Surf Forecasts:
Port Isaac surf forecast from 11 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 1AM (local time) - 3ft (0.9m), 5s period, NNW swell with 40 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 0.9m 5s and forecast to arrive on Sunday (Jul 12) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Monday (Jul 13) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Sun 12th Jul) | 3ft (0.9m) 5s |
Table - best surf conditions forecast for Port Isaac over the next 16 days.
Alright, let’s switch gears into feet and Fahrenheit. This is Rusty, giving you the same story, but in numbers you might be more used to.
We’ve got a long, grim stretch ahead for Port Isaac. From Friday 10 July all the way until the morning of Thursday 23 July, there’s basically nothing. Swell heights are mostly under 3ft, often down around 0.3ft to 3ft. The wave energy readings are tiny, mostly below 100 (weak). Winds are all over the place but the surf just isn’t there. That’s a solid two-week gap with no recommendations.
Then Thursday 24 July finally delivers—but it’s a beast. The morning swell hits 12ft from the west with a 10-second period, and the afternoon goes to 13ft from the west with 11 seconds. Combined energy is 2652 in the morning and 4046 in the afternoon (very strong wave energy). The notes say it’s too big for this break. Winds are cross-off then offshore, so it’ll be clean, but this is for experts only.
Friday 25 July morning is the true standout. Swell at 8ft from the west, 11-second period, combined energy of 1555 (strong wave energy), and cross-off winds from the SSW at 15 km/h. The forecast says excellent for experienced surfers. That’s your session. The afternoon drops to 8ft and gets more marginal.
Water temp on 10 July was 64°, which is 4° above the long-term average—very unusual, the water is warm for July. Port Isaac is a fairly consistent spot, exposed to WNW swells. Crowds can be around sometimes, so expect company when it’s good. Just don’t even think about Thursday unless you’ve got a death wish.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Sun afternoon, min 18°C on Sun night). Winds increasing (calm on Fri night, fresh winds from the E by Mon morning). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 27°C on Tue morning, min 17°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 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 8 | W 9 | NNW 5 | NNW 6 | W 21 | NE 4 | W 19 | NE 4 | NNE 5 | W 11 | W 11 | W 10 | W 10 | W 9 | W 9 | W 8 | W 9 | W 9 | W 8 | W 8 | NNW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 35 | 28 | 40 | 12 | 9 | 20 | 7 | 12 | 15 | 22 | 21 | 18 | 17 | 15 | 14 | 12 | 13 | 13 | 12 | 12 | 33 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross-off | cross | cross-off | cross | cross-off | cross | cross-off | cross-off | cross | cross-on | cross | cross | cross | glassy | cross-on | on | on |
High Tide | 3:23PM5.80m | 3:56AM5.96m | 4:27PM6.17m | 4:58AM6.29m | 5:25PM6.59m | 5:54AM6.61m | 6:18PM6.97m | 6:45AM6.85m | 7:07PM7.23m | 7:33AM6.95m | 7:54PM7.32m | 8:18AM6.91m | 8:39PM7.22m | ||||||||
Low Tide | 9:09AM1.46m | 9:45PM1.34m | 10:17AM1.19m | 10:51PM0.97m | 11:18AM0.85m | 11:49PM0.58m | 12:12PM0.52m | 00:42AM0.26m | 1:02PM0.29m | 1:31AM0.08m | 1:48PM0.19m | 2:18AM0.08m | 2:33PM0.25m | 3:02AM0.23m | |||||||
 | |  |  | |  |  | | | | | | |  | | |  | | | | | |
 | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — |
 | — | — | 9:29 | — | — | 9:28 | — | — | 9:28 | — | — | 9:27 | — | — | 9:25 | — | — | 9:24 | — | — | 9:23 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 1 | — | — | — | — |
Temp °C | 29 | 29 | 26 | 30 | 31 | 28 | 26 | 29 | 25 | 27 | 27 | 24 | 24 | 24 | 18 | 22 | 22 | 19 | 19 | 18 | 17 |
Feels °C | 26 | 26 | 25 | 26 | 26 | 22 | 21 | 25 | 23 | 23 | 24 | 23 | 23 | 23 | 18 | 22 | 22 | 20 | 18 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 9 | NNW 5 | NNW 6 | NNW 5 | NNW 6 | N 6 | W 19 | NNW 6 | NNW 6 | NNE 4 | NNW 6 | NNW 6 | W 9 | W 9 | W 8 | W 9 | W 9 | NW 4 | W 8 | NNW 5 |
| kJ | 35 | 24 | 40 | 12 | 5 | 3 | 3 | 7 | 6 | 7 | 5 | 12 | 6 | 15 | 14 | 12 | 13 | 13 | 3 | 12 | 33 |
Swell 2 Height (m) Direction Period (s) | N 5 | W 17 | W 9 | W 8 | W 8 | W 8 | W 19 | W 8 | W 12 | W 11 | W 11 | W 10 | W 10 | W 16 | NNW 3 | NNW 3 | NNW 5 | WSW 7 | W 8 | SW 6 | W 8 |
| kJ | 11 | 6 | 13 | 5 | 5 | 1 | 7 | 1 | 11 | 22 | 21 | 18 | 17 | 5 | 1 | 1 | 3 | 5 | 12 | 1 | 5 |
Swell 3 Height (m) Direction Period (s) | W 17 | — | W 16 | W 16 | W 21 | W 15 | W 8 | N 6 | W 8 | W 18 | N 5 | W 7 | — | SW 7 | SW 7 | W 10 | SW 6 | W 15 | SW 6 | W 13 | SW 5 |
| kJ | 6 | — | 5 | 5 | 9 | 5 | 1 | 1 | 1 | 6 | 2 | 1 | — | 2 | 2 | 2 | 2 | 4 | 1 | 3 | 1 |
Wind waves Height (m) Direction Period (s) | — | N 5 | — | NE 4 | NE 4 | NE 4 | ENE 4 | NE 4 | NNE 5 | NE 3 | — | — | — | NW 5 | — | — | W 3 | NW 3 | — | NNW 4 | — |
| kJ | — | 28 | — | 9 | 9 | 20 | 21 | 12 | 15 | 7 | — | — | — | 5 | — | — | 1 | 4 | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 6 | 3 | 3 | 15 | 233 | 372 | 394 | 397 | 15 | 118 | 6 | 6 | 15 | 126 | 83 | 278 | 56 | 15 | 288 | 715 | 431 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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