Port Isaac Surf Break

Lat Long: 50.59° N 4.84° W

Port Isaac Surf Forecast and Surf Report

Issued: 12 pm 27 Aug 2026 (local time)

Forecast update in  hr  min

Today's Port Isaac sea temperature is
18.7°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 27 Aug 2026:

  • Best quality surf: Sunday 30 Aug, 4AM (local time) - 5.5ft (1.7m), 8s period, W swell with cross-offshore winds.
  • Most powerful swell: Monday 31 Aug, 4AM (local time) - 8ft (2.5m), 10s period, W swell with 1,275 kJ wave energy.
  • Next surfable swell (1★+): Sunday 30 Aug, 4AM (local time) - 5.5ft (1.7m), 8s 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 (Aug 30) at 4AM. The primary swell is predicted to be 1.7m and 8s 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 2.5m 10s and forecast to arrive on Monday (Aug 31) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Saturday (Aug 29) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sun 30th Aug)5.5ft (1.7m) 8s
Best Surf 4AM (Sun 30th Aug)5.5ft (1.7m) 8s
Most Powerful 4AM (Mon 31st Aug)8ft (2.5m) 10s

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


The Lowdown

Alright folks, Rusty here. Let’s break down what Port Isaac has cooking for us over the next couple of weeks. I’ll be honest, it’s a rough patch ahead. The wind and swell just aren’t shaking hands, and it’s going to test your patience.

First thing, the water temp is sitting at a warm 66°F, which is much warmer than usual for this time of year. Nice bonus, but it’s about the only easy thing we’ve got going.

We’re looking at a gap of over a week with nothing worth paddling out for. From Thursday the 27th of August right through to the morning of Saturday the 5th of September, every session is rated as poor. The winds are mostly cross or cross-off, but the swell is tiny, weak, or just messy. There’s a bit of a pulse on the 28th and 29th with some 5ft swell, but the wind is screaming at 25-28 mph, making it a complete mess. The combined energy on the 30th afternoon hits 388 (moderate), but it’s tied to a risk of thunderstorms and strong wind, so not your friend.

Now, there’s a flicker of hope. On the morning of Wednesday the 9th of September, we finally get a proper window. The wind swings to a clean offshore from the South at 16 mph. The swell is only 3ft from the West with a 10-second period, and the combined energy is a moderate 298. It’s not going to be huge, but with offshore wind, that will be the cleanest surf we’ve seen in ages. For a beginner-friendly spot like Port Isaac that’s fairly consistent, this is your best bet. The swell direction (W) matches the optimum (WNW) pretty well. It’s the standout in a barren forecast, though keep in mind it’s over a week away, so don’t book the trip just yet.

Before that, on the morning of Monday the 7th of September, we see a 7ft West swell with a gentle cross-off breeze. That’s a decent size, but the combined energy is a strong 572 and the period is short at 8 seconds. For a beach setup, that short period will make for a bumpy ride, but it’s a possible backup if the wind holds. Crowds are sometimes an issue here, so if it’s looking good, expect company.

After that Wednesday morning window, the forecast drops back into poor conditions. The wind picks up again, and the swell fades. The 10th and 11th of September are small and choppy, so don’t get your hopes up for a long run of good waves.

Honestly, this is a tough one. We’ve got a solid 10 days of mostly junk before that one promising Wednesday morning. Keep your eyes on that date, but be ready for the forecast to shift. It’s a lean stretch, but that’s the coast sometimes.

Rusty.

Short Range Forecast

Heavy rain (total 25mm), heaviest during Fri morning. Warm (max 20°C on Thu morning, min 15°C on Fri night). Winds increasing (light winds from the SW on Thu morning, strong winds from the W by Sat afternoon).

Days 4-6 Weather Summary

Moderate rain (total 11mm), heaviest on Sun afternoon. Very mild (max 19°C on Sun morning, min 15°C on Mon night). Winds decreasing (fresh winds from the SW on Sun morning, light winds from the NW by Tue night).

Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
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
0
0
0
0
0
0
0
1
0
0
0
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)
0.3
W
7
0.3
W
8
0.4
W
8
1.3
WSW
6
1.6
W
6
0.9
W
6
1
WSW
7
1.6
W
8
1.8
W
9
1.4
W
9
1.6
WSW
9
2.5
W
9
2.2
W
10
1.8
W
10
1.6
W
10
1.3
WNW
9
1.1
W
9
0.9
WNW
8
0.5
W
8
0.7
W
5
0.9
W
6
Wave Graph
Metric surfscale
Energy kJ
10
12
22
109
220
56
91
343
492
320
388
1021
1035
656
470
276
186
107
31
23
50
Wind (km/h)
15
SSW
15
SW
15
SW
40
WSW
30
WSW
25
SSW
45
SSW
45
W
25
WSW
20
SSW
35
SW
35
W
25
WNW
25
W
15
WSW
20
W
25
WSW
20
WNW
10
NW
15
WSW
25
SSW
Wind State
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-on
cross-on
cross-on
cross
cross
cross
cross-on
cross-on
cross
cross-off
High Tide
6:11PM6.48m
6:28AM6.43m
6:43PM6.82m
7:00AM6.71m
7:15PM7.05m
7:32AM6.88m
7:48PM7.14m
8:06AM6.92m
8:22PM7.07m
8:41AM6.82m
8:59PM6.85m
9:19AM6.57m
9:39PM6.48m
Low Tide
12:07PM0.94m
00:28AM0.71m
12:39PM0.61m
00:59AM0.42m
1:10PM0.38m
1:30AM0.25m
1:42PM0.26m
2:02AM0.21m
2:14PM0.28m
2:34AM0.32m
2:48PM0.44m
3:09AM0.57m
3:26PM0.73m
3:49AM0.95m
part cloud
thunderstorm
part cloud
heavy rain
rain showers
rain showers
rain showers
rain showers
part cloud
light rain
thunderstorm
thunderstorm
cloud
cloud
part cloud
rain showers
cloud
rain showers
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:26
6:26
6:28
6:30
6:31
6:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:15
8:14
8:10
8:08
8:07
8:05
8:02
 mm
1
11
3
6
2
2
1
4
3
1
2
Temp °C
20
20
17
17
18
18
18
18
17
19
17
16
17
17
16
18
18
17
17
18
18
Feels °C
19
19
16
12
14
15
12
11
13
13
12
10
13
13
13
15
14
14
15
17
14
  • 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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