Surf Forecasts:
Mawgan Porth surf forecast from 30 Aug 2026:
- Most powerful swell: Monday 31 Aug, 1AM (local time) - 10ft (3.0m), 9s period, W swell with 1,542 kJ wave energy.
Best Forecast Surf Conditions for Mawgan Porth this week:
The most powerful waves expected at Mawgan Porth in the next 16 days are 3.0m 9s and forecast to arrive on Monday (Aug 31) at 1AM. 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+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Mon 31st Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Mawgan Porth over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s coming up for Mawgan Porth. I’ll be straight with you – it’s a rough run for a good while. The whole first part of the forecast is a write-off. From Sunday the 30th of August right through to the 11th of September, the wind and weather are just making a mess of things. You’ve got fresh cross-onshore winds, lumpy and choppy conditions, and all the swell is being blown out. There’s a heap of energy in the water – up into the four-digit figures on the 4th of September (1465) – but it’s all wind-affected, short-period junk. That’s not for paddling; if anything, that’s a kite surfer’s window with that strong breeze and big lump. So, brace yourselves for a gap of nearly two weeks with absolutely nothing worth getting wet for.
Now, ‘Mawgan Porth’ is a river break, beginner-friendly when it’s clean, and it’s fairly exposed to the west-northwest, which is its optimum swell direction. The water temperature is about average for this time of year – nothing unusual there.
Things finally turn around on Saturday the 12th of September. That morning is the real standout. The wind swings around to a light cross-offshore from the SSE, only 6 mph, and the conditions are described as ‘clean’. You’ve got a solid 8 ft swell rolling in from the west-northwest with a period of 10 seconds, giving you a combined moderate wave energy (1001). That’s proper groundswell, with some good shape and power. The break is listed as ‘inconsistent’ though, so don’t expect it to be pumping non-stop, but the sets that come through will be well worth it. Crowds are possible here, so get down early. The difficulty is beginner-level, but that size is pushing it for learners – it’s more of an intermediate and above session.
Following that, Sunday the 13th of September morning is another highlight, but it comes with a big caveat. The swell bumps up to 10 ft from the west-northwest with a 10-second period, giving you very strong wave energy (1710). That is serious size – only for experts. The wind is offshore from the east at 16 mph, keeping the faces clean, but at that height it’s going to be a beast. Long period and big at a river break can mean it’s a bit tricky too, but for the brave, it’ll be a special session.
Monday the 14th of September is a nice way to finish the run. The swell drops back to a much friendlier 5 ft from the west, with a gentle offshore easterly breeze at 9 mph and clean conditions. It won’t have the power of the weekend, but for a quiet, clean paddle with good shape, that’s a lovely way to start the week. Crowds are still possible, but it’s a Monday so you might get lucky.
So, to sum it up: a long, frustrating wait, but the second weekend and that Monday offer some real quality. The clear best is the Saturday morning the 12th of September – solid size, good period, no wind messing it up. It’s been a while coming, but it’ll be worth it.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Sun morning. Very mild (max 18°C on Sun morning, min 16°C on Sat night). Winds decreasing (strong winds from the SW on Sun afternoon, light winds from the W by Mon night). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Very mild (max 19°C on Wed morning, min 16°C on Tue night). Winds increasing (light winds from the SW on Tue night, strong winds from the W by Thu night). | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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) | WSW 9 | WSW 8 | W 9 | W 10 | W 10 | W 10 | W 9 | W 9 | W 8 | W 7 | W 8 | W 8 | W 8 | W 8 | W 8 | WNW 9 | WNW 9 | WNW 11 | W 6 | W 8 | W 9 |
Wave Graph | |||||||||||||||||||||
380 | 509 | 1542 | 1334 | 891 | 407 | 188 | 120 | 84 | 286 | 572 | 588 | 529 | 553 | 839 | 1445 | 858 | 821 | 166 | 387 | 390 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | on | on | cross-on | on | cross | cross-on | cross-on | cross-on | on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross |
High Tide | 7:17AM6.50m | 7:32PM6.75m | 7:50AM6.54m | 8:07PM6.69m | 8:25AM6.45m | 8:43PM6.48m | 9:03AM6.22m | 9:24PM6.14m | 9:46AM5.87m | 10:12PM5.68m | 10:38AM5.44m | 11:12PM5.19m | 11:48AM5.04m | 00:35AM4.84m | |||||||
Low Tide | 1:30PM0.26m | 1:50AM0.22m | 2:03PM0.29m | 2:23AM0.32m | 2:37PM0.44m | 2:58AM0.56m | 3:15PM0.71m | 3:38AM0.92m | 4:00PM1.10m | 4:27AM1.36m | 4:58PM1.53m | 5:33AM1.79m | 6:21PM1.87m | ||||||||
6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | |
— | 8:09 | — | — | 8:07 | — | — | 8:06 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — | — | 7:57 | — | |
mm | 5 | 5 | 3 | — | — | — | — | — | — | — | — | 1 | — | — | 1 | — | — | — | — | — | — |
Temp °C | 18 | 18 | 17 | 16 | 17 | 17 | 17 | 17 | 17 | 19 | 19 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 15 | 15 | 15 |
Feels °C | 14 | 13 | 11 | 11 | 12 | 15 | 15 | 14 | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 10 | 10 | 11 | 11 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | N 4 | — | — | — | W 10 | W 10 | W 9 | W 9 | SW 16 | SW 16 | WSW 16 | SW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WNW 11 | WNW 11 | WNW 10 | SW 13 | W 9 |
1 | — | — | — | 891 | 407 | 188 | 120 | 10 | 10 | 24 | 8 | 21 | 23 | 23 | 20 | 349 | 821 | 144 | 7 | 390 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | N 5 | N 5 | — | — | — | — | — | — | — | — | — | SW 14 | WSW 14 | SW 14 | — | SW 13 |
— | — | — | — | — | 13 | 2 | — | — | — | — | — | — | — | — | — | 8 | 19 | 7 | — | 7 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 18 | W 18 | SW 17 | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | 6 | 6 | 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 9 | WSW 8 | W 9 | W 10 | — | — | — | — | W 8 | W 7 | W 8 | W 8 | W 8 | W 8 | W 8 | WNW 9 | WNW 9 | — | W 6 | W 8 | — |
380 | 509 | 1542 | 1334 | — | — | — | — | 84 | 286 | 572 | 588 | 529 | 553 | 839 | 1445 | 858 | — | 166 | 387 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 382 | 486 | 140 | 140 | 126 | 7 | 6 | 207 | 221 | 298 | 217 | 246 | 44 | 44 | 762 | 563 | 237 | 237 | 49 | 7 | 2 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Mawgan Porth Surf forecast
The above surf forecast table for Mawgan Porth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mawgan Porth can be found by selecting the local surf guide option on the grey menu. Our Mawgan Porth 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 (Mawgan Porth) 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 Mawgan Porth 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 Mawgan Porth, camping, hotels and holiday cottages in North Cornwall, consider staying in Newquay 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 Padstow which is 11 km (7 miles) away, Bodmin, Truro and Saint Austell.










