Surf Forecasts:
Mawgan Porth surf forecast from 18 Aug 2026:
- Best quality surf: Monday 24 Aug, 10PM (local time) - 6.5ft (2.0m), 7s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 7AM (local time) - 8ft (2.5m), 9s period, WSW swell with 1,037 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 7AM (local time) - 1.5ft (0.5m), 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 (Aug 22) at 7AM. The primary swell is predicted to be 0.5m and 10s period with a secondary swell of 0.7m 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 2.5m 9s and forecast to arrive on Tuesday (Aug 25) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 22nd Aug) | 1.5ft (0.5m) 10s |
| Best Surf | 10PM (Mon 24th Aug) | 6.5ft (2.0m) 7s |
| Most Powerful | 7AM (Tue 25th Aug) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Mawgan Porth over the next 16 days.
The Lowdown
Right, grab a coffee, because I’ve been staring at the charts for Mawgan Porth and, well, to be brutally honest, it’s a pretty grim picture for the next couple of weeks. You’re going to need a lot of patience. The forecast is full of wind screaming onshore or cross-onshore, and even when the swell shows up, the conditions just won’t play ball.
Let’s start with the immediate outlook. The first solid bit of recommended surf is a long way off, and there are several days of proper dud conditions to get through first. For the rest of this week and into the weekend, we’ve got a messy run of poor surf. The wind is mostly out of the west-northwest or northwest, blowing straight on or cross-on, turning what little swell there is into a bumpy, chopped-up mess. The water temp is sitting at about 66°, which is a touch warmer than normal for this time of year, but that’s about the only positive.
The first real glimmer of hope is on Saturday, the 22nd of August. The morning is looking glassy, with a light north-easterly puff and only a tiny 1ft west swell creeping in. The wave energy is weak, just 55 (combined energy), so it’s really ordinary conditions, barely surfable. You’ll be scratching for anything. Still, it’s the cleanest we see for a while. If you have a longboard and are desperate, that’s your window. The afternoon turns cross-shore and the swell goes tiny, so don’t get your hopes up for the day.
Sunday the 23rd and Monday the 24th are total write-offs, with 0.7ft to 1.0ft swell. There’s a very long-period groundswell on the Sunday (14 seconds), but it’s so small it’s barely a ripple - not enough to push a limpet off a rock. The energy readings are in the 40s to 20s, so bottom-of-the-barrel stuff.
We then get another big gap of a few days with basically nothing worth paddling for. The wind keeps switching around but never reliably offshore for any decent size.
A slight uptick arrives on Tuesday the 25th of August. The morning brings a 8ft west-southwest swell with 9-second period. That’s a moderate wave energy reading of 845, which is a heap more power than we’ve seen. Now, don’t get too excited - the wind is a moderate cross-offshore from the south-southeast, which will keep the faces reasonably clean, but the guidance says “questionable tide conditions.” This is really for the experienced crew only; 8ft is getting into expert territory. The problem is the afternoon drops to 6ft with a 19 mph cross-offshore breeze, and the quality slides back into poor conditions. If you’re an advanced surfer and the banks are holding, the morning of the 25th is the standout of the whole forecast. But it’s a one-trick pony, and then it’s gone.
The rest of the week into early September is more of the same onshore punishment. There is a tiny window on Thursday the 27th of August with a glassy morning and a 5ft west-southwest swell. The energy is moderate at 264, but the wind is light out of the north-northwest. It’s surfable, but ordinary. The afternoon gets ruined by a cross-onshore. A similar glassy chance appears on Saturday the 29th of August, but the swell is only 3ft from the southwest. Not worth the drive unless you live around the corner.
Look, to be fair, the spot itself is a river-mouth setup, fairly exposed to the west-northwest. If the charts change and a clean westerly groundswell arrives with lighter winds, it could turn on. But based on this outlook, you’re looking at a whole lot of sitting in the car park waiting for the wind to drop.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Tue night. Very mild (max 18°C on Tue morning, min 13°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Fri night. Very mild (max 17°C on Sat morning, min 14°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
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 | WNW 7 | W 9 | W 9 | W 8 | W 9 | W 9 | W 9 | W 8 | W 8 | NNW 5 | W 10 | N 5 | N 5 | WSW 14 | WSW 14 | W 8 | W 9 | W 9 | WSW 9 |
Wave Graph | |||||||||||||||||||||
170 | 166 | 157 | 235 | 287 | 430 | 632 | 553 | 235 | 109 | 66 | 43 | 29 | 31 | 28 | 19 | 19 | 12 | 13 | 14 | 918 | |
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-off | glassy | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off |
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 | — | — | 2 | 1 | — | 3 | — | — | — | — | — | 5 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 17 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 16 | 16 | 16 | 20 | 20 | 17 |
Feels °C | 15 | 14 | 14 | 16 | 12 | 12 | 11 | 13 | 14 | 12 | 11 | 12 | 15 | 14 | 14 | 12 | 13 | 14 | 17 | 17 | 15 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 17 | SW 17 | W 9 | SW 16 | WSW 15 | SW 14 | W 9 | W 9 | W 8 | W 8 | W 8 | N 5 | W 9 | W 9 | W 9 | W 9 | W 8 | W 9 | W 9 | SW 13 |
11 | 11 | 12 | 235 | 10 | 23 | 8 | 553 | 235 | 109 | 66 | 33 | 17 | 24 | 25 | 14 | 14 | 12 | 13 | 13 | 7 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | SW 16 | — | — | — | WSW 14 | WSW 14 | SW 13 | SW 13 | SW 16 | W 10 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | N 4 | SW 14 | SW 13 | — |
— | — | — | 10 | — | — | — | 20 | 19 | 7 | 7 | 10 | 29 | 21 | 21 | 19 | 19 | 3 | 7 | 7 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 16 | SW 16 | SW 13 | SW 15 | SW 12 | — | — | W 6 | WNW 5 | N 5 | — | — |
— | — | — | — | — | — | — | — | — | 10 | 10 | 7 | 9 | 6 | — | — | 2 | 2 | 2 | — | — | |
Wind waves Height (m) Direction Period (s) | WNW 6 | W 6 | WNW 7 | — | W 9 | W 8 | W 9 | — | N 6 | N 6 | NNW 5 | NNW 5 | — | N 5 | N 5 | N 4 | NNW 4 | — | — | SW 4 | WSW 9 |
170 | 166 | 157 | — | 287 | 430 | 632 | — | 102 | 62 | 47 | 43 | — | 31 | 28 | 12 | 10 | — | — | 14 | 918 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 264 | 393 | 131 | 132 | 237 | 221 | 126 | 135 | 44 | 48 | 49 | 49 | 0 | 49 | 56 | 130 | 49 | 63 | 63 | 26 | 2 |
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.










