Port Isaac Surf Break

Lat Long: 50.59° N 4.84° W

Port Isaac Surf Forecast and Surf Report

Issued: 6 pm 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Port Isaac sea temperature is
18.0°C
1.6° 

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 6 Sep 2026:

  • Best quality surf: Sunday 6 Sep, 4AM (local time) - 2.5ft (0.7m), 9s period, W swell with offshore winds.
  • Most powerful swell: Monday 7 Sep, 10AM (local time) - 6ft (1.9m), 13s period, W swell with 1,237 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 4AM (local time) - 2.5ft (0.7m), 9s 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 Sunday (Sep 06) at 4AM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.1m and 13s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Port Isaac in the next 16 days are 1.9m 13s and forecast to arrive on Monday (Sep 07) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Sunday (Sep 06) at 1PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sun 6th Sep)2.5ft (0.7m) 9s
Best Surf 4AM (Sun 6th Sep)2.5ft (0.7m) 9s
Most Powerful10AM (Mon 7th Sep)6ft (1.9m) 13s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s coming up for our little corner of the coast.

Right then, straight off the bat, I’ve got to be honest with you – the next couple of weeks are looking pretty grim for Port Isaac. We’ve got a real flat spell on our hands. The first week is basically a write-off, and the second week isn’t much better. It’s one of those stretches where you’re better off fixing the dings in the shed.

The heartbreaker is Monday the 7th of September. There’s a big pulse of west swell pushing in, with a solid long period of 13 seconds. We’re talking about 6ft of swell from the west, with a combined energy of 1237 (moderate wave energy). That’s got the right ingredients for a good wave, but the wind is a cross-onshore from the WNW at 12 mph, and the wave comment says “poor surf conditions.” The wind will just chop it up. It’s the biggest swell of the whole forecast, but the wind is cruel. That same west groundswell holds through Tuesday morning, still 6ft, but the wind is cross-onshore again, so it’s a no-go.

The real kicker is that Port Isaac is a fairly exposed spot, and it likes a WNW swell direction – which we get a sniff of on Wednesday the 9th, but that’s a short-period 5ft swell with a nasty cross-onshore wind. No good.

We don’t get a single “good” surf day in the whole 16-day window. The closest we get is Thursday the 10th, with a light cross-offshore wind from the SW, but the swell is a weak 3ft to 4ft. The wave comment says “surfable waves but very ordinary conditions.” That’s about as positive as it gets. There’s also a little window on Thursday the 17th and Friday the 18th where we get some clean, glassy conditions with a light cross-offshore wind, but again, the swell is tiny – 5ft from the WNW on the 17th morning, but with a short 7-second period, and 4ft on the 18th. It’s barely enough to get the kids on a foamie.

The water temperature is sitting at 64°F, which is a touch warmer than normal for this time of year. Not a game-changer for the surf, but you might not need the 5/4 for a while.

So, what’s the best on offer? Honestly, the standout is the morning of Thursday the 17th of September. The swell is 5ft from the WNW, the wind is a light cross-offshore from the SE at 3 mph, and it’s clean. The combined energy is 220 (moderate wave energy). It’s still not a classic, but it’s the cleanest, most rideable wave in a very bleak forecast. The other small window is the morning of Friday the 18th, with glassy conditions and a 4ft swell, but it’s only 6 seconds of period, so it’ll be a bit fat and weak.

We’ve got a long gap of no real surf from now until the 10th, and then again from the 11th to the 17th. It’s a tough run. With mostly onshore winds and weak swell, this setup looks more interesting for a kite surfer than a paddle surfer on most days.

Keep your chin up, lads. It tends not to stay this poor for too long around here. Forecasts can change, and we might get a late-season pulse. For now, it’s a waiting game.

Rusty.

Short Range Forecast

Light rain (total 5mm), mostly falling on Mon night. Warm (max 22°C on Sun morning, min 14°C on Mon night). Winds increasing (calm on Sat afternoon, fresh winds from the SW by Mon night).

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Thu night. Very mild (max 18°C on Thu morning, min 14°C on Tue night). Winds increasing (light winds from the SW on Wed night, fresh winds from the NW by Fri morning).

Sat
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
0
0
1
0
0
1
0
0
0
0
0
1
1
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)
1
W
10
0.8
W
10
0.7
W
9
0.6
W
9
0.5
W
16
1.9
W
13
1.8
W
13
1.8
W
11
1.7
W
9
1.6
W
9
1.7
WNW
7
1.5
WNW
7
1
W
7
0.8
W
8
0.8
W
7
1.1
W
6
1.5
W
8
1.3
W
9
1.5
W
8
1.3
W
7
Wave Graph
Metric surfscale
Energy kJ
202
118
78
56
129
1237
1041
783
481
430
293
225
97
78
67
104
309
262
324
183
Wind (km/h)
10
W
10
SSE
30
SSE
20
SSW
15
SW
20
WNW
25
WSW
25
SW
25
WNW
30
WNW
30
NW
25
NW
20
WNW
5
SW
15
SW
25
SW
25
SSW
30
WNW
30
NW
15
WNW
Wind State
cross
off
off
cross-off
cross-off
cross-on
cross
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
cross-on
High Tide
00:50AM5.11m
1:36PM5.17m
2:28AM5.14m
3:07PM5.46m
3:48AM5.54m
4:16PM6.01m
4:46AM6.07m
5:08PM6.58m
5:33AM6.55m
5:52PM7.03m
6:14AM6.92m
6:32PM7.31m
Low Tide
6:30PM1.98m
7:19AM2.14m
8:17PM1.99m
8:59AM1.96m
9:44PM1.59m
10:12AM1.47m
10:45PM1.04m
11:05AM0.94m
11:34PM0.53m
11:50AM0.48m
00:15AM0.17m
12:29PM0.16m
00:52AM-0.02m
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
rain showers
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
rain showers
rain showers
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:39
6:41
6:43
6:43
6:46
6:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:55
7:53
7:52
7:50
7:47
7:45
7:43
 mm
5
2
1
Temp °C
17
16
22
22
18
17
17
16
16
16
15
15
16
16
18
18
17
17
16
16
Feels °C
15
15
18
19
18
14
12
12
10
10
10
10
11
13
14
14
14
13
11
13
  • 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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