Surf Forecasts:
Maenporth surf forecast from 18 Aug 2026:
- Most powerful swell: Saturday 22 Aug, 4PM (local time) - 3.5ft (1.1m), 6s period, E swell with 80 kJ wave energy.
Best Forecast Surf Conditions for Maenporth this week:
The most powerful waves expected at Maenporth in the next 16 days are 1.1m 6s and forecast to arrive on Saturday (Aug 22) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 9s period and expected on Thursday (Aug 20) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Sat 22nd Aug) | 3.5ft (1.1m) 6s |
Table - best surf conditions forecast for Maenporth over the next 16 days.
The Lowdown
Alright, let's talk Maenporth for the next couple of weeks. I'll be honest, the pickings are slim. The water temp is about 66°, a tad warmer than normal for August, but that's where the good news basically stops for a while.
We're looking at a long, dead spell. From now all the way through to the 22nd of August, there's no real surf. We're talking ankle-slappers at best, with puny energy readings in the low double digits. The winds are mostly cross-off or side-shore, and it’s just flat. There’s one little blip on Saturday the 22nd with a 3ft easterly swell, but the period is a terrible 5 seconds, so it’s all noise and no push. Saturday afternoon does go glassy, but there's nothing to ride on that glass.
That flat run stretches for a full week. On Monday the 24th of August, a 4ft south-west swell tries to show up, but it's got a 4-second period and onshore wind – absolute washing machine conditions.
Then we get to the one real highlight. Thursday the 27th of August is your day. A solid 7ft west-south-west swell rolls in with combined energy hitting 527 to 547 – that’s proper, powerful water moving around. It's an 8-second period, so not the longest lines, but the wind is crucial. Thursday morning you've got a light offshore breeze, and by the afternoon it turns into a clean moderate offshore from the northwest. That means clean, peeling waves at Maenporth. For a sheltered little cove like this, 6-7ft with offshore winds is going to be the standout session of the month. It’s a bit much for the groms, though.
After that, it all drops away again. Friday the 28th is back to waist-high slop with rain. The very end of the period on the 1st of September shows a 6ft south-westerly swell, but the period is short and the forecast says poor conditions.
So, what’s the takeaway? A whole lot of flat and a few small, junk days. The one and only call to action is Thursday the 27th for that 7ft west-south-west swell with clean offshores. That’s as good as it gets.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue night. Warm (max 20°C on Tue morning, min 14°C on Thu night). Winds decreasing (fresh winds from the WNW on Wed afternoon, light winds from the NNW by Thu night). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Fri morning. Very mild (max 18°C on Sat afternoon, min 15°C on Fri 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) | SW 17 | SW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 16 | SSW 15 | E 6 | E 6 | E 5 | E 6 | E 5 | SSW 14 | SSW 13 | SSW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 11 | 11 | 29 | 24 | 24 | 22 | 21 | 20 | 18 | 17 | 17 | 24 | 21 | 80 | 36 | 13 | 29 | 9 | 18 | 18 | 17 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | off | off | cross | cross-off | cross-off | cross | cross-on | cross-off | cross | cross-on | cross-off | glassy | cross-off | cross-on |
High Tide | 10:03PM4.69m | 10:24AM4.37m | 10:50PM4.33m | 11:15AM4.13m | 11:46PM3.99m | 12:20PM3.93m | 00:55AM3.75m | 1:34PM3.84m | 2:10AM3.66m | 2:46PM3.90m | 3:18AM3.74m | 3:48PM4.07m | |||||||||
Low Tide | 4:08PM1.10m | 4:32AM1.34m | 4:46PM1.47m | 5:09AM1.70m | 5:29PM1.85m | 5:52AM2.03m | 6:26PM2.18m | 6:56AM2.28m | 8:10PM2.35m | 8:49AM2.33m | 9:53PM2.21m | 10:10AM2.12m | 10:48PM1.93m | ||||||||
 | |  |  | |  | | |  |  | | |  | | | | |  | | | | |
 | 6:13 | — | — | 6:13 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — |
 | — | 8:34 | — | — | 8:31 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — |
mm | — | — | 3 | — | — | — | — | — | 1 | 3 | 2 | — | 1 | — | — | — | 1 | — | — | 1 | — |
Temp °C | 20 | 19 | 17 | 19 | 19 | 17 | 18 | 18 | 16 | 16 | 17 | 15 | 17 | 18 | 16 | 18 | 17 | 16 | 18 | 18 | 16 |
Feels °C | 17 | 15 | 15 | 14 | 13 | 13 | 14 | 14 | 14 | 13 | 13 | 11 | 14 | 16 | 12 | 15 | 15 | 13 | 16 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 17 | SSW 17 | W 9 | SSW 16 | SSW 15 | SSW 14 | W 10 | W 10 | W 9 | W 8 | W 8 | W 10 | E 6 | E 6 | E 5 | E 6 | E 5 | W 9 | W 9 | W 8 |
| kJ | 11 | 11 | 29 | 202 | 24 | 22 | 21 | 652 | 407 | 175 | 108 | 47 | 65 | 64 | 36 | 13 | 29 | 9 | 13 | 14 | 12 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SSW 16 | — | — | — | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 16 | SSW 15 | WNW 7 | WNW 6 | W 9 | W 9 | W 8 | SSW 14 | SSW 13 | W 4 |
| kJ | — | — | — | 24 | — | — | — | 20 | 18 | 17 | 17 | 24 | 21 | 15 | 7 | 14 | 13 | 13 | 18 | 18 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 16 | SW 16 | — | SW 12 | WSW 9 | W 9 | WNW 6 | WNW 6 | WNW 5 | WNW 5 | — | SSW 13 |
| kJ | — | — | — | — | — | — | — | — | — | 10 | 10 | — | 6 | 25 | 24 | 3 | 4 | 3 | 3 | — | 17 |
Wind waves Height (m) Direction Period (s) | W 6 | W 7 | W 7 | — | W 10 | W 8 | W 9 | — | — | — | N 3 | N 4 | NE 3 | E 6 | NNE 3 | NNW 5 | NNW 2 | N 3 | — | W 5 | — |
| kJ | 132 | 123 | 120 | — | 262 | 387 | 635 | — | — | — | 4 | 10 | 2 | 80 | 1 | 2 | 1 | 1 | — | 4 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 301 | 190 | 167 | 193 | 190 | 248 | 172 | 164 | 18 | 18 | 217 | 171 | 18 | 21 | 210 | 23 | 44 | 90 | 523 | 522 | 518 |
Best forecast wave conditions in South Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Maenporth Surf forecast
The above surf forecast table for Maenporth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Maenporth can be found by selecting the local surf guide option on the grey menu. Our Maenporth 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 (Maenporth) 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 Maenporth 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 South Cornwall? If you are looking for accommodation near Maenporth, camping, hotels and holiday cottages in South Cornwall, consider staying in Falmouth which is 1 km (1 miles) away. Other places in and around South Cornwall where you can find information about places to rent, and car hire include Penryn which is 2 km (1 miles) away, Truro, Camborne and The Lizard.
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