
Surf Forecasts:
Port Isaac surf forecast from 10 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 1PM (local time) - 2.5ft (0.7m), 10s period, W swell with glassy winds.
- Most powerful swell: Thursday 13 Aug, 1PM (local time) - 3.5ft (1.0m), 10s period, W swell with 208 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 1PM (local time) - 2.5ft (0.7m), 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 Wednesday (Aug 12) at 1PM. The primary swell is predicted to be 0.7m and 10s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Port Isaac in the next 16 days are 1.0m 10s and forecast to arrive on Thursday (Aug 13) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Wed 12th Aug) | 2.5ft (0.7m) 10s |
| Best Surf | 1PM (Wed 12th Aug) | 2.5ft (0.7m) 10s |
| Most Powerful | 1PM (Thu 13th Aug) | 3.5ft (1.0m) 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 the next couple of weeks are serving up for our local waters. It’s a bit of a mixed bag, so don’t expect to be scoring every day.
We’re kicking off in the Port Isaac area. Right from the get-go, Monday the 10th has got nothing for us. That tiny 1ft WNW swell with onshore wind is a total write-off. The water temperature is sitting at 66°, which is a touch warmer than normal for this time of year, so at least it’ll be pleasant just sitting on the beach.
Tuesday the 11th is still frustratingly small, with that same 1ft from the west, but at least the morning shows some SE offshore wind. It’s clean, but there’s just no power behind it, and the combined energy is a weak 14. Honestly, it’s a paddling practice day at best. Wednesday the 12th is where we start to see a little life. The morning is cross-shore and not great, but Wednesday afternoon picks up with a glassy 2ft swell from the west, with a period of 10 seconds. The combined energy is still weak at 87, but a glassy surface is a major positive. It’s surfable but very ordinary.
Thursday the 13th gets a bit more size, hitting 3ft, but the wind is a mess—onshore and cross-onshore from the NW and WNW. The energy bumps up to 183 and 196, but it’s all blown out. Friday the 14th through to the end of the week doesn't get any better; consistent onshore and cross-onshore winds with small, weak swell. There's a lot of "poor surf conditions" in the data here, and that sums it up for the next several days. We’re looking at a real flat spell with a gap of about a week of no real surf to speak of.
There’s a glimmer on the 18th (Tuesday morning) with a cross-offshore breeze from the east and a clean 3ft swell, but it’s only a 7-second period and the energy is just 92. It’s still very average.
Now, for the real standout, and I mean the *only* one worth booking leave for, is happening on Saturday the 22nd. A big pulse of swell arrives, with a solid 10ft from the WNW and an 11-second period. The combined energy is massive, reaching 2521 and 2202 throughout the day. The problem? The wind is onshore from the north and NNW all day, which is a killer. The forecast says “poor surf conditions” because of that wind. For an experienced surfer, the sheer size and power might make it interesting, but it’ll be a bumpy, choppy mess. It’s strictly for experts with a big board and a strong paddle.
After that big blowout, the tail end of the period on Monday the 24th and Tuesday the 25th offers some clean, glassy conditions. The swell is small, around 2ft to 3ft from the west, but with a 14-second period on the Monday and 11 seconds on Tuesday, the quality of the waves will be good even if the size is small. The energy is moderate (256 and 146). This would be ideal for a longboard or a funboard, and with glassy conditions and low crowds, it’s a nice end-of-summer session. If you’re a beginner, that’s the window for you. Otherwise, this 16-day forecast is mostly a waiting game.
Stay stoked,
Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Wed morning, min 16°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Thu afternoon, min 15°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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 5 | WNW 8 | W 8 | W 8 | W 11 | W 10 | W 10 | W 10 | W 11 | W 10 | W 10 | W 9 | W 9 | W 8 | W 7 | W 7 | W 8 | W 7 | W 7 | W 7 |
Wave Graph | ||||||||||||||||||||
14 | 22 | 11 | 10 | 60 | 96 | 87 | 115 | 182 | 196 | 149 | 78 | 74 | 137 | 81 | 70 | 40 | 28 | 9 | 9 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | off | cross-off | cross-off | cross | glassy | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | on | on | on | cross-on | on | cross-on |
High Tide | 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 | 8:34AM6.93m | 8:52PM7.05m | |||||||
Low Tide | 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 | 2:46PM0.28m | 3:08AM0.42m | |||||||
— | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | |
8:49 | — | — | 8:46 | — | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — | — | 8:39 | — | — | 8:37 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 19 | 23 | 24 | 21 | 27 | 26 | 19 | 21 | 21 | 19 | 19 | 18 | 17 | 17 | 16 | 16 | 18 | 18 | 16 |
Feels °C | 15 | 17 | 21 | 23 | 20 | 26 | 25 | 18 | 21 | 20 | 20 | 19 | 15 | 15 | 14 | 13 | 13 | 15 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | W 5 | WNW 8 | W 8 | W 8 | W 11 | W 10 | W 10 | W 10 | W 11 | W 10 | W 10 | W 9 | W 9 | W 8 | W 7 | W 7 | W 8 | W 7 | W 7 | WNW 4 |
13 | 22 | 11 | 10 | 60 | 96 | 87 | 115 | 182 | 196 | 149 | 78 | 74 | 137 | 81 | 70 | 40 | 28 | 9 | 3 | |
Swell 2 Height (m) Direction Period (s) | WNW 8 | NNW 4 | NNW 3 | W 9 | W 7 | — | — | NNW 3 | — | — | — | — | — | — | WNW 8 | — | — | N 3 | — | W 7 |
14 | 3 | 1 | 7 | 4 | — | — | 1 | — | — | — | — | — | — | 24 | — | — | 1 | — | 9 | |
Swell 3 Height (m) Direction Period (s) | WSW 6 | SW 7 | W 10 | W 13 | W 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
4 | 2 | 2 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NNW 4 | — | — | — | — | — | — | — | NNW 3 | — | — | WNW 5 | WNW 6 | — | N 4 | NNW 5 | NNW 4 | — | WNW 5 | NNW 3 |
6 | — | — | — | — | — | — | — | 1 | — | — | 25 | 43 | — | 14 | 12 | 5 | — | 8 | 2 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 67 | 15 | 394 | 251 | 3 | 3 | 0 | 53 | 53 | 14 | 61 | 61 | 69 | 8 | 69 | 69 | 69 | 15 | 394 | 288 |
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.











