Surf Forecasts:
Mawgan Porth surf forecast from 29 Aug 2026:
- Most powerful swell: Monday 31 Aug, 4AM (local time) - 10ft (3.0m), 10s period, W swell with 1,490 kJ wave energy.
Best Forecast Surf Conditions for Mawgan Porth this week:
The most powerful waves expected at Mawgan Porth in the next 16 days are 3.0m 10s and forecast to arrive on Monday (Aug 31) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Mon 31st Aug) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Mawgan Porth over the next 16 days.
The Lowdown
Alright, Rusty here, let’s break it down.
I’ve been through the numbers for Mawgan Porth, and to be honest, it’s a tough watch for the next two weeks. We’ve got a solid week of onshore junk and lumpy, choppy water before the wind finally gives us a break. There’s a window of hope right at the start of the second week, but you’ll need to be patient.
The problem is the wind. From Saturday the 29th of August through the end of the first week, it’s mostly cross-onshore, onshore, or howling. The swell is there, but it’s a mess. We’re looking at a Southwest swell around 5ft to 8ft, but the period is short, between 7 to 9 seconds, so it’s just windswell, not much push. The combined energy is moderate to strong (260 to 1263), but it’s all blown out. If you’re a kite surfer, this is your window, because the wind is strong and the waves are choppy. For a paddle surfer, it’s a no-go. The water temp is about average for the time of year, nothing wild.
Then, we get to Saturday the 5th of September. This is the one to circle on the calendar. The morning is still a bit marginal with a 6ft west swell and a light onshore wind, but the afternoon. That’s where it’s at. The wind swings to a light cross-offshore from the southeast, the swell drops to a clean 6ft from the west, with a period of 10 seconds, giving it a bit more shape. The energy is moderate (540). This is the best we’ve got. The surf will be clean, with some decent lines. Crowds are possible at Mawgan Porth, so get out there early or late.
After that, Sunday the 6th and Monday the 7th see the wind messing things up again. Sunday has a fresh cross-onshore, and Monday morning has a clean look with a cross-offshore, but the swell is a bit bigger and the wind is fresh, which kills it. The rest of the second week, from the 8th to the 13th, is a write-off. The swell drops right off, with tiny waves on the 9th and 10th, and the wind is either cross or onshore. Even the 13th has a long period 15-second groundswell, but it’s only 2ft and cross-shore, so it’s barely a ripple.
So, the bottom line: if you’re a surfer, you’re waiting for Saturday afternoon the 5th of September. That’s the standout. The rest is a long gap of poor or no surf. Keep an eye on the forecast, but for now, that’s the truth.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Sat morning. Very mild (max 19°C on Sat morning, min 15°C on Sun night). Winds decreasing (strong winds from the WNW on Sat afternoon, light winds from the SW by Mon night). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Wed night. Very mild (max 19°C on Wed morning, min 16°C on Thu night). Winds increasing (light winds from the SW on Tue morning, strong winds from the WNW by Thu night). | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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 7 | WSW 9 | W 9 | WSW 9 | WSW 8 | W 9 | W 9 | W 10 | W 10 | W 9 | W 9 | W 8 | WSW 7 | WSW 8 | W 8 | W 8 | W 8 | W 8 | W 9 | W 9 | WNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 262 | 1101 | 676 | 366 | 574 | 1464 | 1148 | 652 | 347 | 155 | 148 | 127 | 293 | 713 | 639 | 477 | 428 | 517 | 484 | 484 | 333 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | cross-on | cross-on |
High Tide | 7:00PM6.66m | 7:17AM6.50m | 7:32PM6.75m | 7:50AM6.54m | 8:07PM6.69m | 8:25AM6.45m | 8:43PM6.48m | 9:03AM6.22m | 9:24PM6.14m | 9:46AM5.87m | 10:12PM5.68m | 10:38AM5.44m | 11:12PM5.19m | ||||||||
Low Tide | 12:59PM0.37m | 1:19AM0.25m | 1:30PM0.26m | 1:50AM0.22m | 2:03PM0.29m | 2:23AM0.32m | 2:37PM0.44m | 2:58AM0.56m | 3:15PM0.71m | 3:38AM0.92m | 4:00PM1.10m | 4:27AM1.36m | 4:58PM1.53m | ||||||||
 |  |  |  | |  | |  |  | |  |  | | |  | | | | | | | |
 | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — |
 | — | 8:12 | — | — | 8:09 | — | — | 8:07 | — | — | 8:06 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — |
mm | 6 | — | — | 3 | 3 | 1 | — | — | — | — | — | 1 | 1 | — | 6 | — | — | — | — | — | — |
Temp °C | 19 | 18 | 17 | 18 | 18 | 17 | 16 | 17 | 17 | 18 | 18 | 18 | 19 | 19 | 18 | 18 | 18 | 17 | 17 | 17 | 17 |
Feels °C | 16 | 11 | 13 | 13 | 12 | 12 | 11 | 15 | 15 | 14 | 14 | 14 | 16 | 15 | 15 | 15 | 14 | 12 | 10 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | — | — | W 9 | WSW 9 | — | — | — | W 10 | W 10 | W 9 | — | W 8 | SW 16 | — | SW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WNW 9 |
| kJ | — | — | 676 | 366 | — | — | — | 652 | 347 | 155 | — | 127 | 10 | — | 8 | 21 | 23 | 23 | 20 | 20 | 333 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNW 6 | N 6 | N 5 | SW 17 | SW 16 | — | — | — | — | — | — | — | — | WSW 14 |
| kJ | — | — | — | — | — | — | — | 47 | 16 | 2 | 12 | 10 | — | — | — | — | — | — | — | — | 19 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 18 | W 18 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 6 | 6 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 7 | WSW 9 | — | — | WSW 8 | W 9 | W 9 | — | — | — | W 9 | — | WSW 7 | WSW 8 | W 8 | W 8 | W 8 | W 8 | W 9 | W 9 | — |
| kJ | 262 | 1101 | — | — | 574 | 1464 | 1148 | — | — | — | 148 | — | 293 | 713 | 639 | 477 | 428 | 517 | 484 | 484 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 534 | 235 | 221 | 7 | 75 | 486 | 140 | 153 | 131 | 2 | 7 | 7 | 2 | 19 | 221 | 258 | 769 | 221 | 267 | 7 | 37 |
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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