
Surf Forecasts:
Port Isaac surf forecast from 9 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 4AM (local time) - 2ft (0.6m), 11s period, W swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 10AM (local time) - 3.5ft (1.0m), 11s period, W swell with 229 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 4AM (local time) - 2ft (0.6m), 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 Wednesday (Aug 12) at 4AM. The primary swell is predicted to be 0.6m and 11s 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 1.0m 11s and forecast to arrive on Thursday (Aug 13) at 10AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 12th Aug) | 2ft (0.6m) 11s |
| Best Surf | 4AM (Wed 12th Aug) | 2ft (0.6m) 11s |
| Most Powerful | 10AM (Thu 13th Aug) | 3.5ft (1.0m) 11s |
Table - best surf conditions forecast for Port Isaac over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the cards for Port Isaac over the next couple of weeks. I'll be straight with you, it's a tough one to call.
Right off the bat, we're looking at a long dry spell. The first solid chance of a wave doesn't show up until Thursday the 13th of August, and even then, it's not great. For the first few days, we're talking about tiny, weak swell and mostly onshore or cross-onshore winds. It's going to be flat and messy, so save the wax for later.
The first real bump in the ocean arrives on Thursday morning the 13th. Swell picks up to 3ft from the west with an 11-second period, giving us some moderate energy (229). The problem is the wind is onshore from the north, so it'll be blown out and sloppy. It's the first surfable day, but not one to write home about. Friday the 14th and Saturday the 15th are similar stories – a bit of swell but messy winds.
We finally get a glimmer of hope on Tuesday the 18th of August. The morning shows a 4ft west swell (energy 204), but it's a short 7-second period, so it'll be a bit fat and won't have much punch. The wind is light cross-onshore, so it could be okay for a beginner or longboarder who isn't too fussy.
The standout window looks to be Wednesday the 19th of August. The morning has the biggest swell we've seen: 5ft from the NNW with a combined energy of 236. The afternoon pushes that to 5ft from the NW. Now, this swell is short period (6 seconds), so it'll be a bit disorganised and won't have the power of a proper groundswell. With a cross-onshore wind from the NW, it's going to be choppy. For the more experienced among you, this might offer some punchy, if a bit lumpy, waves. Beginners should probably sit this one out as 5ft can be a handful, especially in those conditions.
After that, the swell slowly fades through the end of the week and into the final weekend. Thursday the 20th still has some 4ft swell but with a strong onshore wind, it'll be a washing machine. By Friday the 21st, the wind finally goes offshore from the east, which is great news for clean conditions, but the swell has dropped right back to 3ft and the energy is weak (83). The following days are small again.
So, if you're looking for the best of a bad bunch, keep your eyes on Wednesday the 19th of August for the most size. It won't be pretty, but it's the only time we get any real power. For cleaner, smaller waves, Friday morning the 21st of August is your best bet, but don't expect much push.
Stay tuned, things can change.
Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Wed morning, min 16°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Wed afternoon, min 17°C on Fri night). Winds increasing (light winds from the NNW on Wed afternoon, fresh winds from the N by Sat morning). | |||||||||||||||||||
Sun 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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 | WNW 4 | WNW 5 | W 5 | WNW 8 | W 8 | W 8 | W 11 | W 10 | W 10 | W 9 | W 11 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | W 8 | NNW 5 |
Wave Graph | ||||||||||||||||||||
6 | 14 | 30 | 14 | 22 | 11 | 10 | 60 | 96 | 87 | 108 | 229 | 200 | 151 | 102 | 76 | 137 | 61 | 42 | 46 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross | off | cross-off | cross-off | cross-on | on | cross-on | on | on | on | cross-on | on | on | cross-on | on | cross-on |
High Tide | 3:49AM5.65m | 4:21PM6.00m | 4:53AM6.09m | 5:19PM6.54m | 5:46AM6.54m | 6:08PM7.01m | 6:33AM6.88m | 6:53PM7.33m | 7:15AM7.07m | 7:34PM7.45m | 7:55AM7.09m | 8:14PM7.35m | ||||||||
Low Tide | 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 | 1:30PM0.04m | 1:55AM-0.06m | 2:08PM0.07m | 2:33AM0.10m | |||||||
— | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | |
8:51 | — | — | 8:49 | — | — | 8:46 | — | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — | — | 8:39 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 17 | 18 | 18 | 18 | 24 | 24 | 21 | 26 | 26 | 20 | 23 | 22 | 19 | 19 | 18 | 17 | 17 | 17 | 16 |
Feels °C | 18 | 15 | 15 | 15 | 16 | 22 | 22 | 20 | 24 | 24 | 18 | 21 | 21 | 20 | 19 | 17 | 16 | 12 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | WNW 5 | W 5 | WNW 8 | W 8 | W 8 | W 11 | W 10 | W 10 | W 9 | W 11 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | W 8 | W 8 |
6 | 6 | 30 | 13 | 22 | 11 | 10 | 60 | 96 | 87 | 108 | 229 | 200 | 151 | 102 | 76 | 137 | 61 | 42 | 28 | |
Swell 2 Height (m) Direction Period (s) | SW 6 | SW 6 | WNW 8 | WNW 8 | NNW 4 | NNW 4 | W 9 | W 7 | — | — | — | — | — | — | — | — | — | — | — | — |
2 | 2 | 7 | 14 | 3 | 1 | 7 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | SW 7 | WSW 6 | SW 7 | W 10 | W 13 | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | 2 | 4 | 2 | 8 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | WNW 4 | — | NNW 4 | — | — | — | — | — | — | — | — | NW 3 | — | — | WNW 4 | — | N 4 | NNW 5 | NNW 5 |
— | 14 | — | 4 | — | — | — | — | — | — | — | — | 2 | — | — | 16 | — | 22 | 36 | 46 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 249 | 249 | 67 | 67 | 15 | 394 | 222 | 3 | 3 | 67 | 6 | 38 | 61 | 69 | 114 | 266 | 69 | 315 | 309 | 251 |
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.











