Surf Forecasts:
Port Isaac surf forecast from 30 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 1AM (local time) - 4.5ft (1.4m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 1PM (local time) - 7.5ft (2.3m), 10s period, W swell with 1,005 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 1AM (local time) - 4.5ft (1.4m), 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 Tuesday (Sep 01) at 1AM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.4m and 5s. 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 2.3m 10s and forecast to arrive on Monday (Aug 31) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Wednesday (Sep 02) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Tue 1st Sep) | 4.5ft (1.4m) 10s |
| Best Surf | 1AM (Tue 1st Sep) | 4.5ft (1.4m) 10s |
| Most Powerful | 1PM (Mon 31st Aug) | 7.5ft (2.3m) 10s |
Table - best surf conditions forecast for Port Isaac over the next 16 days.
The Lowdown
Alright, mate, Rusty here. Let’s have a good look at what’s on the table for Port Isaac over the next couple of weeks.
First off, the water temp is sitting at 66°F with a 4°F anomaly – that’s much warmer than normal for this time of year, so you might get away with a thinner spring suit, which is a bonus.
Right now, we’re looking at a pretty grim start. Sunday the 30th of August has some swell around – 4ft to 5ft from the west – but the wind is a mess. Fresh cross-off in the morning turns into a lumpy cross-chop by the afternoon, and there’s even a risk of thunderstorms. The combined energy is weak (269) so it’s not doing much. Honestly, you’d be better off staying dry.
Monday the 31st is worse. Swell builds to 8ft from the west, but it’s a short period (8 seconds) and the wind is howling from the northwest at 22 mph, cross-onshore. That’s lumpy, messy, and poor. The energy jumps to moderate (985) but it’s all for nothing. Not worth paddling out.
Tuesday the 1st of September offers a glimpse of something surfable. The morning has a clean 3ft west swell, gentle cross-off breeze from the southwest at 9 mph, and the energy is weak (165). The conditions are described as “very ordinary” but at least you can get a few. It’s better than the rest of the week, but still nothing to write home about.
From Wednesday the 2nd through to Friday the 4th, we’re stuck in a pattern of poor surf. Swell sizes fluctuate between 4ft and 7ft, all west or west-northwest, with periods around 7-8 seconds. The wind is mostly cross or cross-on, ranging from moderate to fresh, and the energy sits between weak and moderate (163 to 507). It’s all choppy, lumpy, or cross-chop. Not your friend.
Saturday the 5th and Sunday the 6th of September see the swell drop off fast. We’re down to 2ft by Sunday morning, with light offshore winds from the southeast and clean conditions. The energy is weak (60) – it’s tiny. You could surf if you’re desperate, but it’s barely a ripple.
Monday the 7th and Tuesday the 8th are a write-off. Swell is tiny (1.0ft to 3ft), and Tuesday brings strong onshore winds from the west at 25 mph, making a mess of even the small stuff. The energy is negligible (12 to 46). Stay home.
Things stay small through Wednesday the 9th and Thursday the 10th. Thursday afternoon does show a little pulse: 4ft from the west-southwest with a clean cross-off breeze and gentle wind. The energy is weak (175) and the conditions are “very ordinary” but surfable. It’s not great, but it’s the best we’ve seen in a while.
Friday the 11th is back to poor: 5ft west swell, fresh cross-onshore wind, lumpy. Energy is moderate (283). Not worth it.
Saturday the 12th of September is the standout. Morning brings a clean 4ft west swell with light offshore wind from the south at 6 mph. The energy is weak (187) but the conditions are clean. By afternoon, it drops to 3ft, but the wind goes almost glassy from the southwest at 3 mph, making it clean again. This is the best window in the whole forecast – small but clean, and you’ll have the place to yourself if the crowds are only sometimes around. For a beginner-friendly spot like Port Isaac, this is your moment.
After that, Sunday the 13th and Monday the 14th are tiny again – 1ft to 2ft, with glassy conditions but no real swell. The energy is very weak (31 to 57). Nothing happening.
So, if you’re after the best on offer, target Saturday the 12th of September. It’s the only day that ticks all the boxes: clean, light winds, and a bit of west swell. The rest of the period is a write-off, with a big gap of nothing from the 6th to the 10th, and then again from the 13th onwards. The long-range stuff is too uncertain to get excited about. Keep your eyes peeled for changes, but for now, that Saturday morning is your best bet.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Sun afternoon. Very mild (max 19°C on Sun morning, min 15°C on Mon night). Winds decreasing (fresh winds from the SW on Sun morning, light winds from the WSW by Mon night). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Warm (max 20°C on Wed afternoon, min 15°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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 | W 8 | W 9 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | W 7 | W 8 | W 8 | W 8 | W 8 | W 8 | W 7 | W 8 | W 11 | WNW 10 | W 10 | W 10 |
Wave Graph | |||||||||||||||||||||
269 | 358 | 921 | 985 | 843 | 363 | 157 | 123 | 84 | 158 | 401 | 295 | 253 | 260 | 291 | 507 | 280 | 403 | 270 | 158 | 87 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | cross-on | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross | cross | cross-off | cross | cross-on | cross-on | on | cross-on | cross |
High Tide | 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 | 12:03PM5.32m | 00:50AM5.11m | ||||||||
Low Tide | 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 | 5:43AM1.89m | 6:30PM1.98m | ||||||||
6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | |
— | 8:08 | — | — | 8:07 | — | — | 8:05 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — | — | 7:55 | — | |
mm | 1 | 6 | 3 | 1 | — | — | — | — | — | — | — | 1 | — | — | — | 1 | — | — | — | — | — |
Temp °C | 19 | 18 | 16 | 16 | 16 | 16 | 18 | 18 | 17 | 19 | 20 | 18 | 18 | 18 | 19 | 19 | 16 | 16 | 17 | 17 | 15 |
Feels °C | 15 | 13 | 10 | 10 | 11 | 14 | 15 | 15 | 14 | 15 | 16 | 15 | 16 | 15 | 15 | 17 | 14 | 13 | 15 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | W 9 | — | — | — | — | W 10 | W 9 | W 9 | W 8 | W 7 | — | W 15 | W 8 | SW 16 | SW 15 | — | W 11 | W 11 | WNW 10 | W 10 | W 10 |
269 | — | — | — | — | 363 | 157 | 123 | 84 | 158 | — | 4 | 253 | 9 | 9 | — | 166 | 403 | 270 | 158 | 87 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | NNW 5 | N 4 | W 18 | W 16 | W 16 | — | — | SW 15 | — | — | — | — | W 14 | W 14 | W 13 | NNW 4 |
— | — | — | — | — | 9 | 2 | 6 | 5 | 5 | — | — | 9 | — | — | — | — | 4 | 4 | 3 | 2 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | W 13 |
— | — | — | — | — | — | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | |
Wind waves Height (m) Direction Period (s) | — | W 8 | W 9 | W 10 | W 10 | — | — | — | — | SSW 4 | W 8 | W 8 | — | W 8 | W 8 | W 7 | W 8 | — | — | NNW 4 | — |
— | 358 | 921 | 985 | 843 | — | — | — | — | 13 | 401 | 295 | — | 260 | 291 | 507 | 280 | — | — | 6 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 231 | 482 | 125 | 250 | 113 | 0 | 0 | 62 | 0 | 487 | 221 | 227 | 262 | 14 | 39 | 116 | 69 | 44 | 61 | 62 | 3 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.











