Surf Forecasts:
Port Isaac surf forecast from 14 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 7PM (local time) - 7.5ft (2.3m), 8s period, WNW swell with 639 kJ wave energy.
Best Forecast Surf Conditions for Port Isaac this week:
The most powerful waves expected at Port Isaac in the next 16 days are 2.3m 8s and forecast to arrive on Wednesday (Aug 19) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Wed 19th Aug) | 7.5ft (2.3m) 8s |
Table - best surf conditions forecast for Port Isaac over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s look at what we’ve got for the next couple of weeks.
Right off the bat, I gotta be straight with you – this stretch looks grim for a proper wave. It’s a long, flat run with nothing worth chasing for days. We’ve got a bit of a gap here with no real surf on offer from now until the very end of the period. It’s one of those spells where you might as well clean your wetsuit and wait.
We’re looking at Port Isaac for the entire outlook. Now, this break is a fairly consistent beginner-friendly spot, so it usually has something, but not this time. The swell stays tiny and weak for ages – we’re looking at 1 ft to 4 ft through the first week and a half, all blown out by onshore or cross-onshore winds. On Friday the 14th, the water temp is sitting at 67°, which is 4° warmer than normal – that’s notably warm for the time of year, making it feel a bit tropical, but there’s no wave to enjoy it in. The combined energy stays in the weak range – just 17 to 158 for those first ten days – so there’s no grunt behind it at all. The winds are mostly from the WNW or N, keeping things choppy and messy. Even when a little 5 ft swell shows up on Wednesday the 19th, the period is a short 6 seconds, and it’s onshore, so it’s just lumpy, poor quality junk. Not worth a paddle.
The only glimmer of something happens late on Thursday the 28th and Friday the 29th, but it’s a mess. We get a big pulse of 15 ft swell from the W with a long 12-13 second period – that’s proper groundswell energy, with combined energy smashing 6827 – but the wind is howling from the NNE at 28 mph with a strong cross-onshore. That kind of size with those winds is just dangerous, closed-out chaos. It’s a situation that’s only going to appeal to a kite surfer, not a paddler. For the experienced crew, if the wind dropped it could be epic, but it doesn’t look like it will.
The last day, Saturday the 29th, still has 11 ft of W swell with a 10-11 second period, but it’s still onshore or cross-onshore and lumpy. Looks like a big, messy storm swell with no clean window.
So, the honest truth? There is no standout. No hidden gem. This forecast is a blank. The waves stay poor or flat until the very end when it turns into a windy, oversized mess. For this area, it’s a normal run of poor conditions. Sometimes it stays quiet. It won’t last forever, but for now, I’d hang the board up and check back next week.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Fri morning, min 15°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Mon afternoon, min 16°C on Wed morning). Winds decreasing (fresh winds from the NW on Wed morning, light winds from the WNW by Wed night). | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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 9 | W 9 | WNW 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 7 | WNW 5 | W 8 | W 6 | WNW 6 | W 6 | W 6 | WNW 7 | WNW 8 | WNW 8 | W 8 | W 6 | W 8 |
Wave Graph | |||||||||||||||||||||
104 | 99 | 112 | 63 | 57 | 40 | 17 | 16 | 9 | 21 | 105 | 83 | 139 | 115 | 161 | 317 | 576 | 534 | 190 | 35 | 49 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on |
High Tide | 7:34PM7.45m | 7:55AM7.09m | 8:14PM7.35m | 8:34AM6.93m | 8:52PM7.05m | 9:11AM6.63m | 9:30PM6.61m | 9:48AM6.22m | 10:08PM6.08m | 10:27AM5.75m | 10:49PM5.52m | 11:11AM5.27m | 11:38PM5.00m | ||||||||
Low Tide | 1:30PM0.04m | 1:55AM-0.06m | 2:08PM0.07m | 2:33AM0.10m | 2:46PM0.28m | 3:08AM0.42m | 3:22PM0.62m | 3:43AM0.85m | 3:58PM1.07m | 4:19AM1.34m | 4:37PM1.56m | 4:59AM1.84m | 5:24PM2.04m | ||||||||
6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | |
— | 8:42 | — | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — | — | 8:34 | — | — | 8:31 | — | — | 8:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 18 | 18 | 17 | 15 | 19 | 19 | 19 | 19 | 20 | 19 | 18 | 18 | 17 | 17 | 18 | 17 | 18 | 17 | 16 |
Feels °C | 21 | 21 | 17 | 14 | 13 | 11 | 17 | 16 | 19 | 19 | 19 | 18 | 16 | 15 | 14 | 11 | 14 | 14 | 16 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | WNW 8 | W 8 | W 8 | W 8 | W 7 | W 7 | WNW 4 | WNW 9 | W 18 | W 16 | W 17 | W 17 | W 17 | — | — | WNW 8 | W 8 | W 6 | W 8 |
104 | 99 | 112 | 63 | 57 | 40 | 17 | 16 | 3 | 16 | 6 | 5 | 6 | 6 | 6 | — | — | 534 | 190 | 35 | 49 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | N 3 | W 7 | W 7 | — | — | — | — | — | — | — | W 16 | W 15 | W 8 | SW 14 |
— | — | — | — | — | — | — | 1 | 9 | 4 | — | — | — | — | — | — | — | 5 | 4 | 33 | 8 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 18 | W 18 | — | — | — | — | — | — | — | — | — | SW 14 | — |
— | — | — | — | — | — | — | — | 6 | 6 | — | — | — | — | — | — | — | — | — | 8 | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | N 5 | NNW 4 | NNW 5 | NNW 4 | — | — | WNW 5 | W 8 | W 6 | WNW 6 | W 6 | W 6 | WNW 7 | WNW 8 | — | N 5 | N 5 | N 4 |
— | — | — | 34 | 21 | 28 | 5 | — | — | 21 | 105 | 83 | 139 | 115 | 161 | 317 | 576 | — | 19 | 14 | 9 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 14 | 85 | 507 | 269 | 69 | 410 | 291 | 235 | 407 | 227 | 797 | 288 | 228 | 250 | 908 | 120 | 38 | 61 | 69 | 27 |
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.











