Surf Forecasts:
Mawgan Porth surf forecast from 8 Sep 2026:
- Best quality surf: Saturday 12 Sep, 4AM (local time) - 3.5ft (1.1m), 8s period, W swell with glassy winds.
- Most powerful swell: Friday 11 Sep, 1AM (local time) - 7ft (2.2m), 9s period, W swell with 810 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 4AM (local time) - 3.5ft (1.1m), 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 (Sep 12) at 4AM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.4m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Mawgan Porth in the next 16 days are 2.2m 9s and forecast to arrive on Friday (Sep 11) at 1AM. 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+) | 4AM (Sat 12th Sep) | 3.5ft (1.1m) 8s |
| Best Surf | 4AM (Sat 12th Sep) | 3.5ft (1.1m) 8s |
| Most Powerful | 1AM (Fri 11th Sep) | 7ft (2.2m) 9s |
Table - best surf conditions forecast for Mawgan Porth over the next 16 days.
The Lowdown
Alright, let’s put it in feet and miles per hour for those who think that way. Look at Mawgan Porth, a river mouth break that’s beginner-friendly and fairly consistent for swell, but the wind is going to be the story for a while. Over this 16-day window, the first week is rough. The wind is locked in from the north-west, cross or cross-onshore, and it’s tearing things up. The swell’s there—Tuesday the 8th we get 6ft of west swell at 9 seconds, but with 18-22 mph NNW wind it’s a mess. That combined swell energy is 627, which is moderate, but it’s all for nothing. Wednesday the 9th, 5ft at 342, still cross-on. Thursday the 10th, a tiny 2ft wave with 65 energy, cross-shore and weak. Friday the 11th, back up to 6ft and 455, but lumpy.
Saturday the 12th, same. The weekend, the 13th, a change. Sunday morning we get *onshore* wind from the west-northwest at 6 mph, with 5ft west swell at 9 seconds, energy 396. It’s marginal, tide might be a factor, but it’s the first real opportunity.
Then we hit a few dry days. Monday 14th and Tuesday 15th are poor. Tuesday 15th afternoon, we get a *cross-offshore* north wind at 15 mph, with 4ft west swell at 11 seconds, energy 269. For the first time, it’s clean. But the swell’s a bit small.
Thursday 17th morning is a standout. A *cross-offshore* north-northeast breeze at 12 mph, 6ft west swell at 8 seconds, energy 470. Decent size, clean, short period but punchy for a river mouth.
But the absolute best is Friday 18th September. Morning: an east-southeast breeze at just 3 mph, cross-offshore, with 5ft west-northwest swell at 11 seconds, energy 525. That’s a proper clean wave. Afternoon: *dead flat calm*, glassy, with 4ft west swell at 11 seconds, energy 405. Mawgan Porth (Cornwall) will be perfect. That is the session to wait for.
Saturday 19th and Sunday 20th are smaller and cleaner but less exciting. Monday 21st: a near gale from the northwest at 31 mph, with 4ft swell but a huge 16-second period, energy 971. That’s a lot of energy with a very long groundswell, but the wind blows it out. That long period won’t cooperate at a beach/river setup either—breaks too straight for surfing, maybe better for kites.
Water temp around the 18th is about average for this time of year, nothing weird.
So the two to target: Thursday 17th morning for a bit of size, and Friday 18th all day, especially the glassy afternoon, as the clear winner.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Mon night. Very mild (max 18°C on Thu morning, min 14°C on Mon night). Winds decreasing (fresh winds from the NW on Tue afternoon, light winds from the W by Wed afternoon). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu night. Very mild (max 18°C on Sun afternoon, min 14°C on Fri afternoon). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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 | WNW 9 | W 9 | WNW 9 | W 8 | W 8 | WSW 6 | W 9 | W 9 | W 8 | W 8 | W 9 | W 10 | W 8 | W 9 | W 9 | W 9 | W 9 | W 9 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 627 | 554 | 573 | 292 | 129 | 49 | 41 | 90 | 810 | 455 | 235 | 156 | 207 | 228 | 283 | 389 | 313 | 234 | 155 | 123 | 116 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | on | cross-off |
High Tide | 4:00PM5.69m | 4:31AM5.74m | 4:52PM6.23m | 5:18AM6.20m | 5:36PM6.65m | 5:59AM6.54m | 6:16PM6.92m | 6:36AM6.73m | 6:54PM6.99m | 7:12AM6.75m | 7:29PM6.87m | 7:47AM6.62m | 8:04PM6.58m | ||||||||
Low Tide | 9:59AM1.38m | 10:33PM0.96m | 10:53AM0.87m | 11:22PM0.49m | 11:38AM0.44m | 00:03AM0.14m | 12:17PM0.15m | 00:40AM-0.03m | 12:54PM0.03m | 1:15AM-0.02m | 1:28PM0.07m | 1:48AM0.15m | 2:02PM0.27m | 2:19AM0.45m | |||||||
 |  |  |  | |  | |  |  | | | | |  | | | | | | | | |
 | 6:43 | — | — | 6:45 | — | — | 6:47 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — |
 | — | 7:50 | — | — | 7:47 | — | — | 7:45 | — | — | 7:44 | — | — | 7:42 | — | — | 7:38 | — | — | 7:37 | — |
mm | 1 | — | — | — | — | — | — | — | 1 | — | — | — | — | 1 | 1 | — | — | 1 | — | — | — |
Temp °C | 16 | 16 | 16 | 14 | 15 | 15 | 18 | 18 | 17 | 15 | 15 | 14 | 16 | 16 | 17 | 17 | 18 | 19 | 20 | 20 | 19 |
Feels °C | 9 | 9 | 10 | 10 | 13 | 13 | 13 | 13 | 14 | 11 | 12 | 11 | 12 | 11 | 14 | 17 | 18 | 19 | 19 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | W 9 | — | — | W 9 | WNW 9 | W 8 | W 8 | WSW 8 | — | W 9 | W 8 | W 8 | W 9 | W 10 | — | SW 13 | W 9 | W 9 | W 9 | W 9 | W 8 |
| kJ | 627 | — | — | 292 | 129 | 49 | 41 | 11 | — | 455 | 235 | 156 | 207 | 228 | — | 7 | 313 | 234 | 155 | 123 | 116 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | WSW 8 | WSW 8 | WNW 8 | W 11 | — | — | — | W 17 | N 4 | — | — | — | SW 13 | — | SW 12 | SW 12 | WNW 12 |
| kJ | — | — | — | — | 56 | 34 | 21 | 9 | — | — | — | 6 | 1 | — | — | — | 7 | — | 6 | 6 | 15 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | N 5 | N 6 | N 5 | — | — | — | — | — | — | W 15 | — | — | — | — | — | — | W 12 |
| kJ | — | — | — | — | 21 | 10 | 2 | — | — | — | — | — | — | 4 | — | — | — | — | — | — | 3 |
Wind waves Height (m) Direction Period (s) | — | WNW 9 | WNW 9 | N 6 | — | — | SSW 2 | WSW 6 | W 9 | — | NNW 5 | N 4 | — | — | W 8 | W 9 | — | — | — | — | — |
| kJ | — | 554 | 573 | 50 | — | — | 1 | 90 | 810 | — | 32 | 10 | — | — | 283 | 389 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 135 | 237 | 93 | 31 | 29 | 1 | 42 | 205 | 131 | 44 | 44 | 48 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 0 |
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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