Surf Forecasts:
Mawgan Porth surf forecast from 18 Aug 2026:
- Best quality surf: Saturday 22 Aug, 10AM (local time) - 4ft (1.2m), 6s period, NNW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 10AM (local time) - 6.5ft (2.0m), 9s period, W swell with 646 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 10AM (local time) - 4ft (1.2m), 6s period with NNW 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 (Aug 22) at 10AM. The primary swell is predicted to be 1.2m and 6s period with a secondary swell of 0.5m and 9s. 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 2.0m 9s and forecast to arrive on Thursday (Aug 20) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 2s period and expected on Tuesday (Aug 25) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sat 22nd Aug) | 4ft (1.2m) 6s |
| Best Surf | 10AM (Sat 22nd Aug) | 4ft (1.2m) 6s |
| Most Powerful | 10AM (Thu 20th Aug) | 6.5ft (2.0m) 9s |
Table - best surf conditions forecast for Mawgan Porth over the next 16 days.
The Lowdown
Alright folks, let’s talk about what we’ve got at Mawgan Porth for the next couple of weeks. I’ll be honest, it’s a tough outlook. There’s nothing in the 16-day window that gets me excited.
The first time you could even think about getting wet is Saturday morning, August 22nd. The waves are small – about 4 feet from the NNW, but the period is short at 6 seconds, so they’re weak. The combined swell energy is a low 157, so there’s not much behind them. The wind is light and cross-offshore from the NE, so it will be clean, but the conditions are very ordinary. For a brand new surfer it might be fun, but for everyone else, it’s a skip.
Then we hit a big flat spell. Sunday the 23rd gives you a tiny 3 feet from the north with a rubbish 5 second period (energy of 70). From Monday the 24th through Tuesday the 25th morning, it’s practically flat – less than 2 feet. That’s three days of barely anything. Monday morning the 24th looks glassy with no wind, but with waves only 1 foot from the west, you’re better off swimming.
Things try to improve Tuesday afternoon, August 25th. We get 5 feet from the west at 10 seconds, with a clean cross-offshore wind from the SSE and a moderate energy of 369. But even that is called “poor surf conditions.” The wind is a fresh 18 mph, so it’ll be a battle just to get out.
From there, it’s all onshore or cross-onshore wind. Wednesday the 26th has 3 feet and a gentle cross-onshore – choppy. Thursday the 27th morning has 5 feet from the west, but with a strong 28 mph SSE wind. It might be clean in direction, but the wind is going to mess it up. By the start of September, we see bigger swell – 8 feet on Tuesday the 1st of September from the west – but the wind is cross-onshore and strong, and the energy is pumping (795 to 857). At that size and with those winds, forget paddling – this is kite surfing territory. It’s blown out, lumpy, and for experts only.
So the best you’re looking at is Saturday morning, August 22nd, and that’s a slim pick. For a spot that is usually fairly consistent, this is an unusually long and poor run. The water temp is about 66°F, which is a touch warmer than normal for the time of year, so at least you won’t be cold while you’re waiting for nothing.
Forecasts can change, and it rarely stays this bad for long, but for now? Leave the board in the car.
Rusty
Short Range ForecastLight rain (total 7mm), mostly falling on Tue night. Very mild (max 18°C on Tue morning, min 14°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Sat night. Very mild (max 18°C on Sat morning, min 15°C on Fri morning). Winds decreasing (fresh winds from the N on Fri afternoon, calm by Sat morning). | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | WNW 6 | W 6 | W 7 | W 9 | W 9 | W 8 | W 9 | WNW 9 | W 9 | W 8 | N 6 | N 5 | NNW 6 | NNW 6 | W 9 | N 5 | WSW 14 | WSW 14 | W 9 | W 9 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 165 | 143 | 134 | 199 | 246 | 419 | 646 | 577 | 282 | 133 | 91 | 53 | 100 | 43 | 14 | 27 | 19 | 20 | 13 | 14 | 12 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | cross-on | cross-on | cross | cross-off | cross | cross | cross-off | cross | cross-off | cross-off | cross-off | cross | glassy | on | cross |
High Tide | 9:53PM5.75m | 10:13AM5.43m | 10:34PM5.22m | 10:57AM4.97m | 11:25PM4.73m | 11:55AM4.57m | 00:36AM4.36m | 1:20PM4.36m | 2:10AM4.29m | 2:52PM4.47m | 3:30AM4.52m | 3:57PM4.83m | |||||||||
Low Tide | 3:48PM1.02m | 4:08AM1.28m | 4:27PM1.49m | 4:48AM1.75m | 5:13PM1.94m | 5:40AM2.17m | 6:19PM2.31m | 6:58AM2.45m | 7:54PM2.45m | 8:37AM2.43m | 9:24PM2.25m | 9:51AM2.12m | 10:24PM1.87m | ||||||||
 | |  | | | | | | |  | | | | |  |  | |  | | |  | |
 | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — |
 | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — | — | 8:29 | — | — | 8:27 | — | — | 8:24 | — | — | 8:22 | — |
mm | — | — | 3 | — | — | 3 | — | — | 1 | 1 | 1 | 1 | 1 | 2 | 3 | — | 1 | — | — | 1 | — |
Temp °C | 18 | 18 | 17 | 18 | 18 | 17 | 17 | 17 | 16 | 15 | 15 | 16 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 16 |
Feels °C | 15 | 15 | 14 | 14 | 12 | 12 | 12 | 13 | 14 | 11 | 9 | 13 | 17 | 14 | 13 | 13 | 14 | 15 | 17 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 17 | W 7 | W 9 | SW 16 | W 10 | SW 14 | WNW 9 | W 9 | W 8 | W 8 | W 8 | NNW 6 | NNW 6 | N 5 | W 9 | W 9 | W 8 | W 9 | W 9 | W 4 |
| kJ | 11 | 11 | 134 | 199 | 10 | 28 | 8 | 577 | 282 | 133 | 64 | 33 | 100 | 43 | 12 | 24 | 14 | 12 | 13 | 14 | 5 |
Swell 2 Height (m) Direction Period (s) | — | — | SW 17 | SW 16 | — | WSW 15 | — | WSW 14 | WSW 14 | SW 13 | SW 13 | SW 13 | W 9 | WNW 6 | NW 5 | WSW 14 | W 6 | WNW 5 | N 4 | SW 13 | W 8 |
| kJ | — | — | 12 | 10 | — | 23 | — | 21 | 18 | 7 | 7 | 7 | 36 | 12 | 5 | 19 | 3 | 4 | 3 | 7 | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 16 | SW 16 | SW 16 | WSW 15 | W 9 | W 9 | — | WSW 14 | WSW 14 | SW 14 | — | SW 13 |
| kJ | — | — | — | — | — | — | — | — | — | 10 | 10 | 10 | 21 | 24 | 14 | — | 19 | 20 | 7 | — | 7 |
Wind waves Height (m) Direction Period (s) | WNW 6 | W 6 | — | — | W 9 | W 8 | W 9 | — | N 4 | N 5 | N 6 | N 5 | — | — | — | N 5 | N 4 | N 4 | — | W 4 | — |
| kJ | 165 | 143 | — | — | 246 | 419 | 646 | — | 6 | 58 | 91 | 53 | — | — | — | 27 | 15 | 8 | — | 9 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 264 | 221 | 131 | 207 | 221 | 211 | 135 | 126 | 44 | 48 | 245 | 135 | 0 | 12 | 246 | 0 | 63 | 56 | 491 | 491 | 486 |
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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