Surf Forecasts:
Port Isaac surf forecast from 7 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 7PM (local time) - 2.5ft (0.7m), 9s period, W swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 1PM (local time) - 3ft (0.9m), 11s period, W swell with 178 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 7PM (local time) - 2.5ft (0.7m), 9s 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 (Aug 12) at 7PM. The primary swell is predicted to be 0.7m and 9s 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 0.9m 11s and forecast to arrive on Thursday (Aug 13) 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 0.4m 3s period and expected on Tuesday (Aug 11) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Wed 12th Aug) | 2.5ft (0.7m) 9s |
| Best Surf | 7PM (Wed 12th Aug) | 2.5ft (0.7m) 9s |
| Most Powerful | 1PM (Thu 13th Aug) | 3ft (0.9m) 11s |
Table - best surf conditions forecast for Port Isaac over the next 16 days.
The Lowdown
Alright, listen up. We're staring down a pretty bleak forecast for the next week and a half. The first few days are a total washout, with waves so small they’re barely a bump. The swell energy is pathetic, barely registering in the teens. There’s a brief moment on the 12th of August with some strong offshore wind, but the swell is still a measly 2ft. It’s frustrating.
We then hit a real dry spell. From the 13th onward, the swell tries to build, but the wind is just terrible, mostly blowing across the face or straight onshore, making everything a choppy mess. The 16th of August gives us a couple of glassy windows, but the swell is tiny and has no period. It’s not until the 20th of August that we get a glimpse of something worthwhile.
The one and only highlight I can see is Thursday morning, the 20th of August, at Port Isaac. It’s not going to be a world-class day, but it’s the only real window we’ve got. We’ll have a clean 5ft swell from the west, and the wind is going to be flat calm. That’s a big deal. The combined energy is a solid 312, which is moderate, but the clean conditions will make it rideable. The water temp is a balmy 65°, a touch warmer than usual for this time of year. The swell period is a short 8 seconds, so it’ll be a bit fat and soft, but it’ll be clean and fun for a longboard. It’s a beginner-friendly break, so this is a good one for the less experienced. The crowds can be a bit of a thing sometimes, but you might get lucky.
After that, the 21st of August has clean, surfable waves but they are nothing special. The 22nd is clean but the swell is fading. Nothing else is worth a second look.
So, mark your calendar for that Thursday morning. For the rest of the time, save your energy.
- Rusty
Short Range ForecastMostly dry. Warm (max 22°C on Sat afternoon, min 14°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Tue morning, min 18°C on Wed night). Winds decreasing (strong winds from the SE on Tue night, calm by Wed night). | |||||||||||||||||||
Fri 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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 9 | W 9 | W 9 | W 9 | WNW 8 | W 8 | W 8 | WNW 5 | WNW 8 | WNW 8 | W 8 | W 8 | W 11 | W 10 | W 10 | W 9 | W 11 | W 10 | W 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 7 | 6 | 6 | 6 | 6 | 7 | 6 | 6 | 7 | 14 | 13 | 11 | 10 | 40 | 96 | 87 | 101 | 146 | 162 | 149 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | off | glassy | cross-on | on | cross-on | on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | off | off | glassy | cross-on | cross-on | cross-on |
High Tide | 1:03AM5.38m | 1:46PM5.33m | 2:30AM5.36m | 3:10PM5.54m | 3:49AM5.65m | 4:21PM6.00m | 4:53AM6.09m | 5:19PM6.54m | 5:46AM6.54m | 6:08PM7.01m | 6:33AM6.88m | 6:53PM7.33m | ||||||||
Low Tide | 6:43PM1.81m | 7:27AM1.89m | 8:14PM1.86m | 8:57AM1.80m | 9:41PM1.57m | 10:14AM1.44m | 10:50PM1.09m | 11:14AM0.96m | 11:45PM0.59m | 12:04PM0.52m | 00:33AM0.20m | 12:49PM0.19m | 1:16AM-0.03m | |||||||
 |  |  | |  | | | | | | | | | | | | | | | | |
 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — |
 | 8:53 | — | — | 8:52 | — | — | 8:51 | — | — | 8:49 | — | — | 8:46 | — | — | 8:45 | — | — | 8:44 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 15 | 21 | 22 | 18 | 20 | 20 | 17 | 21 | 21 | 20 | 26 | 26 | 21 | 26 | 26 | 19 | 20 | 20 | 18 |
Feels °C | 14 | 14 | 20 | 21 | 17 | 18 | 18 | 17 | 19 | 18 | 18 | 22 | 20 | 16 | 18 | 20 | 19 | 20 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | W 9 | W 9 | W 9 | WNW 8 | W 8 | WNW 3 | WNW 5 | WNW 5 | WNW 8 | W 8 | W 8 | W 11 | W 10 | W 10 | W 9 | W 11 | W 10 | W 10 |
| kJ | 7 | 6 | 6 | 6 | 6 | 7 | 6 | 1 | 7 | 8 | 13 | 11 | 10 | 40 | 96 | 87 | 101 | 146 | 162 | 149 |
Swell 2 Height (m) Direction Period (s) | — | WNW 4 | — | NW 4 | SW 7 | SW 6 | SW 6 | W 8 | WNW 8 | WNW 8 | WNW 4 | N 4 | W 9 | W 8 | — | — | — | — | — | — |
| kJ | — | 1 | — | 1 | 2 | 2 | 2 | 6 | 7 | 14 | 2 | 1 | 7 | 10 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | W 13 | — | W 7 | — | — | — | SW 6 | SW 7 | SW 6 | SW 7 | W 10 | SW 6 | W 9 | — | — | — | — | — | — |
| kJ | — | 3 | — | 1 | — | — | — | 2 | 2 | 2 | 2 | 2 | 2 | 2 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 4 | — | — | — | — | — | — | — | — | — | NNW 4 | SE 2 | SE 3 | SE 3 | — | — | — | — | — | — |
| kJ | 4 | — | — | — | — | — | — | — | — | — | 2 | 1 | 3 | 1 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 398 | 251 | 218 | 67 | 67 | 410 | 251 | 67 | 67 | 67 | 67 | 407 | 250 | 73 | 240 | 22 | 0 | 14 | 266 | 86 |
Best forecast wave conditions in North Cornwall | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
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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.
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