Surf Forecasts:
Mawgan Porth surf forecast from 12 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 10PM (local time) - 3ft (0.9m), 9s period, W swell with glassy winds.
- Most powerful swell: Tuesday 18 Aug, 1AM (local time) - 5.5ft (1.7m), 7s period, WNW swell with 293 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 10PM (local time) - 3ft (0.9m), 9s period with W swell.
Best Forecast Surf Conditions for Mawgan Porth this week:
The surf forecast for Mawgan Porth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 10PM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.2m and 3s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Mawgan Porth in the next 16 days are 1.7m 7s and forecast to arrive on Tuesday (Aug 18) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Sunday (Aug 16) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Wed 12th Aug) | 3ft (0.9m) 9s |
| Best Surf | 10PM (Wed 12th Aug) | 3ft (0.9m) 9s |
| Most Powerful | 1AM (Tue 18th Aug) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Mawgan Porth over the next 16 days.
The Lowdown
Right, folks. Rusty here. Let’s have a look at what the next couple of weeks are shaping up like for Mawgan Porth.
Honestly, straight up, I’m struggling to find you a single session worth paddling out for in the whole sixteen-day run. Every single forecast window gets a big fat zero from me. The numbers just aren't there. We’ve got a long, flat, or poor stretch ahead, with no real standouts to get excited about.
The water is sitting at 66°F right now, which is much warmer than normal for this time of year – a solid 4°F above average – so if you’re just having a dip, it’s lovely, but for surfing? It’s a tough watch.
We start off on Wednesday the 12th with tiny 3ft swell from the west and a cross-off wind. The combined energy is weak (125), and it’s just not enough to do anything with. That pattern sticks around into Thursday the 13th, where we see a bit more height – a touch over 3ft – and a longer 11-second period from the west, which gives us that moderate energy (269). But the wind swings cross-shore and then cross-on, trashing any hope of a clean face. Friday the 14th is onshore and choppy, and the weekend is a write-off with fresh, lumpy cross-shore winds and poor surf quality.
Into the next week, Monday the 17th and Tuesday the 18th see tiny swell and strong onshore winds, making it a complete mess. The energy climbs a bit on Tuesday afternoon (236), but when it’s all wind-bump and onshore, it’s not worth your time. By the 20th, the swell drops and the energy fades, and we’re looking at a few days of very small, weak surf.
We get a little pulse of long-period groundswell on the 27th of August – that’s Thursday. It’s 4ft from the WNW with a 11-second period and the combined energy hits a strong 380. But again, the wind is straight onshore and the forecast is for rain, so the quality will be poor. That’s the closest we get to something interesting, and it’s still a no-go.
Because Mawgan Porth is a river break and fairly consistent, it’s a bit of a surprise to see such a blank run. But when the conditions line up this poorly for so long, it’s just one of those periods. Keep an eye on it – forecasts can change – but for now, there’s nothing to recommend. I’d save the gas and find something else to do.
Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Wed morning, min 16°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Mon afternoon. Very mild (max 19°C on Mon afternoon, min 15°C on Sat afternoon). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | |||||||||||||||
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 10 | W 9 | W 9 | W 11 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 7 | W 7 | WSW 4 | WNW 7 | W 7 | W 6 | W 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 125 | 110 | 175 | 269 | 237 | 184 | 129 | 153 | 132 | 114 | 94 | 59 | 26 | 23 | 15 | 8 | 17 | 293 | 111 | 67 | 118 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross | cross-on | on | on | cross-on | cross-off | cross | cross | cross | cross-off | cross | cross | cross-on | on | cross-on | cross-on | on | cross-on |
High Tide | 5:52PM6.64m | 6:17AM6.50m | 6:37PM6.94m | 7:00AM6.68m | 7:19PM7.04m | 7:40AM6.69m | 7:58PM6.95m | 8:18AM6.55m | 8:37PM6.67m | 8:56AM6.26m | 9:15PM6.25m | 9:33AM5.88m | 9:53PM5.75m | ||||||||
Low Tide | 11:53AM0.48m | 00:21AM0.17m | 12:37PM0.18m | 1:04AM-0.04m | 1:19PM0.04m | 1:44AM-0.06m | 1:57PM0.07m | 2:22AM0.10m | 2:35PM0.27m | 2:58AM0.40m | 3:11PM0.60m | 3:33AM0.81m | 3:48PM1.02m | ||||||||
 | |  | | |  |  | | | | | | | | |  | | | | |  | |
 | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — |
 | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — | — | 8:39 | — | — | 8:37 | — | — | 8:37 | — | — | 8:35 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | — | — | — | 3 |
Temp °C | 27 | 27 | 23 | 20 | 21 | 19 | 18 | 17 | 18 | 17 | 16 | 16 | 15 | 15 | 16 | 18 | 19 | 18 | 18 | 18 | 19 |
Feels °C | 23 | 23 | 24 | 19 | 21 | 19 | 17 | 14 | 16 | 12 | 10 | 11 | 10 | 11 | 12 | 14 | 15 | 14 | 15 | 15 | 18 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 9 | W 9 | W 11 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 7 | W 7 | W 9 | W 16 | W 7 | N 4 | SW 17 |
| kJ | 125 | 110 | 175 | 269 | 237 | 184 | 129 | 153 | 132 | 114 | 94 | 55 | 26 | 23 | 15 | 8 | 6 | 5 | 111 | 3 | 12 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 13 | — | — | — | WSW 8 | W 18 | W 18 | N 4 | — | — | SW 17 | SW 17 | — |
| kJ | — | — | — | — | — | — | — | — | 3 | — | — | — | 6 | 7 | 6 | 3 | — | — | 11 | 11 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 11 | W 10 | SW 18 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 12 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 3 | — | — | — | — | — | — | N 4 | N 5 | N 5 | N 5 | N 5 | N 4 | N 4 | — | WSW 4 | WNW 7 | N 4 | W 6 | W 6 |
| kJ | — | 3 | — | — | — | — | — | — | 7 | 27 | 45 | 59 | 21 | 11 | 7 | — | 17 | 293 | 10 | 67 | 118 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 2 | 0 | 37 | 237 | 7 | 132 | 237 | 48 | 276 | 299 | 298 | 299 | 413 | 267 | 247 | 404 | 477 | 766 | 786 | 69 |
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.
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