Surf Forecasts:
Port Isaac surf forecast from 9 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 10PM (local time) - 2.5ft (0.8m), 8s period, W swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 10PM (local time) - 6.5ft (2.0m), 9s period, W swell with 693 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 10PM (local time) - 2.5ft (0.8m), 8s 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 (Sep 09) at 10PM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.3m and 5s. 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 2.0m 9s and forecast to arrive on Thursday (Sep 10) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Sep 12) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Wed 9th Sep) | 2.5ft (0.8m) 8s |
| Best Surf | 10PM (Wed 9th Sep) | 2.5ft (0.8m) 8s |
| Most Powerful | 10PM (Thu 10th Sep) | 6.5ft (2.0m) 9s |
Table - best surf conditions forecast for Port Isaac over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
Well, it’s a bit of a slow start for Port Isaac. The first few days are looking pretty grim, with the wind all wrong and the energy just not there. We’ve got a bit of a wait on our hands before things start to get interesting.
We kick off the forecast proper on Monday morning, 14th September. The surf is small, only about 2ft from the west, but the wind is light and cross-offshore, so it’s clean. The combined energy is weak (78). It’s surfable, but nothing to get excited about. Tuesday morning, 15th September is similar with 2ft from the west, clean and cross-off, but that energy is still only just cracking the triple digits (101). The real gem in this early stretch is Tuesday afternoon. The swell is still only 3ft from the west, but the wind drops to a glassy calm. The water temp is about average for this time of year, so no worries there. It’s clean, it’s smooth, and for a beginner-friendly break, it’s a perfect little session.
Wednesday, 16th September is where things get a bit more serious. The morning brings a fresh 19 mph offshore wind from the SSE and a 6ft west swell. That’s a lot of clean swell for a beginner spot, but it’s rideable for the more experienced. The afternoon, though, is a stand-out. The swell jumps to 8ft from the west (10 seconds), and the combined energy is a massive 1170. It’s a powerful, clean, cross-offshore wind. This is for experienced surfers only. The waves will have real punch.
After that, the wind turns onshore again, and we get a few poor days. Saturday morning, 19th September offers a glimmer of hope. A clean 3ft from the west, with a 11-second period and a light offshore breeze from the SE. The energy is a moderate 207. It’s clean, but it’s small. The afternoon is glassy but only 3ft.
The second week is a mixed bag of small, messy waves and clean but tiny surf. Wednesday, 23rd September is the one to watch in the long-range. Wednesday morning is a no-go, but Wednesday afternoon looks promising. We’re looking at a 7ft swell from the west-northwest, with a long 11-second period and a clean cross-offshore wind from the east. The energy is a strong 937. This is a classic, powerful groundswell. For a spot like Port Isaac, which is a bit more protected, the swell direction from the WNW is a bonus. The wind is perfect too. This is the best option of the entire second week, but it’s a long way out, so keep an eye on the forecasts.
Bottom line: The first week is a slow burn with a few clean, small windows. The best of the whole 16 days is the Wednesday afternoon, 16th September for the big wave crew, and Wednesday afternoon, 23rd September as a promising long-range option.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Very mild (max 18°C on Thu morning, min 13°C on Wed night). Winds decreasing (fresh winds from the SSW on Thu afternoon, light winds from the W by Fri afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Mon morning, min 15°C on Fri night). Winds decreasing (fresh winds from the SW on Sat morning, calm by Sun afternoon). | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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 8 | W 8 | W 8 | W 8 | WSW 7 | W 10 | W 10 | W 9 | W 8 | WSW 7 | W 8 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | W 8 | W 10 | W 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 245 | 136 | 60 | 19 | 204 | 598 | 299 | 188 | 105 | 199 | 396 | 400 | 219 | 181 | 102 | 78 | 92 | 82 | 61 | 141 | 190 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | cross-off | cross-off | cross | on | cross-on | cross-off | cross-off | cross | cross-on | cross-on | cross-on | glassy | cross-off | cross | cross-off | cross-off | glassy | cross-off |
High Tide | 4:46AM6.07m | 5:08PM6.58m | 5:33AM6.55m | 5:52PM7.03m | 6:14AM6.92m | 6:32PM7.31m | 6:52AM7.12m | 7:09PM7.38m | 7:28AM7.14m | 7:45PM7.26m | 8:02AM7.00m | 8:19PM6.96m | 8:36AM6.71m | 8:53PM6.53m | |||||||
Low Tide | 11:05AM0.94m | 11:34PM0.53m | 11:50AM0.48m | 00:15AM0.17m | 12:29PM0.16m | 00:52AM-0.02m | 1:05PM0.03m | 1:26AM-0.02m | 1:40PM0.07m | 1:59AM0.15m | 2:13PM0.27m | 2:30AM0.46m | 2:45PM0.61m | 3:01AM0.87m | |||||||
 | |  |  |  | | | | | |  | | | | | | |  | | | | |
 | 6:43 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — |
 | — | 7:47 | — | — | 7:45 | — | — | 7:43 | — | — | 7:40 | — | — | 7:38 | — | — | 7:36 | — | — | 7:34 | — |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 14 | 18 | 17 | 18 | 17 | 17 | 16 | 19 | 18 | 18 | 17 | 17 | 18 | 21 | 21 | 19 | 21 | 22 | 20 |
Feels °C | 11 | 12 | 12 | 13 | 12 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 19 | 21 | 20 | 20 | 22 | 23 | 21 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | W 8 | W 11 | W 10 | W 10 | W 9 | W 8 | W 15 | — | W 10 | W 10 | W 10 | W 9 | W 9 | — | W 8 | W 8 | W 10 | — |
| kJ | 245 | 136 | 60 | 19 | 9 | 598 | 299 | 188 | 105 | 4 | — | 400 | 219 | 181 | 102 | 78 | — | 82 | 61 | 141 | — |
Swell 2 Height (m) Direction Period (s) | — | NNW 5 | NNW 6 | WSW 8 | — | — | — | — | — | — | — | — | NNW 4 | — | — | — | — | W 13 | WNW 11 | — | — |
| kJ | — | 15 | 6 | 11 | — | — | — | — | — | — | — | — | 3 | — | — | — | — | 3 | 40 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | WSW 8 | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 7 | 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 6 | — | — | WSW 4 | WSW 7 | — | — | — | — | WSW 7 | W 8 | — | — | NW 4 | — | — | W 8 | — | — | S 4 | W 10 |
| kJ | 42 | — | — | 11 | 204 | — | — | — | — | 199 | 396 | — | — | 4 | — | — | 92 | — | — | 9 | 190 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 38 | 44 | 0 | 310 | 227 | 38 | 53 | 38 | 0 | 258 | 278 | 113 | 38 | 57 | 0 | 0 | 14 | 0 | 0 | 0 | 0 |
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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