Surf Forecasts:
Mawgan Porth surf forecast from 9 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 1AM (local time) - 2.5ft (0.7m), 11s period, W swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 4AM (local time) - 5.5ft (1.7m), 7s period, NNW swell with 301 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 1AM (local time) - 2.5ft (0.7m), 11s 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 Wednesday (Aug 12) at 1AM. The primary swell is predicted to be 0.7m and 11s period with a secondary swell of 0.1m and 12s. Another secondary swell of 0.1m and 6s is also forecast. 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 1.7m 7s and forecast to arrive on Sunday (Aug 16) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Aug 11) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 12th Aug) | 2.5ft (0.7m) 11s |
| Best Surf | 1AM (Wed 12th Aug) | 2.5ft (0.7m) 11s |
| Most Powerful | 4AM (Sun 16th Aug) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Mawgan Porth over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
We’ve got a long 16-day window ahead, but truth be told, it’s a rough start. For the first couple of weeks, the surf is just not happening. The first real glimpse of anything worth paddling out for doesn’t show up until the 12th of August, and even then, it’s a rare, quiet moment.
From the 9th through the 11th, it’s flat or nearly flat with messy, cross-onshore winds. The swell is tiny. You’d be better off staying on the beach.
Then, on Wednesday the 12th, things get interesting – but only for a moment. Mawgan Porth (river) sees a tiny pulse of 3ft from the west, with a period around 10 seconds. The wind goes glassy by the afternoon – absolute calm. That’s the standout. The combined swell energy is moderate at 142, and it’s clean. It’s not a big wave, but it’s the only surfable wave in the whole stretch. The water temperature is 66° which is a touch warmer than normal for this time of year, so that’s a nice bonus.
After that, we’re back into a long dry spell. Thursday the 13th through to the 23rd of August offers nothing but cross-shore chop, onshore slop, and tiny swell. The energy is weak to moderate at best, but the conditions are just poor. The 16th of August shows a bit more size – 5ft from the north, but it’s short period (7 seconds) and the winds are still cross-off. It’s clean, but the quality is just not there for a good session.
The real standout, if you can wait, is Monday the 24th of August. That’s the one. The morning shows a solid 5ft swell from the west with an 8-second period, and the combined energy is strong at 432. The wind is light and cross-off, making for clean conditions. It’s the best on offer in the whole 16 days. The afternoon still holds at 5ft, but the wind turns cross-shore, so get on it early.
So, to sum it up: the 12th is a blip of glassy, tiny waves. The 24th is the real target. Don’t bother with the rest.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Tue morning, min 16°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Wed morning, min 17°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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 4 | WNW 5 | WNW 8 | W 8 | WNW 8 | W 13 | W 11 | W 10 | W 9 | W 9 | W 11 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | NNW 6 | NNW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 7 | 16 | 22 | 34 | 23 | 33 | 20 | 13 | 118 | 125 | 142 | 136 | 277 | 237 | 181 | 129 | 97 | 107 | 122 | 95 | 285 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross | cross-on | cross | cross-on | cross-on | cross | cross | cross | cross |
High Tide | 2:54PM5.26m | 3:33AM5.35m | 4:05PM5.69m | 4:37AM5.77m | 5:03PM6.19m | 5:30AM6.18m | 5:52PM6.64m | 6:17AM6.50m | 6:37PM6.94m | 7:00AM6.68m | 7:19PM7.04m | 7:40AM6.69m | 7:58PM6.95m | ||||||||
Low Tide | 9:29PM1.47m | 10:02AM1.35m | 10:38PM1.02m | 11:03AM0.90m | 11:34PM0.54m | 11:53AM0.48m | 00:21AM0.17m | 12:37PM0.18m | 1:04AM-0.04m | 1:19PM0.04m | 1:44AM-0.06m | 1:57PM0.07m | 2:22AM0.10m | ||||||||
 | |  | | | | | | | | | | | |  |  | | |  |  |  | |
 | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — |
 | — | 8:51 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — | — | 8:39 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 1 |
Temp °C | 19 | 19 | 18 | 17 | 17 | 19 | 23 | 23 | 22 | 25 | 24 | 22 | 21 | 21 | 19 | 19 | 19 | 19 | 17 | 17 | 17 |
Feels °C | 18 | 17 | 16 | 14 | 14 | 17 | 19 | 18 | 19 | 24 | 24 | 21 | 19 | 19 | 19 | 19 | 18 | 19 | 12 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 9 | WNW 9 | WNW 5 | WNW 5 | N 4 | WNW 8 | WNW 7 | W 11 | W 10 | W 9 | W 9 | W 11 | W 10 | W 10 | W 9 | W 9 | W 8 | W 8 | W 7 | W 7 |
| kJ | 7 | 16 | 15 | 34 | 14 | 9 | 20 | 11 | 118 | 125 | 142 | 136 | 277 | 237 | 181 | 129 | 97 | 107 | 122 | 69 | 39 |
Swell 2 Height (m) Direction Period (s) | W 9 | SW 6 | SW 7 | SW 6 | WNW 8 | W 8 | N 4 | W 9 | SW 12 | — | — | — | — | — | — | — | — | W 13 | — | — | W 12 |
| kJ | 6 | 1 | 7 | 6 | 23 | 33 | 1 | 7 | 6 | — | — | — | — | — | — | — | — | 3 | — | — | 3 |
Swell 3 Height (m) Direction Period (s) | SW 6 | SW 12 | — | WNW 8 | SW 6 | SW 7 | W 10 | W 13 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 6 | — | 14 | 7 | 7 | 8 | 13 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WNW 4 | — | N 4 | — | SE 2 | SSE 3 | S 6 | — | — | — | — | NW 3 | NW 3 | — | — | — | — | NNW 6 | NNW 7 |
| kJ | — | — | 22 | — | 9 | — | 1 | 3 | 1 | — | — | — | — | 2 | 2 | — | — | — | — | 95 | 285 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 402 | 237 | 237 | 48 | 49 | 7 | 402 | 238 | 0 | 0 | 0 | 0 | 49 | 49 | 48 | 49 | 221 | 49 | 67 | 268 | 247 |
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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