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 0.7m 3s period and expected on Tuesday (Aug 25) at 7AM.
| 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 get into it. Look, I've got to be straight with you – the next 16 days at Mawgan Porth (North Cornwall) are a genuine struggle. There's a big gap at the start with absolutely nothing worth paddling out for, and it takes a while before we see any real glimmer of hope. The water is sitting at 66° which is a touch warmer than normal for this time of year, but that's about the only bright spot for a while.
From Wednesday 19th August right through to Tuesday 1st September, it's a write-off. The surf is either too small, too messy, or the wind is just ruining any chance of a decent wave. We get a bit of a pulse on Thursday 20th with a 7ft swell from the WNW, but a 30 km/h onshore wind just chops it all to bits. The combined swell energy is a moderate 718, but it's just not surfable. There's a few days around the 22nd and 23rd where it goes clean but the swell drops away to nothing – 0.7ft to 2ft – so you're just floating around. It's a long, dry spell.
The first time we see anything even remotely interesting is on Thursday 27th August afternoon. We get a 5ft swell from the west, with a moderate 420 combined energy, and the wind is a clean cross-off from the SSE at 20 km/h. The conditions are described as clean, but the forecast is only marginal. It's not a standout, but it's the first sign of life in a week and a half.
Then, after another week of mostly poor or onshore slop, we finally get to Thursday 3rd September morning and afternoon. This is the one to keep an eye on. The swell is pumping up to 8ft from the WSW, with a very strong 1304 combined energy. The wind is a clean cross-off from the SSE, though it's a fresh 30 km/h breeze. The conditions are still only described as marginal, but that's the biggest, cleanest window we've got. With that size, it's one for the experienced crew only – 8ft is no joke. Keep it on the radar, but don't hold your breath given how far out it is.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Fri morning. Very mild (max 18°C on Wed night, min 15°C on Thu night). Winds decreasing (fresh winds from the W on Wed night, light winds from the ENE by Sat morning). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Tue afternoon. Warm (max 22°C on Mon morning, min 16°C on Sat night). Winds increasing (light winds from the NE on Sun morning, strong winds from the ESE by Mon night). | ||||||||||||||||||||
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 | W 9 | WSW 14 | WSW 14 | WSW 9 | WSW 14 | WSW 13 | WSW 13 | WNW 10 | SW 9 | W 9 | SW 8 | W 7 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 710 | 627 | 293 | 136 | 86 | 32 | 65 | 40 | 24 | 19 | 19 | 34 | 18 | 17 | 17 | 10 | 21 | 42 | 136 | 168 | 206 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off | off | off | off | cross-off | cross-off | cross | cross-off | cross-off | on |
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 | 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 | 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 | 1 | — | 3 | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 3 | — | 3 | — | — |
Temp °C | 17 | 17 | 16 | 15 | 15 | 15 | 18 | 18 | 18 | 18 | 18 | 19 | 22 | 22 | 20 | 20 | 20 | 18 | 20 | 21 | 17 |
Feels °C | 11 | 12 | 13 | 11 | 10 | 11 | 16 | 15 | 15 | 14 | 14 | 15 | 14 | 14 | 12 | 17 | 18 | 17 | 14 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 14 | WSW 14 | W 9 | W 8 | W 8 | WNW 6 | NNW 6 | NNW 6 | N 5 | N 4 | WSW 10 | WSW 9 | WSW 9 | NE 4 | WSW 13 | WNW 10 | SW 9 | W 9 | W 8 | W 7 | W 7 |
| kJ | 8 | 21 | 293 | 136 | 86 | 17 | 42 | 31 | 11 | 3 | 10 | 34 | 8 | 3 | 17 | 10 | 21 | 42 | 50 | 168 | 206 |
Swell 2 Height (m) Direction Period (s) | — | — | WSW 14 | SW 13 | SW 13 | W 8 | W 10 | W 9 | W 9 | W 9 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | W 8 | SW 8 | WNW 10 | SW 8 | N 6 | SSW 8 | SW 12 |
| kJ | — | — | 18 | 7 | 7 | 32 | 65 | 40 | 24 | 13 | 19 | 19 | 18 | 17 | 6 | 3 | 19 | 35 | 2 | 86 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SW 16 | SW 16 | SW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | W 8 | — | N 4 | W 9 | SW 8 | W 8 | NNE 5 | — | SW 13 | WNW 12 | — |
| kJ | — | — | — | 10 | 10 | 10 | 22 | 21 | 21 | 19 | 5 | — | 1 | 6 | 3 | 5 | 4 | — | 6 | 27 | — |
Wind waves Height (m) Direction Period (s) | W 9 | WNW 9 | N 5 | N 5 | N 5 | N 5 | — | — | — | — | N 3 | N 4 | E 3 | ESE 3 | ESE 3 | ENE 3 | — | WSW 4 | SW 8 | — | — |
| kJ | 710 | 627 | 27 | 58 | 47 | 21 | — | — | — | — | 1 | 2 | 8 | 6 | 5 | 9 | — | 24 | 136 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 563 | 135 | 221 | 44 | 69 | 207 | 48 | 0 | 63 | 48 | 49 | 49 | 26 | 271 | 210 | 387 | 387 | 221 | 22 | 267 | 43 |
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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