Surf Forecasts:
Port Isaac surf forecast from 23 Aug 2026:
- Best quality surf: Saturday 29 Aug, 4AM (local time) - 6.5ft (2.0m), 9s period, W swell with cross-offshore winds.
- Most powerful swell: Saturday 29 Aug, 1AM (local time) - 7ft (2.2m), 10s period, W swell with 930 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 1PM (local time) - 2.5ft (0.7m), 7s period with SW 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 Thursday (Aug 27) at 1PM. The primary swell is predicted to be 0.7m and 7s period with a secondary swell of 0.3m and 8s. Another secondary swell of 0.2m and 10s is also forecast. 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 2.2m 10s and forecast to arrive on Saturday (Aug 29) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Monday (Aug 24) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Thu 27th Aug) | 2.5ft (0.7m) 7s |
| Best Surf | 4AM (Sat 29th Aug) | 6.5ft (2.0m) 9s |
| Most Powerful | 1AM (Sat 29th Aug) | 7ft (2.2m) 10s |
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 offer for Port Isaac over the next couple of weeks.
To be straight with you, the next week and a half is a tough one. We’re looking at a long stretch of tiny, weak, and mostly messy conditions. From Sunday the 23rd right through to the end of the month, the swell is barely a ripple, with heights mostly under 2ft and combined wave energy stuck in the weak zone (under 100). Winds are a mixed bag of cross-off, onshore, and cross-shore, but none of it is doing us any favours. There’s a real gap in quality surf here – over a week of nothing worth paddling out for.
The first real glimmer of hope shows up on the morning of Thursday, the 27th. The afternoon picks up a bit with 3ft from the WSW, period of 9 seconds, and the energy jumps to a moderate 153. The winds are light and cross-off, making it clean. It’s small, but it’s the first thing that’s even surfable.
Now, the standout for the whole period is Friday, the 4th of September. The morning brings a solid 8ft groundswell from the west, with a 10-second period and a strong 1004 energy reading. The wind is light and cross-off from the SSW, so it’ll be clean. That’s proper size – over 8ft, so this one is for experienced surfers only. It’s a bit of a long-range call, so keep an eye on it, but if it lines up, Port Isaac (Cornwall) will have some serious muscle. The water temp is a touch warmer than normal at 65°F for the time of year, which is a nice bonus if you’re getting in the water.
Saturday morning the 5th and Sunday morning the 6th are worth a mention too, with 6ft and 7ft west swell, clean winds, and solid energy (405 and 650). It’s still big and powerful, so again, not for the beginners. The 5th afternoon and 6th afternoon get a bit messy with wind, so the mornings are the go.
Overall, the best bet is Friday morning, the 4th of September. Big, clean, powerful west swell. Get on it if you’ve got the experience.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Mon afternoon, min 15°C on Sun night). Winds increasing (calm on Sun morning, fresh winds from the E by Mon morning). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Wed night. Warm (max 21°C on Wed morning, min 15°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
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 | WSW 13 | WSW 10 | W 9 | W 9 | W 9 | WNW 10 | W 10 | W 9 | W 8 | W 8 | W 8 | WSW 8 | WSW 9 | WSW 8 | WNW 9 | WNW 9 | W 10 | W 8 | W 8 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 13 | 17 | 19 | 8 | 6 | 6 | 20 | 50 | 42 | 36 | 32 | 18 | 23 | 133 | 62 | 28 | 27 | 930 | 675 | 628 | 675 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross-off | cross-off | cross | cross-off | off | off | off | off | off | cross-off | cross-off | cross-off | cross | on | cross | cross | cross | cross |
High Tide | 3:05PM4.71m | 3:44AM4.77m | 4:12PM5.10m | 4:38AM5.18m | 4:59PM5.57m | 5:19AM5.63m | 5:37PM6.05m | 5:55AM6.06m | 6:11PM6.48m | 6:28AM6.43m | 6:43PM6.82m | 7:00AM6.71m | 7:15PM7.05m | ||||||||
Low Tide | 9:36PM2.38m | 10:04AM2.24m | 10:36PM1.98m | 10:54AM1.80m | 11:19PM1.53m | 11:33AM1.35m | 11:55PM1.09m | 12:07PM0.94m | 00:28AM0.71m | 12:39PM0.61m | 00:59AM0.42m | 1:10PM0.38m | 1:30AM0.25m | ||||||||
 |  |  | | | | | | | |  |  | | | |  | | | |  | | |
 | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — |
 | — | 8:23 | — | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — | — | 8:15 | — | — | 8:14 | — | — | 8:10 | — |
mm | — | — | — | — | — | — | — | — | — | — | 2 | 4 | — | — | — | 2 | — | — | 2 | 2 | 4 |
Temp °C | 19 | 19 | 17 | 21 | 23 | 19 | 23 | 22 | 17 | 21 | 21 | 16 | 19 | 19 | 15 | 18 | 18 | 16 | 18 | 17 | 17 |
Feels °C | 18 | 17 | 15 | 14 | 17 | 14 | 19 | 18 | 15 | 18 | 17 | 14 | 17 | 16 | 13 | 15 | 14 | 13 | 13 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | NNW 4 | W 9 | WSW 10 | W 9 | W 9 | W 9 | WNW 10 | W 10 | W 9 | W 8 | W 8 | W 8 | WSW 8 | WSW 9 | WSW 8 | W 7 | WSW 4 | W 10 | — | — | — |
| kJ | 6 | 6 | 19 | 7 | 6 | 6 | 20 | 50 | 42 | 36 | 32 | 18 | 23 | 133 | 62 | 28 | 11 | 930 | — | — | — |
Swell 2 Height (m) Direction Period (s) | W 9 | WSW 13 | NNW 4 | — | W 14 | W 11 | W 8 | NNE 5 | SW 8 | WSW 4 | WSW 4 | SSW 6 | W 8 | WNW 12 | WNW 10 | WNW 9 | WSW 8 | — | — | — | — |
| kJ | 13 | 17 | 1 | — | 4 | 3 | 1 | 2 | 3 | 1 | 1 | 4 | 11 | 14 | 33 | 28 | 22 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 14 | — | SW 14 | SW 14 | W 9 | W 13 | — | SW 8 | W 13 | N 5 | N 6 | — | W 11 | W 8 | — | W 12 | WNW 9 | — | — | — | — |
| kJ | 8 | — | 8 | 8 | 2 | 3 | — | 3 | 3 | 1 | 1 | — | 3 | 6 | — | 12 | 27 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | NNW 4 | — | E 3 | ENE 3 | ENE 3 | ENE 4 | — | — | — | — | — | SW 4 | — | — | — | S 3 | — | W 8 | W 8 | W 8 |
| kJ | — | 6 | — | 8 | 3 | 4 | 7 | — | — | — | — | — | 9 | — | — | — | 2 | — | 675 | 628 | 675 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 6 | 15 | 393 | 283 | 218 | 15 | 218 | 33 | 15 | 118 | 41 | 4 | 0 | 3 | 33 | 38 | 14 | 482 | 498 | 544 |
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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