Surf Forecasts:
Port Isaac surf forecast from 29 Aug 2026:
- Best quality surf: Sunday 30 Aug, 7AM (local time) - 4.5ft (1.4m), 9s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 1AM (local time) - 8ft (2.5m), 9s period, W swell with 1,238 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 7AM (local time) - 4.5ft (1.4m), 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 7AM. The primary swell is predicted to be 1.4m 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 9s and forecast to arrive on Monday (Aug 31) at 1AM. 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+) | 7AM (Sun 30th Aug) | 4.5ft (1.4m) 9s |
| Best Surf | 7AM (Sun 30th Aug) | 4.5ft (1.4m) 9s |
| Most Powerful | 1AM (Mon 31st Aug) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Port Isaac over the next 16 days.
The Lowdown
Yo, Rusty here. Alright, let's look at what's on the menu for Port Isaac over the next couple of weeks. Gotta be straight with you – the first week is a write-off. We're looking at a solid block of poor surf blowing through from Saturday the 29th of August right through to Sunday the 6th of September. The wind is all over the shop, mostly onshore or cross-shore, and it's just messy out there. You see that energy on the 31st of August, with the combined energy hitting 1057? That's a lot of power, but it's coming in with a gusty cross-onshore wind, so it's just a washing machine. Not worth getting wet for.
Now, mark your calendars for the 7th of September – that Monday morning is where it finally clicks. The wind drops to glassy, literally, with a 3 mph breeze from the southeast. Swell is a solid 6 ft from the west, with a period of 11 seconds. That's a proper groundswell. The combined energy is humming at 722, which is strong. This is your standout. Port Isaac is a fairly exposed spot, and with that WNW optimum direction, this west swell is going to line up beautifully. The crowd's there sometimes, but on a Monday morning with conditions this clean, you'll find a few of us out. The water's much warmer than normal for this time of year, with a 2° anomaly, so you can leave the thick suit at home.
The 8th of September, Tuesday morning, is still a nice option. The swell drops to 3 ft, but you've got a gentle offshore wind from the southeast keeping it clean. It's a smaller, more relaxed day, but still good.
Then we get to the real killer window. The 10th of September, Thursday morning, is good, but the afternoon is where it gets serious. You've got a 8 ft west swell rolling in with a moderate offshore wind from the southeast. That's a size that's for the experienced crew – over 8 ft and it's expert territory, so if you're a beginner, watch from the cliff. The combined energy is 957, just massive. The 11th of September, Friday, is a dream. Clear skies, light offshore winds, and a 5 ft to 6 ft west swell with a period stretching to 12 seconds. That's about as good as it gets. The energy is in the 800s, so there's plenty of push. The 13th of September, Sunday morning, is another belter. 5 ft, light winds, clean. Smooth, lined-up waves.
So, to sum it up: the first week is a bust. Don't bother. The whole second week, from the 7th to the 13th, is stacked. The absolute best is the 11th of September – that Friday is pure magic. The 10th afternoon is the big one for the experts. Rest of the time, it's all rideable. Get on it.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Sat morning. Very mild (max 19°C on Sat morning, min 15°C on Mon morning). Winds decreasing (strong winds from the W on Sat afternoon, light winds from the SW by Mon night). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Wed night. Very mild (max 19°C on Wed morning, min 16°C on Tue night). Winds increasing (light winds from the SW on Tue night, fresh winds from the SW by Wed morning). | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | WSW 6 | W 6 | W 9 | W 9 | WSW 8 | W 9 | W 10 | W 9 | W 10 | W 9 | W 9 | W 8 | WSW 6 | WSW 8 | W 8 | W 8 | W 8 | W 13 | W 12 | W 8 | WNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 51 | 220 | 492 | 264 | 367 | 1238 | 1057 | 563 | 307 | 157 | 123 | 82 | 117 | 427 | 428 | 339 | 339 | 957 | 284 | 491 | 494 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross-off | cross | cross-on | cross-on | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross | cross | cross-off |
High Tide | 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 | 10:54AM5.74m | 11:27PM5.48m | ||||||||
Low Tide | 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 | 4:37AM1.42m | 5:08PM1.60m | ||||||||
 |  |  |  |  |  |  |  | | | |  | | |  | |  | | | | | |
 | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — |
 | — | 8:10 | — | — | 8:08 | — | — | 8:07 | — | — | 8:05 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — |
mm | 9 | — | — | 4 | 5 | 2 | 1 | — | — | — | — | — | — | 1 | 5 | — | — | — | — | — | — |
Temp °C | 19 | 18 | 17 | 18 | 18 | 16 | 16 | 17 | 16 | 18 | 18 | 17 | 19 | 19 | 18 | 18 | 17 | 16 | 18 | 18 | 17 |
Feels °C | 15 | 11 | 13 | 14 | 13 | 9 | 12 | 13 | 14 | 15 | 15 | 14 | 15 | 15 | 14 | 14 | 12 | 11 | 12 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | — | — | W 9 | — | — | — | W 9 | W 10 | W 9 | W 18 | W 8 | W 16 | — | — | SW 15 | WNW 15 | — | W 12 | — | W 11 |
| kJ | 51 | — | — | 264 | — | — | — | 563 | 307 | 157 | 6 | 82 | 5 | — | — | 9 | 23 | — | 284 | — | 110 |
Swell 2 Height (m) Direction Period (s) | W 8 | — | — | — | — | — | — | — | NNW 5 | W 18 | — | W 16 | — | — | — | — | SW 16 | — | — | — | — |
| kJ | 1 | — | — | — | — | — | — | — | 5 | 6 | — | 5 | — | — | — | — | 9 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | W 6 | W 9 | — | WSW 8 | W 9 | W 10 | NNW 6 | — | — | W 9 | — | WSW 6 | WSW 8 | W 8 | W 8 | W 8 | W 13 | W 7 | W 8 | WNW 8 |
| kJ | — | 220 | 492 | — | 367 | 1238 | 1057 | 25 | — | — | 123 | — | 117 | 427 | 428 | 339 | 339 | 957 | 217 | 491 | 494 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 233 | 114 | 39 | 56 | 129 | 249 | 124 | 218 | 0 | 14 | 14 | 62 | 310 | 221 | 227 | 203 | 250 | 250 | 258 | 227 | 39 |
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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