Surf Forecasts:
Port Isaac surf forecast from 31 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 10AM (local time) - 3.5ft (1.0m), 9s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 10PM (local time) - 5ft (1.6m), 10s period, W swell with 474 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 10AM (local time) - 3.5ft (1.0m), 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 Tuesday (Sep 01) at 10AM. The primary swell is predicted to be 1.0m and 9s period with a secondary swell of 0.1m and 18s. 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 1.6m 10s and forecast to arrive on Monday (Aug 31) at 10PM. 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 3s period and expected on Sunday (Sep 06) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Tue 1st Sep) | 3.5ft (1.0m) 9s |
| Best Surf | 10AM (Tue 1st Sep) | 3.5ft (1.0m) 9s |
| Most Powerful | 10PM (Mon 31st Aug) | 5ft (1.6m) 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 cooking for Port Isaac over the next couple of weeks.
Right off the bat, I gotta be straight with you – the first week or so is a bit of a write-off. We've got some swell rolling in, but the wind just isn't playing ball. Most of the time it's cross-onshore or just messy, leaving the surf pretty poor. You'll be looking at a lot of choppy, lumpy conditions, so don't bother paddling out until we get a proper shift.
The first real glimmer of hope comes on the morning of Monday, the 8th of September. It's not huge, with a 5ft swell out of the west and a short period of 7 seconds. But the key here is that wind goes glassy. A flat calm morning like that is a rare treat, and even if the waves are ordinary, you'll have a clean, smooth surface to play on. The energy is moderate at 253, so there's a little bit of push. It's a beginner-friendly spot anyway, so it'll be a fun paddle.
Now, if you can wait, the real standout is shaping up for the week after. Look at Monday the 14th of September. We're talking a solid 8ft swell hammering in from the west. The energy jumps right up to a very strong 955. This is proper groundswell territory, with a 9-second period giving it some decent shape. The wind is set to be clean and cross-off in the morning. Now, heads up – 8ft is expert territory, so if you're not confident, sit this one out or watch from the cliffs. For the experienced crew, this could be the session of the run. You'll want to be on it early before the wind swings.
Also worth mentioning is Tuesday the 15th of September. It's a touch smaller at 7ft but still solid, with a longer 11-second period from the west. That longer period means more energy and better-shaped lines, but at a beach break like Port Isaac, it might be a bit straight. Still, with clean offshore winds again in the morning, it's a solid backup option if Monday is too wild. The energy is a massive 917, so you'll feel that power.
For the rest of the time, it's mostly small and wind-affected, so don't hold your breath. But that mid-September window is the real deal.
Stay safe and keep an eye on that swell.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed morning. Warm (max 20°C on Thu morning, min 15°C on Mon night). Winds increasing (light winds from the WSW on Mon night, fresh winds from the WSW by Wed afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Thu afternoon, min 15°C on Fri night). Winds decreasing (fresh winds from the WSW on Thu night, calm by Fri night). | |||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 10 | W 9 | W 9 | W 8 | W 6 | WSW 7 | W 8 | W 8 | W 8 | W 8 | W 8 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 847 | 363 | 157 | 123 | 63 | 37 | 245 | 187 | 227 | 223 | 292 | 454 | 348 | 230 | 127 | 104 | 80 | 57 | 38 | 22 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross | cross-off | cross-off | cross | cross-off | cross | cross-off | cross-off | cross-on | cross-on | on | glassy | glassy | cross-off | off | off | off |
High Tide | 8:22PM7.07m | 8:41AM6.82m | 8:59PM6.85m | 9:19AM6.57m | 9:39PM6.48m | 10:01AM6.20m | 10:27PM6.00m | 10:54AM5.74m | 11:27PM5.48m | 12:03PM5.32m | 00:50AM5.11m | 1:36PM5.17m | 2:28AM5.14m | |||||||
Low Tide | 2:34AM0.32m | 2:48PM0.44m | 3:09AM0.57m | 3:26PM0.73m | 3:49AM0.95m | 4:10PM1.13m | 4:37AM1.42m | 5:08PM1.60m | 5:43AM1.89m | 6:30PM1.98m | 7:19AM2.14m | 8:17PM1.99m | ||||||||
 |  | | | |  | | |  | | | |  |  | | | | | | | |
 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — |
 | 8:07 | — | — | 8:05 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — | — | 7:55 | — | — | 7:53 | — |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 16 | 18 | 18 | 16 | 18 | 19 | 18 | 20 | 20 | 19 | 17 | 17 | 15 | 18 | 19 | 16 | 20 | 21 | 18 |
Feels °C | 12 | 13 | 15 | 14 | 15 | 14 | 15 | 16 | 18 | 17 | 16 | 14 | 14 | 14 | 18 | 19 | 14 | 17 | 19 | 16 |
Swell 1 Height (m) Direction Period (s) | — | W 10 | W 9 | W 18 | W 8 | W 6 | — | W 15 | SW 15 | SW 16 | — | W 8 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 8 |
| kJ | — | 363 | 157 | 6 | 63 | 37 | — | 4 | 9 | 9 | — | 454 | 348 | 230 | 127 | 104 | 80 | 57 | 38 | 22 |
Swell 2 Height (m) Direction Period (s) | — | NNW 5 | W 18 | — | W 16 | W 16 | — | — | — | — | — | SW 14 | SW 14 | W 14 | W 14 | W 13 | W 13 | W 13 | W 13 | W 12 |
| kJ | — | 9 | 6 | — | 5 | 5 | — | — | — | — | — | 8 | 8 | 4 | 4 | 3 | 3 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 10 | — | — | W 9 | — | SSW 3 | WSW 7 | W 8 | W 8 | W 8 | W 8 | — | — | — | — | — | — | SE 2 | SSE 3 | — |
| kJ | 847 | — | — | 123 | — | 3 | 245 | 187 | 227 | 223 | 292 | — | — | — | — | — | — | 1 | 9 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 250 | 125 | 4 | 4 | 62 | 0 | 482 | 227 | 14 | 378 | 227 | 249 | 26 | 249 | 38 | 11 | 14 | 0 | 27 | 201 |
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.
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