Surf Forecasts:
Port Isaac surf forecast from 21 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 7PM (local time) - 2.5ft (0.7m), 8s period, WSW swell with offshore winds.
- Most powerful swell: Friday 28 Aug, 1PM (local time) - 5.5ft (1.7m), 7s period, W swell with 306 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 7PM (local time) - 2.5ft (0.7m), 8s period with WSW 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 26) at 7PM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.4m and 7s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Port Isaac in the next 16 days are 1.7m 7s and forecast to arrive on Friday (Aug 28) at 1PM. 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 Tuesday (Aug 25) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Wed 26th Aug) | 2.5ft (0.7m) 8s |
| Best Surf | 7PM (Wed 26th Aug) | 2.5ft (0.7m) 8s |
| Most Powerful | 1PM (Fri 28th Aug) | 5.5ft (1.7m) 7s |
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 cookin’ for our stretch of coast.
Straight up, I gotta be honest with you – the first week and a half is a write-off. We’re lookin’ at a real flat spell. From Friday the 21st right through to the end of the month, it’s a whole lot of nothin’ worth paddlin’ out for. The swell is tiny, the wind is messy, and the energy readings are just sad. We’re talkin’ combined energy stuck below 200 (mostly between 12 and 306) – that’s whisper-level weak. You’d be better off takin’ the dog for a walk or cleanin’ out the garage. There’s a tiny flicker on Thursday the 27th morning with a glassy 3 ft, but it’s short period (8 seconds) and the score is still a dud. Not worth gettin’ wet for.
Then, finally, things start to stir. The first real sign of life pops up on Friday the 2nd of September. Wednesday the 2nd and Thursday the 3rd have some proper size rollin’ in, but it’s a bit of a mixed bag. The standout window is Wednesday the 2nd of September. The morning pushes 8 ft from the west, and the afternoon jumps to a solid 10 ft, also from the west. The period is a decent 9 to 10 seconds, so it’s got some push. The combined energy jumps hard – 1020 on Wednesday morning and a meaty 1700 on Wednesday afternoon. That’s serious energy. The wind is offshore from the east-southeast, which keeps things clean. Now, this is expert territory. Over 8 ft, it’s for the lads who know what they’re doin’. The break is Port Isaac, and it’s fairly exposed to the west-northwest swell, which is exactly what we’re gettin’. It’s a fairly consistent spot, and it’s a beginner-friendly break, so on a normal day it’s soft. But on a day like this, with that much power, it’ll be a different beast. It can get crowded sometimes, so get there early.
The water temp is about 66°F, which is a good 4°F warmer than normal for this time of year – feels like a bit of a tropical treat.
The swell hangs around into Thursday the 3rd, with 7 ft in the morning, but the wind is cross-shore and it gets a bit lumpy. By Friday and Saturday the 4th and 5th, the swell is still there – 6 ft to 5 ft – but the wind gets on it again, making it a choppy, onshore mess. Not worth it.
So, for the whole 16-day stretch, the one true standout is Wednesday the 2nd of September at Port Isaac. If you’re an expert and you’ve been waitin’ for some juice, that’s your day. The rest of the time, it’s a long, flat wait.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Sun morning, min 13°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Wed morning. Warm (max 23°C on Tue afternoon, min 16°C on Wed night). Winds decreasing (strong winds from the ESE on Mon night, light winds from the SE by Wed night). | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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 8 | W 10 | W 9 | W 9 | W 9 | WSW 14 | WSW 10 | W 9 | W 9 | W 9 | WNW 10 | WNW 10 | W 9 | WSW 9 | SW 7 | W 8 | W 8 | W 7 | W 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 93 | 66 | 21 | 45 | 26 | 14 | 13 | 18 | 20 | 8 | 6 | 6 | 10 | 32 | 44 | 103 | 77 | 137 | 95 | 67 | 230 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross | cross-on | cross-on | cross-off | on | cross | cross-off | cross-off | cross-off | off | off | off | off | off | off | glassy | cross-on | cross |
High Tide | 12:09PM4.84m | 00:48AM4.62m | 1:32PM4.60m | 2:23AM4.52m | 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 | ||||||||
Low Tide | 6:30PM2.44m | 7:10AM2.59m | 8:06PM2.59m | 8:50AM2.57m | 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 | ||||||||
 |  |  | | | | | |  |  | |  | | |  |  |  | | | | | |
 | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — |
 | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — | — | 8:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | 2 | 2 | — | — | 2 | 2 |
Temp °C | 16 | 15 | 15 | 18 | 17 | 16 | 19 | 19 | 17 | 22 | 22 | 19 | 21 | 23 | 18 | 19 | 20 | 17 | 18 | 18 | 17 |
Feels °C | 11 | 10 | 13 | 14 | 13 | 13 | 17 | 17 | 15 | 15 | 15 | 13 | 18 | 21 | 16 | 13 | 15 | 16 | 18 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 8 | W 5 | NNW 5 | W 9 | NNW 4 | W 9 | W 9 | WSW 10 | W 9 | W 9 | W 9 | WNW 10 | WNW 10 | W 9 | WSW 9 | W 8 | W 8 | W 8 | W 7 | — |
| kJ | 93 | 66 | 15 | 17 | 26 | 10 | 13 | 6 | 20 | 7 | 6 | 6 | 10 | 32 | 44 | 103 | 46 | 137 | 95 | 67 | — |
Swell 2 Height (m) Direction Period (s) | W 16 | W 13 | NNW 5 | W 10 | SW 15 | W 9 | NNW 4 | WSW 14 | NNW 4 | SW 9 | W 14 | W 13 | NE 4 | NE 4 | SW 8 | — | W 11 | — | — | W 12 | — |
| kJ | 5 | 3 | 7 | 45 | 8 | 14 | 1 | 18 | 1 | 3 | 4 | 3 | 1 | 1 | 2 | — | 3 | — | — | 3 | — |
Swell 3 Height (m) Direction Period (s) | W 13 | W 16 | W 8 | SW 15 | — | SW 15 | SW 15 | — | W 14 | SW 14 | W 9 | W 11 | W 8 | SW 8 | W 13 | — | — | — | — | — | — |
| kJ | 3 | 5 | 21 | 9 | — | 8 | 8 | — | 4 | 8 | 2 | 2 | 5 | 3 | 3 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 5 | — | — | N 5 | — | — | NNW 4 | — | E 3 | E 3 | E 3 | ESE 3 | SSW 2 | SSW 3 | S 3 | SW 7 | — | — | — | W 10 |
| kJ | 32 | 27 | — | — | 13 | — | — | 3 | — | 2 | 2 | 7 | 1 | 1 | 1 | 5 | 77 | — | — | — | 230 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 61 | 288 | 67 | 3 | 80 | 37 | 46 | 31 | 15 | 398 | 283 | 218 | 218 | 62 | 46 | 218 | 119 | 0 | 0 | 398 | 393 |
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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