
Surf Forecasts:
Port Isaac surf forecast from 11 Sep 2026:
- Best quality surf: Friday 11 Sep, 10PM (local time) - 3.5ft (1.0m), 8s period, W swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 10AM (local time) - 5.5ft (1.7m), 10s period, W swell with 552 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 10PM (local time) - 3.5ft (1.0m), 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 Friday (Sep 11) at 10PM. The primary swell is predicted to be 1.0m and 8s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Port Isaac in the next 16 days are 1.7m 10s and forecast to arrive on Wednesday (Sep 16) at 10AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Tuesday (Sep 15) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Fri 11th Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 10PM (Fri 11th Sep) | 3.5ft (1.0m) 8s |
| Most Powerful | 10AM (Wed 16th Sep) | 5.5ft (1.7m) 10s |
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 on the cards for the North Cornwall coast, focusing on Port Isaac. It’s a bit of a slow start, but there’s some serious promise further down the line.
The opening stretch is tough. From Friday the 11th through to Sunday the 20th of September, it's pretty much a write-off for a proper paddle. We’ve got onshore winds and lumpy, messy conditions ruining what little swell there is. For an entire week and a half, scores are a flat zero for most sessions, and the few that aren’t a total write-off are barely worth suiting up for. There’s a brief window on Monday morning the 14th with a weak 3-foot swell from the west, clean but tiny. The combined energy is a meager 127, so you’d be scratching for scraps. The waiting game is the name of it here.
The first true standout arrives later. Keep your eye on Saturday the 19th of September. Afternoon looks the best of that day, with the wind going light and variable, swinging into a cross-offshore breeze. We’re looking at a 6-foot swell rolling in from the WNW, with moderate energy maxing out at 455. This is the moment where it finally cleans up, and those waves should start holding their shape. It’s a beginner-friendly spot at Port Isaac, but with this size, it’ll be a fun one for anyone looking to get some flow in. Wind is slight, conditions should be clean.
But the real standout, the one you’ve got to circle on the calendar if you’ve got the skills, is Wednesday the 23rd of September. Absolute magic. Head down there in the morning. We are talking about a clean 6-foot WNW groundswell with an 8-second period. What makes this special is the wind: dead calm, 0 mph, glassy conditions. Combined energy is chunky at 427. It’s going to be as good as it gets around here, for a session. The water is around average for the time of year, so a 3/2 wetsuit will do you fine.
Now, if you’re an expert, Friday the 25th of September morning also looks good – a clean and glassy 7-foot swell from the west with 576 energy points. Beginners should give that one a miss though, as 7 feet gets a bit spicy. The Friday afternoon, however, pushes up further to 8 feet off a 10-second period, with solid energy at 1390. With onshore winds building, that’s strictly for the experienced heads and could get a bit unruly. Might be a better kite-surfing show than a paddling one.
So, the short version: you wait a week for something decent on the 19th, but the real gold is that Wednesday morning glass-off on the 23rd. Don’t miss it.
Rusty
Short Range ForecastModerate rain (total 14mm), heaviest on Sat night. Very mild (max 19°C on Sat afternoon, min 14°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Mon morning, min 14°C on Wed morning). Winds increasing (light winds from the SW on Sun night, fresh winds from the WNW by Tue morning). | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | W 10 | W 9 | W 8 | W 8 | W 7 | W 8 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | W 8 | WNW 7 | WNW 8 | W 10 | W 10 | WNW 10 | W 10 | W 6 | W 6 |
Wave Graph | |||||||||||||||||||||
301 | 188 | 107 | 165 | 230 | 270 | 379 | 271 | 173 | 127 | 125 | 86 | 148 | 407 | 408 | 552 | 392 | 255 | 70 | 67 | 100 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | off | cross-on | cross-on | on | on | on | cross-on | cross | cross | cross-on |
High Tide | 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 | 9:44AM5.81m | 10:05PM5.47m | |||||||
Low Tide | 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 | 3:53PM1.54m | ||||||||
6:47 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:56 | — | — | |
— | 7:43 | — | — | 7:40 | — | — | 7:38 | — | — | 7:36 | — | — | 7:34 | — | — | 7:31 | — | — | 7:30 | — | |
mm | — | — | — | — | — | 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 16 | 14 | 18 | 19 | 18 | 18 | 18 | 18 | 21 | 21 | 18 | 17 | 16 | 16 | 15 | 15 | 15 | 16 | 17 | 16 |
Feels °C | 16 | 15 | 14 | 14 | 15 | 16 | 17 | 17 | 19 | 21 | 21 | 17 | 13 | 10 | 11 | 10 | 10 | 12 | 12 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 9 | W 8 | W 15 | — | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | — | — | — | W 10 | W 10 | WNW 10 | W 10 | W 10 | W 6 |
301 | 188 | 107 | 4 | — | 100 | 379 | 271 | 173 | 127 | 125 | 86 | — | — | — | 552 | 392 | 255 | 70 | 47 | 100 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | W 12 | — | — | — | — | — | — | — | — | W 9 |
— | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | 43 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 14 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 19 | |
Wind waves Height (m) Direction Period (s) | — | — | — | W 8 | W 7 | W 8 | — | — | — | — | — | — | W 8 | WNW 7 | WNW 8 | NNW 6 | NNW 6 | — | W 6 | W 6 | — |
— | — | — | 165 | 230 | 270 | — | — | — | — | — | — | 148 | 407 | 408 | 64 | 33 | — | 43 | 67 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 38 | 38 | 0 | 14 | 218 | 250 | 26 | 113 | 4 | 0 | 0 | 0 | 780 | 338 | 86 | 784 | 250 | 61 | 288 | 221 | 62 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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.










