Surf Forecasts:
Port Isaac surf forecast from 12 Sep 2026:
- Best quality surf: Sunday 13 Sep, 10PM (local time) - 3.5ft (1.1m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Sunday 13 Sep, 4AM (local time) - 5ft (1.6m), 10s period, W swell with 492 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 10PM (local time) - 3.5ft (1.1m), 10s 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 13) at 10PM. The primary swell is predicted to be 1.1m and 10s 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 1.6m 10s and forecast to arrive on Sunday (Sep 13) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 13th Sep) | 3.5ft (1.1m) 10s |
| Best Surf | 10PM (Sun 13th Sep) | 3.5ft (1.1m) 10s |
| Most Powerful | 4AM (Sun 13th Sep) | 5ft (1.6m) 10s |
Table - best surf conditions forecast for Port Isaac over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what’s on the table for the next couple of weeks at Port Isaac.
Overall, it’s a grim stretch of surf ahead. The first real action worth paddling out for doesn’t show up until the 14th of September, and even then, it’s a slim pickings kind of deal. We’ve got a long dry spell from now until then with basically nothing to write home about.
The period kicks off with a bit of energy on the 12th, but it's a no-go. The swell direction from the west is decent, but that wind is a cross-offshore mess, and the wave quality is just poor. The combined wave energy (169) is weak, and the swell period is only 8 seconds—short, weak, and messy. Not worth suiting up for.
The first glimmer, and I mean a tiny one, comes on the morning of the 14th. Swell drops back to 3ft from the west, energy is weak (160), but there’s a window with clean conditions and slightly better shape. It’s still a beginner-friendly swell, but for a true standout? No way.
The best of a bad bunch is looking like the Sunday morning of the 15th of September. Swell is 5ft from the west with a period of 10 seconds, energy hits 434—moderate, with some push behind it. The wind is cross-shore and light, so it won’t be blown out. The wave comment says poor surf conditions, but honestly, for this run, that’s as good as it gets. Since this is a beach break, the longer period will mean longer lulls between sets, but the shape should be better than anything else around.
The rest of the run? Onshore winds, chop, and dropping swell. The 16th has a bigger 6ft pulse from the WNW in the morning, but it’s onshore, choppy, and only for the brave. After that, we fade into flatness. The combined energy drops to double-digit values from the 21st onward—15 to 92—which is barely a ripple.
There’s no standout quality here. If you’re desperate, the 15th morning is your best shot, but keep expectations low. Water temp is about average for September. No crowds mentioned, so at least you’ll have the place to yourself.
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Sat night. Warm (max 21°C on Mon morning, min 13°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Very mild (max 18°C on Mon night, min 14°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | W 8 | WNW 8 | WNW 7 | W 11 | W 10 | W 6 | WNW 7 | WNW 9 | W 9 | W 12 | W 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 165 | 243 | 472 | 434 | 325 | 184 | 160 | 146 | 103 | 195 | 241 | 310 | 279 | 441 | 302 | 88 | 152 | 248 | 136 | 239 | 180 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | on | on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off |
High Tide | 6:52AM7.12m | 7:09PM7.38m | 7:28AM7.14m | 7:45PM7.26m | 8:02AM7.00m | 8:19PM6.96m | 8:36AM6.71m | 8:53PM6.53m | 9:09AM6.30m | 9:28PM6.02m | 9:44AM5.81m | 10:05PM5.47m | 10:25AM5.30m | 10:51PM4.94m | |||||||
Low Tide | 1:05PM0.03m | 1:26AM-0.02m | 1:40PM0.07m | 1:59AM0.15m | 2:13PM0.27m | 2:30AM0.46m | 2:45PM0.61m | 3:01AM0.87m | 3:18PM1.04m | 3:33AM1.35m | 3:53PM1.54m | 4:10AM1.86m | 4:36PM2.05m | ||||||||
 | |  |  | | | |  |  | | | | | | |  | |  | | | | |
 | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — |
 | — | 7:40 | — | — | 7:38 | — | — | 7:36 | — | — | 7:34 | — | — | 7:31 | — | — | 7:30 | — | — | 7:27 | — |
mm | — | — | 18 | — | — | 1 | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — |
Temp °C | 18 | 19 | 18 | 18 | 19 | 19 | 21 | 21 | 18 | 17 | 16 | 16 | 15 | 15 | 16 | 16 | 16 | 15 | 16 | 16 | 15 |
Feels °C | 14 | 15 | 16 | 18 | 19 | 19 | 20 | 19 | 17 | 13 | 12 | 12 | 10 | 10 | 12 | 12 | 11 | 11 | 13 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | W 15 | — | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | W 8 | WNW 8 | WNW 12 | W 11 | W 10 | W 10 | W 9 | WNW 9 | W 9 | W 12 | W 12 |
| kJ | 4 | — | 472 | 434 | 325 | 184 | 160 | 146 | 103 | 195 | 241 | 310 | 31 | 441 | 302 | 70 | 44 | 248 | 136 | 239 | 180 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 12 | W 12 | — | — | — | — | — | — | — | — | — | W 13 | NNW 4 | — |
| kJ | — | — | — | — | — | — | — | 3 | 3 | — | — | — | — | — | — | — | — | — | 85 | 2 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 4 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — |
Wind waves Height (m) Direction Period (s) | W 8 | W 7 | — | — | — | — | — | — | — | — | NNW 4 | — | WNW 7 | NNW 6 | — | W 6 | WNW 7 | — | — | — | — |
| kJ | 165 | 243 | — | — | — | — | — | — | — | — | 8 | — | 279 | 36 | — | 88 | 152 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 26 | 218 | 26 | 113 | 4 | 0 | 14 | 14 | 0 | 69 | 250 | 86 | 38 | 113 | 227 | 250 | 249 | 61 | 86 | 218 | 0 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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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