Surf Forecasts:
Port Isaac surf forecast from 18 Sep 2026:
- Best quality surf: Wednesday 23 Sep, 1AM (local time) - 3.5ft (1.0m), 11s period, W swell with cross-offshore winds.
- Most powerful swell: Wednesday 23 Sep, 1PM (local time) - 4.5ft (1.3m), 13s period, W swell with 609 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 7PM (local time) - 3.5ft (1.0m), 11s 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 (Sep 20) at 7PM. The primary swell is predicted to be 1.0m and 11s period with a secondary swell of 0.2m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Port Isaac in the next 16 days are 1.3m 13s and forecast to arrive on Wednesday (Sep 23) at 1PM. 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+) | 7PM (Sun 20th Sep) | 3.5ft (1.0m) 11s |
| Best Surf | 1AM (Wed 23rd Sep) | 3.5ft (1.0m) 11s |
| Most Powerful | 1PM (Wed 23rd Sep) | 4.5ft (1.3m) 13s |
Table - best surf conditions forecast for Port Isaac over the next 16 days.
Short Range ForecastMostly dry. Very mild (max 17°C on Fri night, min 14°C on Sat night). Winds decreasing (fresh winds from the SW on Fri afternoon, calm by Sun night). | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Mon afternoon, min 16°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||||
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 7 | W 8 | W 8 | W 8 | W 10 | W 11 | W 11 | W 11 | W 10 | W 10 | W 9 | W 10 | W 10 | W 11 | WNW 14 | W 13 | W 12 | W 11 | W 11 | W 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 302 | 226 | 516 | 529 | 476 | 479 | 326 | 274 | 184 | 98 | 71 | 40 | 96 | 177 | 231 | 336 | 490 | 280 | 151 | 112 | 48 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-off | cross | cross-on | on | on | glassy | glassy | glassy | glassy | glassy | glassy | cross-off | glassy | cross-on | cross-off | cross-off | off | cross-off |
High Tide | 10:25AM5.30m | 10:51PM4.94m | 11:19AM4.82m | 11:59PM4.51m | 12:45PM4.52m | 1:44AM4.38m | 2:31PM4.63m | 3:14AM4.67m | 3:41PM5.06m | 4:09AM5.15m | 4:27PM5.58m | 4:48AM5.67m | 5:04PM6.11m | ||||||||
Low Tide | 4:36PM2.05m | 4:58AM2.34m | 5:40PM2.50m | 6:19AM2.69m | 7:27PM2.69m | 8:14AM2.68m | 9:06PM2.45m | 9:32AM2.31m | 10:06PM1.99m | 10:22AM1.82m | 10:47PM1.47m | 11:00AM1.32m | 11:22PM0.98m | ||||||||
 | |  | | |  |  |  |  | | | | | | | | | | | | | |
 | 6:58 | — | — | 6:58 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — |
 | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:21 | — | — | 7:17 | — | — | 7:15 | — | — | 7:14 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 17 | 17 | 17 | 17 | 16 | 16 | 15 | 19 | 20 | 18 | 20 | 20 | 18 | 19 | 20 | 18 | 21 | 21 | 19 |
Feels °C | 12 | 10 | 13 | 12 | 14 | 16 | 14 | 15 | 15 | 20 | 20 | 18 | 20 | 20 | 17 | 18 | 19 | 18 | 18 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | NNW 5 | WNW 12 | WNW 12 | — | WNW 11 | W 10 | W 11 | W 11 | W 11 | W 10 | W 10 | W 9 | W 10 | W 10 | W 11 | W 10 | W 13 | W 12 | W 11 | W 11 | W 10 |
| kJ | 5 | 192 | 29 | — | 41 | 479 | 326 | 274 | 184 | 98 | 71 | 40 | 96 | 177 | 231 | 153 | 490 | 280 | 151 | 112 | 48 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NNW 4 | — | — | — | — | W 20 | WNW 18 | WNW 14 | — | — | — | N 5 | — |
| kJ | — | — | — | — | — | — | — | — | 2 | — | — | — | — | 8 | 60 | 336 | — | — | — | 2 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 8 | W 7 | W 8 | W 8 | W 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 5 | — | — |
| kJ | 302 | 226 | 516 | 529 | 476 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 258 | 227 | 227 | 258 | 62 | 224 | 44 | 38 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 6 | 0 | 3 | 0 | 6 |
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