Surf Forecasts:
Mawgan Porth surf forecast from 20 Aug 2026:
- Best quality surf: Saturday 22 Aug, 4AM (local time) - 1.5ft (0.5m), 8s period, W swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 10AM (local time) - 7ft (2.1m), 9s period, W swell with 710 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 4AM (local time) - 1.5ft (0.5m), 8s 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 (Aug 22) at 4AM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.6m and 5s. 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 2.1m 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 0.5m 3s period and expected on Monday (Aug 24) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 22nd Aug) | 1.5ft (0.5m) 8s |
| Best Surf | 4AM (Sat 22nd Aug) | 1.5ft (0.5m) 8s |
| Most Powerful | 10AM (Thu 20th Aug) | 7ft (2.1m) 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 cookin’.
Alright, straight up, this is a tough one for Mawgan Porth. The whole 16-day window is a bit of a struggle, if I’m honest. There’s a big ol’ gap of nothing worthwhile from now until the end of the month, with the first real chance of anything being a tiny, weak wave on Saturday the 22nd. But even that’s a hard sell.
The first whisper of anything surfable is on the morning of Saturday the 22nd of August. We’re looking at a tiny 2ft swell from the west, with a period of 10 seconds. The combined energy is a weak 129, so it’s not got much punch. The wind is a light offshore from the ENE, which will keep the surface clean, but it’s going to be small and gutless. The afternoon is even smaller, dropping to 2ft. It’s a beginner-friendly day if you’re desperate, but the crowds are possible here, and it’s not going to be any kind of highlight.
The following day, Sunday the 23rd, is a write-off. The swell just fades away to nothing. Then we have a string of days from Monday the 24th right through to the end of the month with zero swell. Some days have strong offshore winds, but with no waves, it’s irrelevant.
Now, the first week of September shows a bit more size, but the quality is still poor. We see a jump in swell around the 31st of August, with a 10ft swell from the west, but the wind is a fresh cross-onshore from the WSW, making it a lumpy, messy mess. The combined energy is a massive 2446, so there’s real power, but it’s unsurfable with that wind. That’s a day for the experts only, and even then, it’s not good.
The best of a bad bunch might be the morning of Tuesday the 1st of September. We’ve got a 6ft swell from the WNW, with a period of 9 seconds, and a gentle cross-onshore breeze. The combined energy is a moderate 490. It’s still not clean, with a fair chop on it, but it’s the most size you’ll get with the least amount of wind hassle. It’s a river break, so it can handle a bit of size, but it’s not going to be a day to write home about.
So, the honest truth? There’s no standout. No day is truly good. The best on offer is that Tuesday morning, September 1st, where the swell is moderate and the wind is lightest, but it’s still a cross-onshore breeze. For a beginner, the Saturday the 22nd is the only safe bet, but the waves are tiny. For the rest, it’s a waiting game. The water temperature is about average for the time of year, so no wetsuit surprises there.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu morning. Very mild (max 18°C on Sat afternoon, min 15°C on Thu night). Winds decreasing (fresh winds from the WNW on Thu morning, light winds from the E by Fri night). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Tue night. Warm (max 22°C on Tue morning, min 17°C on Sun morning). Mainly strong winds. | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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 9 | WNW 9 | W 9 | W 8 | W 8 | W 8 | W 10 | W 9 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | W 8 | WNW 10 | W 9 | W 9 | SW 7 | W 8 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 710 | 627 | 293 | 136 | 86 | 32 | 65 | 40 | 21 | 19 | 19 | 20 | 19 | 18 | 7 | 19 | 43 | 57 | 99 | 82 | 67 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross-on | cross | off | cross-off | cross-off | cross-off | cross | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 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 | 4:24AM4.90m | 4:44PM5.27m | 5:04AM5.32m | 5:21PM5.72m | ||||||||
Low Tide | 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 | 10:41AM1.71m | 11:07PM1.44m | 11:20AM1.28m | 11:43PM1.03m | ||||||||
 |  |  | | | | | | |  | | |  | |  | | |  | | |  | |
 | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — |
 | — | 8:30 | — | — | 8:29 | — | — | 8:27 | — | — | 8:24 | — | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — |
mm | 2 | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 4 | — | — | 2 |
Temp °C | 17 | 17 | 15 | 15 | 15 | 15 | 17 | 18 | 17 | 18 | 18 | 19 | 21 | 21 | 20 | 22 | 22 | 18 | 20 | 20 | 18 |
Feels °C | 11 | 12 | 11 | 10 | 10 | 12 | 15 | 15 | 14 | 15 | 15 | 16 | 14 | 14 | 13 | 17 | 20 | 17 | 15 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 14 | WSW 14 | W 9 | W 8 | W 8 | N 5 | NNW 5 | N 5 | N 4 | N 4 | WSW 10 | WSW 9 | N 4 | W 9 | NNE 5 | WNW 10 | W 9 | W 9 | SW 7 | W 8 | W 8 |
| kJ | 8 | 21 | 293 | 136 | 86 | 13 | 30 | 20 | 10 | 3 | 10 | 16 | 3 | 6 | 4 | 19 | 43 | 57 | 99 | 82 | 57 |
Swell 2 Height (m) Direction Period (s) | — | — | WSW 14 | SW 13 | SW 13 | W 8 | W 10 | W 9 | W 9 | W 9 | W 8 | WSW 14 | W 9 | WSW 13 | W 8 | NNE 4 | SW 8 | SW 8 | W 8 | SW 7 | SW 8 |
| kJ | — | — | 18 | 7 | 7 | 32 | 65 | 40 | 14 | 14 | 5 | 20 | 7 | 18 | 6 | 2 | 9 | 10 | 50 | 54 | 67 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SW 16 | SW 16 | WNW 5 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | W 10 | WSW 14 | SW 8 | SW 13 | SW 8 | SW 13 | SW 13 | SW 12 | SW 12 | WNW 11 |
| kJ | — | — | — | 10 | 10 | 10 | 22 | 21 | 21 | 19 | 19 | 2 | 19 | 3 | 7 | 3 | 7 | 7 | 6 | 6 | 24 |
Wind waves Height (m) Direction Period (s) | W 9 | WNW 9 | N 5 | N 5 | NNW 5 | — | — | — | — | — | N 4 | N 4 | E 3 | NE 4 | ESE 2 | — | — | SSW 3 | — | — | — |
| kJ | 710 | 627 | 18 | 56 | 36 | — | — | — | — | — | 3 | 5 | 5 | 7 | 1 | — | — | 1 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 264 | 560 | 221 | 44 | 69 | 245 | 48 | 0 | 0 | 16 | 26 | 49 | 0 | 374 | 153 | 207 | 245 | 22 | 1 | 217 | 42 |
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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