Surf Forecasts:
Port Isaac surf forecast from 28 Aug 2026:
- Best quality surf: Sunday 30 Aug, 4AM (local time) - 5ft (1.6m), 9s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 4AM (local time) - 8ft (2.5m), 10s period, W swell with 1,153 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 4AM (local time) - 5ft (1.6m), 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 (Aug 30) at 4AM. The primary swell is predicted to be 1.6m and 9s 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 0.5m 3s period and expected on Saturday (Aug 29) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 30th Aug) | 5ft (1.6m) 9s |
| Best Surf | 4AM (Sun 30th Aug) | 5ft (1.6m) 9s |
| 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 have a look at what Port Isaac is offering up over the next couple of weeks. I gotta be straight with you – it’s a pretty grim picture for anyone wanting to get a wave.
Right off the bat, the whole 16-day window is a write-off. There isn't a single moment where the surf is worth paddling out for. The first few days, from Friday the 28th of August right through the weekend, we’ve got a bit of swell in the water, but it’s all wrapped up in horrible onshore or cross-shore winds. Friday morning sees a weak 3ft west swell at a short 5 seconds, but a cross-shore wind makes a mess of it. The combined swell energy is only a paltry 54 (weak), and it's been tagged as "poor surf conditions" across the board. Even when the wind turns offshore for a bit on Saturday morning, the swell is too small at 2ft.
There’s a pulse of bigger energy on Monday the 31st of August, with a 7ft west swell and a long-period 10 seconds. The combined energy jumps to 821 (strong to very strong), but that’s all for nothing because the wind is cross-onshore and strong at 19 mph, making it a lumpy, choppy mess. That’s expert-only territory for the size, but without any clean conditions, it’s a no-go.
The same story repeats itself for the whole first week and into the second. We see pulses of 5ft to 6ft west swell on the 3rd, 4th, and 7th, all with moderate to strong energy (263 to 400), but every single one is let down by a cross or cross-onshore breeze. The water temp is a balmy 66° – much warmer than normal for the time of year, about 4° above average, which is notable but won’t help the waves.
There is no standout session. Nothing even comes close. The second week is even weaker, with tiny 2ft to 1ft swells and lighter winds, but the swell direction is shifting around and the period is short. It’s a flat and bleak outlook. For a spot like Port Isaac, when the consistency is lacking and the wind doesn’t play ball, we get these long blank runs. It happens.
If you’re desperate for a paddle, maybe the clean conditions on the 30th or 2nd of September could be okay for a longboard, but it’s small and weak. For now, leave the board in the shed.
Rusty.
Short Range ForecastHeavy rain (total 38mm), heaviest during Fri night. Warm (max 20°C on Sun morning, min 16°C on Fri night). Winds decreasing (strong winds from the W on Sat morning, light winds from the SSW by Sat night). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Tue morning. Very mild (max 18°C on Tue afternoon, min 16°C on Mon morning). Winds increasing (light winds from the W on Tue night, fresh winds from the SW by Wed afternoon). | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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 5 | W 5 | WSW 6 | WSW 6 | W 9 | W 9 | W 9 | WSW 8 | W 9 | W 10 | W 9 | W 10 | W 9 | W 9 | W 8 | W 8 | WSW 6 | W 8 | W 8 | W 8 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 40 | 61 | 61 | 32 | 297 | 586 | 264 | 284 | 1016 | 821 | 619 | 422 | 162 | 122 | 82 | 54 | 160 | 345 | 263 | 341 | 268 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | off | cross-on | cross | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross | cross | cross-off | cross-off |
High Tide | 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 | 10:01AM6.20m | 10:27PM6.00m | ||||||||
Low Tide | 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 | 4:10PM1.13m | ||||||||
 | |  | | |  |  | |  |  | |  | |  | | | | | | | | |
 | 6:26 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — |
 | — | 8:14 | — | — | 8:10 | — | — | 8:08 | — | — | 8:07 | — | — | 8:05 | — | — | 8:02 | — | — | 8:00 | — |
mm | 1 | 2 | 12 | 6 | 1 | — | 1 | 9 | 6 | — | — | — | 1 | — | — | 2 | 1 | — | — | — | — |
Temp °C | 19 | 18 | 18 | 18 | 18 | 17 | 20 | 17 | 16 | 17 | 16 | 16 | 17 | 18 | 16 | 17 | 18 | 18 | 20 | 20 | 19 |
Feels °C | 15 | 14 | 16 | 12 | 13 | 13 | 14 | 13 | 10 | 12 | 12 | 14 | 14 | 16 | 15 | 13 | 15 | 16 | 16 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | W 9 | — | W 8 | WSW 6 | — | — | W 9 | — | — | — | — | W 10 | W 9 | W 9 | W 8 | W 8 | — | W 15 | — | — | SW 15 |
| kJ | 14 | — | 5 | 32 | — | — | 264 | — | — | — | — | 422 | 162 | 122 | 82 | 54 | — | 4 | — | — | 9 |
Swell 2 Height (m) Direction Period (s) | — | — | — | WNW 5 | — | — | — | — | — | — | — | — | W 18 | W 18 | W 16 | W 16 | — | — | — | — | — |
| kJ | — | — | — | 5 | — | — | — | — | — | — | — | — | 6 | 6 | 5 | 5 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 5 | W 5 | WSW 6 | S 3 | W 9 | W 9 | — | WSW 8 | W 9 | W 10 | W 9 | — | — | — | — | SSW 2 | WSW 6 | W 8 | W 8 | W 8 | W 8 |
| kJ | 40 | 61 | 61 | 3 | 297 | 586 | — | 284 | 1016 | 821 | 619 | — | — | — | — | 1 | 160 | 345 | 263 | 341 | 268 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 288 | 228 | 508 | 293 | 114 | 39 | 4 | 482 | 117 | 124 | 203 | 38 | 250 | 227 | 41 | 407 | 227 | 258 | 14 | 227 | 250 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Port Isaac surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest