Port Isaac Surf Break

Lat Long: 50.59° N 4.84° W

Port Isaac Surf Forecast and Surf Report

Issued: 12 am 07 Sep 2026 (local time)

Forecast update in  hr  min

Today's Port Isaac sea temperature is
18.1°C
1.8° 

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 7 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 4AM (local time) - 6ft (1.9m), 10s period, W swell with cross-offshore winds.
  • Most powerful swell: Monday 7 Sep, 7AM (local time) - 6ft (1.8m), 14s period, W swell with 1,321 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 4AM (local time) - 6ft (1.9m), 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 Tuesday (Sep 08) at 4AM. The primary swell is predicted to be 1.9m 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 1.8m 14s and forecast to arrive on Monday (Sep 07) at 7AM. 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 Saturday (Sep 12) at 10AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Tue 8th Sep)6ft (1.9m) 10s
Best Surf 4AM (Tue 8th Sep)6ft (1.9m) 10s
Most Powerful 7AM (Mon 7th Sep)6ft (1.8m) 14s

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 cooking for Port Isaac over the next couple of weeks.

We’re in for a real mixed bag, and to be honest, the first week is a bit of a write-off. The surf window doesn’t really open until about a week in, so we’ve got a long gap of nothing much to get excited about. The water is sitting at 65°, which is a touch warmer than normal for this time of year, so that’s a small comfort while you’re waiting.

The first real chance of a proper surf comes on Thursday, 17th September. The morning is looking like the pick of the entire forecast. We’ve got a solid 8ft swell rolling in from the west with a 10-second period, pushing a combined wave energy of 964 (moderate). That’s a good, powerful groundswell. The wind is light and offshore from the SSW, so the waves at Port Isaac should be clean and lined up. This is a standout for the confident surfers – it’s a bit too big for beginners, but for everyone else, that’s a session to circle on the calendar. The afternoon drops off a bit as the wind swings cross-shore, so get it early.

Then, on Friday, 18th September, the swell really starts to pump. The afternoon sees a chunky 10ft west swell with a 9-second period, and the combined energy is a massive 1487 (strong). That’s serious power. The wind is a moderate cross-shore, so it’ll be a bit lumpy, but for the experienced crew looking for a big, heavy wave, this is your ticket. It’s strictly for experts at that size.

The rest of the period is either too small, too windy, or just plain messy. There’s a brief window on the morning of 16th September with 8ft swell, but the onshore wind and cross-chop make it a tough prospect. We’ll call it a marginal one.

So, to wrap it up: the first week is a dud. The real action is all on the 17th and 18th of September. Thursday morning is the cleanest, best-shaped option, and Friday afternoon is for the big-wave hunters. Don’t hold your breath for anything else.

Rusty.

Short Range Forecast

Moderate rain (total 18mm), heaviest on Mon night. Very mild (max 18°C on Sun night, min 14°C on Mon night). Winds decreasing (fresh winds from the NW on Tue morning, light winds from the WNW by Wed afternoon).

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Thu night. Very mild (max 19°C on Sat morning, min 14°C on Wed night). Wind will be generally light.

Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
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
1
2
0
0
0
0
0
1
0
0
1
0
0
0
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
W
13
1.7
W
13
1.9
W
11
1.8
W
9
1.9
WNW
9
2.1
WNW
8
1.5
W
8
1.1
W
8
0.8
W
8
0.6
W
8
0.7
WSW
5
1.6
W
8
1.3
W
9
1.1
W
8
0.7
W
8
0.7
W
8
1.5
W
7
1.4
W
8
1.1
W
8
0.9
W
8
0.8
W
8
Wave Graph
Metric surfscale
Energy kJ
1237
928
890
553
554
534
273
161
80
45
27
329
264
167
60
65
226
229
160
112
92
Wind (km/h)
25
WNW
25
WSW
20
SW
30
NW
35
NW
30
NW
20
NW
15
WNW
10
SSW
15
SW
25
SW
25
SW
15
WNW
10
NW
5
WSW
20
SSW
30
SW
25
SW
20
WSW
20
WSW
15
SSW
Wind State
cross-on
cross
cross-off
on
cross-on
cross-on
on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
glassy
cross-off
cross-off
cross-off
cross
cross
cross-off
High Tide
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
6:52AM7.12m
7:09PM7.38m
7:28AM7.14m
7:45PM7.26m
Low Tide
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
1:05PM0.03m
1:26AM-0.02m
1:40PM0.07m
1:59AM0.15m
part cloud
cloud
heavy rain
rain showers
part cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
rain showers
part cloud
clear
clear
part cloud
light rain
light rain
part cloud
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:41
6:43
6:43
6:46
6:47
6:48
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:52
7:50
7:47
7:45
7:43
7:40
7:38
 mm
16
2
2
1
2
2
Temp °C
17
17
16
16
16
16
15
15
15
17
17
17
18
18
16
19
19
18
18
18
19
Feels °C
13
13
12
9
9
10
10
12
13
13
13
15
17
17
16
14
15
16
17
16
19
  • 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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