
Surf Forecasts:
Port Isaac surf forecast from 8 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 10PM (local time) - 2.5ft (0.7m), 8s period, W swell with cross-offshore winds.
- Most powerful swell: Friday 11 Sep, 1AM (local time) - 6.5ft (2.0m), 9s period, W swell with 651 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 10PM (local time) - 2.5ft (0.7m), 8s 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 Wednesday (Sep 09) at 10PM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.3m and 8s. 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 2.0m 9s and forecast to arrive on Friday (Sep 11) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Thursday (Sep 10) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Wed 9th Sep) | 2.5ft (0.7m) 8s |
| Best Surf | 10PM (Wed 9th Sep) | 2.5ft (0.7m) 8s |
| Most Powerful | 1AM (Fri 11th Sep) | 6.5ft (2.0m) 9s |
Table - best surf conditions forecast for Port Isaac over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s be straight with you: the next couple of weeks around Port Isaac are looking pretty grim for a proper surf. We’ve got a long stretch of small, weak, and mostly messy conditions, so if you’re chasing waves, pick your moments carefully—and don’t expect much.
The first real chance of anything decent doesn’t even show up until the end of the first week. From now through about the 11th, it’s all undersized and blown out, with most swells under 3 feet and winds all over the shop. There’s a bit of energy around the 8th—moderate—but it’s onshore and lumpy, so not worth paddling out for.
Saturday the 12th morning is the first time you might actually get wet. It’s small, around 3 feet from the west, but the wind is a light cross-offshore and it’s clean. It’s ordinary, but it’s something. We’re talking weak energy and a 9-second period, so don’t expect much push. Still, if you’re desperate, it’s the best of a bad bunch.
Then we go quiet again. The 13th has a bit more size—about 5 feet—but it’s cross-onshore and soft. The 14th, 15th, and 16th are back to tiny and mostly messy. The water temp is about average for this time of year, so no surprises there.
Now, here’s the standout. Mark your calendar for the afternoon of Friday the 18th. It’s not big—about 4 feet from the west—but the wind drops to nothing, and it turns glassy. Combined energy is moderate, and the period stretches out to 11 seconds, which means there’s some actual push behind it. For Port Isaac, this is the one. It’s still not a monster, but it’ll be the cleanest, most surfable waves we see in this whole window. Get on it if you can.
The morning of the 18th is also surfable, with a light offshore wind and about 3 feet, but it’s a bit weaker. The 19th stays small and clean but lacks any real size.
After that, it fades again. The 20th is tiny, and then the 21st brings a big jump in period—15 to 16 seconds—but it’s accompanied by strong cross-onshore winds and messy conditions. That long-period energy is there, but it’s going to be blown apart. Not worth it unless you’re into a fight.
The last few days of the window drop right off again. Small, weak, and mostly onshore. If you’re a beginner, the only day that’s even close to manageable is the 18th afternoon, when the swell is well under the 5-foot mark. For everyone else, it’s a waiting game. The break is fairly consistent but it’s just not producing. Forecasts can change, but as it stands, that Friday afternoon is the one to circle.
Rusty out.
Short Range ForecastModerate rain (total 18mm), heaviest on Mon night. Very mild (max 18°C on Thu morning, min 13°C on Wed night). Winds decreasing (fresh winds from the NW on Tue afternoon, light winds from the SW by Wed night). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sat afternoon. Very mild (max 19°C on Sun afternoon, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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 | WNW 9 | WNW 9 | W 8 | W 8 | W 8 | W 8 | WSW 6 | W 9 | W 9 | W 9 | W 8 | W 9 | W 10 | W 7 | W 8 | W 9 | W 9 | W 9 | W 9 | W 9 |
Wave Graph | |||||||||||||||||||||
497 | 495 | 482 | 245 | 112 | 61 | 30 | 45 | 651 | 421 | 181 | 107 | 119 | 118 | 200 | 313 | 264 | 160 | 126 | 97 | 94 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | on | cross-on | off | cross-off | cross-off | cross-on | on | on | on | cross-off | cross | cross | cross-on | cross | cross-off | cross-off | cross | off |
High Tide | 4:16PM6.01m | 4:46AM6.07m | 5:08PM6.58m | 5:33AM6.55m | 5:52PM7.03m | 6:14AM6.92m | 6:32PM7.31m | 6:52AM7.12m | 7:09PM7.38m | 7:28AM7.14m | 7:45PM7.26m | 8:02AM7.00m | 8:19PM6.96m | ||||||||
Low Tide | 10:12AM1.47m | 10:45PM1.04m | 11:05AM0.94m | 11:34PM0.53m | 11:50AM0.48m | 00:15AM0.17m | 12:29PM0.16m | 00:52AM-0.02m | 1:05PM0.03m | 1:26AM-0.02m | 1:40PM0.07m | 1:59AM0.15m | 2:13PM0.27m | 2:30AM0.46m | |||||||
6:43 | — | — | 6:43 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | |
— | 7:50 | — | — | 7:47 | — | — | 7:45 | — | — | 7:43 | — | — | 7:40 | — | — | 7:38 | — | — | 7:36 | — | |
mm | 1 | — | — | — | — | — | — | — | 1 | — | — | — | — | 2 | 1 | — | — | 2 | — | — | — |
Temp °C | 16 | 16 | 16 | 15 | 15 | 14 | 18 | 18 | 17 | 15 | 15 | 14 | 16 | 17 | 17 | 18 | 19 | 19 | 20 | 21 | 18 |
Feels °C | 10 | 9 | 10 | 11 | 13 | 12 | 13 | 13 | 16 | 11 | 11 | 11 | 12 | 12 | 15 | 17 | 19 | 20 | 19 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | W 9 | — | — | W 8 | W 8 | W 8 | W 8 | WSW 8 | — | W 9 | W 9 | W 8 | W 9 | W 10 | W 14 | — | — | W 9 | W 9 | W 9 | W 9 |
497 | — | — | 245 | 112 | 61 | 30 | 6 | — | 421 | 181 | 107 | 119 | 118 | 4 | — | — | 160 | 126 | 97 | 94 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | N 5 | WSW 8 | WSW 8 | W 11 | — | — | — | — | NW 15 | — | — | — | — | — | — | — | W 13 |
— | — | — | — | 13 | 6 | 11 | 9 | — | — | — | — | 9 | — | — | — | — | — | — | — | 3 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | N 5 | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | 2 | 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | WNW 9 | WNW 9 | NNW 6 | — | — | — | WSW 6 | W 9 | — | NNW 5 | N 4 | — | WSW 3 | W 7 | W 8 | W 9 | — | — | — | — |
— | 495 | 482 | 31 | — | — | — | 45 | 651 | — | 31 | 9 | — | 4 | 200 | 313 | 264 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 116 | 250 | 86 | 38 | 30 | 0 | 62 | 201 | 117 | 38 | 38 | 61 | 0 | 26 | 26 | 14 | 4 | 0 | 14 | 26 | 0 |
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)
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.










