Surf Forecasts:
Mawgan Porth surf forecast from 30 Aug 2026:
- Best quality surf: Saturday 5 Sep, 10PM (local time) - 3ft (0.9m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 1AM (local time) - 10ft (3.0m), 9s period, W swell with 1,476 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 10PM (local time) - 3ft (0.9m), 10s 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 Saturday (Sep 05) at 10PM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.4m and 4s. The wind is predicted to be cross-offshore as the swell arrives.
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. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Sep 06) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sat 5th Sep) | 3ft (0.9m) 10s |
| Best Surf | 10PM (Sat 5th Sep) | 3ft (0.9m) 10s |
| 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
Alright, Rusty here. This forecast for Mawgan Porth is a tough one. The river mouth break is getting hammered by the wind most of the next 16 days, and the surf quality is just a write-off. Water temp is a touch warmer than normal at 65°F for this time of year.
We kick off Sunday, August 30th, with a 5ft WSW swell, but it’s a cross-on mess with 19 mph winds. The wave energy is weak (367). That pattern holds through the first week – Monday the 31st brings a 10ft W swell, but again, cross-on winds make it lumpy and choppy. The energy is strong (1386), but it’s all wasted. Tuesday through Thursday stays poor, with sizes dropping to 4ft and 5ft, but the wind never lets up.
There’s a small window on Saturday, September 5th. We get a 5ft W swell with an 11-second period, and the wind goes gentle cross-shore. The energy is moderate (551). It’s a marginal call, but it’s the first real chance for a few clean-ish waves. Nothing special, just a “maybe worth a look” morning.
Then it goes flat. From Sunday, September 6th, through Thursday, September 10th, the swell drops to under 3ft, and the energy is weak (down to 27). A gap of several days with no real surf.
The second week has a better look. Tuesday, September 8th, has a 5ft W swell with a 10-second period and cross-shore wind – marginal, but possible. The best calls come on Saturday, September 12th, and Sunday, September 13th. On the 12th, we get clean offshore winds from the ENE at 6 mph, with a 3ft W groundswell (11-second period). The energy is low (184), but that offshore wind will make it glassy and clean. Sunday the 13th is similar: offshore breeze, 3ft W swell, and clean conditions. These are the standouts of the whole run – small, clean, and rideable on a longboard. Still, it’s inconsistent, so don’t expect a lot.
So, a rough 16 days for quality surf. The swell is there, but the wind wrecks it. For the rare clean windows, grab a log and enjoy the quiet. If you’re a kite surfer, the strong cross-on days in the first week with 10-12ft W swell and 19-22 mph winds could be a better bet than a paddle.
- Rusty
Short Range ForecastModerate rain (total 11mm), heaviest on Sun afternoon. Very mild (max 19°C on Sun morning, min 15°C on Mon morning). Winds decreasing (strong winds from the SW on Sun morning, light winds from the W by Mon night). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Wed night. Warm (max 20°C on Wed afternoon, min 16°C on Fri morning). Mainly fresh winds. | ||||||||||||||||||||
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 12 | W 8 | W 11 | W 11 | W 10 | W 10 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 366 | 521 | 1476 | 1403 | 983 | 407 | 188 | 120 | 105 | 269 | 464 | 334 | 329 | 347 | 963 | 535 | 994 | 543 | 360 | 234 | 113 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | off |
High Tide | 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 | 2 | 5 | 3 | 1 | — | — | — | — | — | — | — | 1 | — | — | — | 1 | 1 | — | — | — | — |
Temp °C | 19 | 18 | 17 | 16 | 16 | 16 | 17 | 18 | 17 | 19 | 20 | 18 | 18 | 17 | 19 | 19 | 16 | 16 | 16 | 16 | 15 |
Feels °C | 14 | 12 | 12 | 10 | 11 | 13 | 15 | 15 | 16 | 15 | 16 | 15 | 17 | 15 | 16 | 16 | 14 | 12 | 14 | 14 | 14 |
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 | W 8 | WSW 15 | W 12 | WNW 11 | W 11 | W 11 | W 10 | W 10 | W 9 |
| kJ | 1 | — | — | — | 983 | 407 | 188 | 120 | 10 | 10 | 24 | 8 | 329 | 23 | 963 | 180 | 994 | 543 | 360 | 234 | 113 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | N 6 | N 5 | N 5 | N 5 | — | — | — | — | WSW 15 | — | WSW 15 | — | WSW 14 | WSW 14 | SW 14 | NNW 4 | N 5 |
| kJ | — | — | — | — | 16 | 14 | 4 | 2 | — | — | — | — | 21 | — | 23 | — | 20 | 19 | 7 | 6 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 18 | W 18 | SW 17 | — | — | — | — | — | — | — | — | — | — | — | SW 13 | SW 13 |
| kJ | — | — | — | — | — | 6 | 6 | 12 | — | — | — | — | — | — | — | — | — | — | — | 7 | 7 |
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 | — | — | N 4 | — | — |
| kJ | 366 | 521 | 1476 | 1403 | — | — | — | — | 105 | 269 | 464 | 334 | — | 347 | — | 535 | — | — | 6 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 239 | 486 | 140 | 237 | 126 | 6 | 6 | 43 | 19 | 491 | 217 | 221 | 258 | 7 | 44 | 135 | 49 | 51 | 49 | 43 | 0 |
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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