes together. The morning shows a solid 8 ft west-northwest swell coming in with a light offshore wind from the south at only 6 mph. The combined energy is a strong 709, and it’s forecast to be “very good surf conditions.” Then the afternoon gets even better: the swell jumps to a powerful 10 ft, the wind goes glassy from the west-northwest, and the energy rockets up to a huge 1315 – that’s serious power. The period is 9 seconds, a nice groundswell offering good shape. This is the standout session of the whole 16 days. Keep in mind, at 10 ft this is going to be heavy and definitely only for experienced surfers, but if you’re an expert who knows Port Isaac, that Thursday afternoon is the one to circle. It’s clean, powerful, and glassy – a proper treat after all that mess.

Friday the 25th holds some clean, surfable leftovers in the morning – 7 ft from the west with a light offshore – but the energy drops to 986, and the tide conditions look a bit questionable. It’s still a solid option compared to everything else, but it’s second best to the Thursday afternoon blast.

So, the long and short of it: Wait it out for a couple of weeks. There’s nothing happening until that Thursday the 24th. When it arrives, it’s the real deal – just be ready for the power.

- Rusty

Short Range Forecast

Moderate rain (total 16mm), heaviest on Sat night. Very mild (max 19°C on Sat morning, min 15°C on Fri night). Winds decreasing (fresh winds from the SW on Thu morning, light winds from the W by Fri afternoon).

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Tue morning. Warm (max 21°C on Mon morning, min 15°C on Tue night). Wind will be generally light.

Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
2
0
0
1
0
0
0
0
0
1
1
0
1
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
W
5
1.6
W
8
1.7
W
10
1.3
W
10
1.1
W
9
0.9
W
8
1.1
W
8
1.5
W
7
1.6
W
8
1.3
W
10
1.1
W
10
0.9
W
9
0.8
W
9
0.8
W
9
0.7
W
8
1
W
8
1.5
WNW
7
1.6
W
8
1.5
W
10
1.3
W
10
1
W
10
Wave Graph
Metric surfscale
Energy kJ
13
287
533
301
188
107
169
223
307
320
228
140
101
99
66
119
198
349
414
353
218
Wind (km/h)
30
SSW
30
SW
10
SW
10
NW
10
WNW
15
SW
25
SW
25
WSW
25
WSW
15
WNW
15
W
10
SW
15
SSW
15
WSW
20
SSE
15
WNW
30
WNW
20
NNW
25
N
25
NNW
5
NW
Wind State
cross-off
cross-off
cross-off
cross-on
cross-on
cross-off
cross-off
cross-off
cross
cross-on
cross-on
cross-off
cross-off
cross
off
cross-on
cross-on
on
on
on
on
High Tide
5:52PM7.03m
6:14AM6.92m
6:32PM7.31m
6:52AM7.12m
7:09PM7.38m
7:28AM7.14m
7:45PM7.26m
8:02AM7.00m
8:19PM6.96m
8:36AM6.71m
8:53PM6.53m
9:09AM6.30m
9:28PM6.02m
Low Tide
11:50AM0.48m
00:15AM0.17m
12:29PM0.16m
00:52AM-0.02m
1:05PM0.03m
1:26AM-0.02m
1:40PM0.07m
1:59AM0.15m
2:13PM0.27m
2:30AM0.46m
2:45PM0.61m
3:01AM0.87m
3:18PM1.04m
3:33AM1.35m
part cloud
light rain
rain showers
clear
clear
clear
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
clear
rain showers
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:46
6:47
6:48
6:50
6:52
6:52
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:45
7:43
7:40
7:38
7:36
7:34
7:31
 mm
1
1
14
1
3
Temp °C
18
17
17
18
18
15
19
19
18
17
17
17
21
21
18
17
17
16
15
15
15
Feels °C
13
12
16
17
17
15
15
15
15
17
17
17
21
21
18
16
12
14
10
10
12
  • Map Icons:
  • Break
  • 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 Port Isaac Surf forecast

The above surf forecast table for Port Isaac provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Port Isaac can be found by selecting the local surf guide option on the grey menu. Our Port Isaac 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 (Port Isaac) 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 Port Isaac 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.

Are you planning a holiday in North Cornwall? If you are looking for accommodation near Port Isaac, camping, hotels and holiday cottages in North Cornwall, consider staying in Padstow which is 8 km (5 miles) away. Other places in and around North Cornwall where you can find information about places to rent, and car hire include Bodmin which is 15 km (9 miles) away, Newquay, Par and Saint Austell.

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