Surf Forecasts:
Mawgan Porth surf forecast from 20 Aug 2026:
- Best quality surf: Saturday 22 Aug, 4AM (local time) - 2.5ft (0.8m), 5s period, NNW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 7PM (local time) - 5.5ft (1.7m), 9s period, W swell with 495 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 4AM (local time) - 2.5ft (0.8m), 5s period with NNW 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 4AM. The primary swell is predicted to be 0.8m and 5s period with a secondary swell of 0.5m and 8s. 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 9s and forecast to arrive on Thursday (Aug 20) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Tuesday (Aug 25) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 22nd Aug) | 2.5ft (0.8m) 5s |
| Best Surf | 4AM (Sat 22nd Aug) | 2.5ft (0.8m) 5s |
| Most Powerful | 7PM (Thu 20th Aug) | 5.5ft (1.7m) 9s |
Table - best surf conditions forecast for Mawgan Porth over the next 16 days.
The Lowdown
Alright, so the first wave worth paddling out for is Saturday the 22nd, with a bit of a dry spell before that. The water temp is 65.8°, feeling a touch warmer than normal.
The real highlight lands on Thursday the 3rd of September. That morning, the wind is dead calm, glassy as a pond, and we’ve got a 5.9ft swell from the NW with a short period of 6 seconds. The combined energy is moderate at 331. That’s a clean, fun session at Mawgan Porth if you’re riding a river mouth wave. The break is fairly consistent, so you’ll get plenty of waves.
Saturday the 22nd in the morning is a secondary option: a light offshore wind from the east at 6 mph, with a tiny 2.9ft swell from the NNW, period 6 seconds, and energy weak at 122. It’s clean but small—good for beginners or a quiet paddle.
After the 3rd of September morning, the surf quality drops off again. The rest of the 16 days is mostly onshore, choppy, and not worth getting excited about. There’s a big swell around the 28th and 29th, with waves up to 9.8ft to 11.5ft, but the wind is howling onshore, turning it into a messy, lumpy mess. That’s kiteboarding territory, not a surfer’s wave.
Plan for the 3rd of September morning. That’s the only true standout.
Short Range ForecastLight rain (total 3mm), mostly falling on Thu morning. Very mild (max 17°C on Thu morning, min 14°C on Fri night). Winds decreasing (fresh winds from the WNW on Thu morning, light winds from the NE by Sat night). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Tue morning. Warm (max 22°C on Mon morning, min 16°C on Sun night). Winds increasing (calm on Sun morning, fresh winds from the ESE by Mon night). | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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 | W 9 | W 8 | WNW 8 | W 8 | NNW 6 | W 9 | W 9 | WSW 14 | WSW 14 | WSW 14 | W 9 | WSW 13 | W 8 | WNW 10 | WNW 9 | W 9 | SW 8 | W 8 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 710 | 627 | 339 | 136 | 90 | 32 | 56 | 40 | 24 | 19 | 18 | 19 | 8 | 17 | 7 | 19 | 28 | 39 | 229 | 258 | 276 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross-on | cross | off | cross-off | cross-off | glassy | cross | cross-off | off | off | off | cross-off | cross-off | cross-off | cross | cross-off | cross-on |
High Tide | 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 | 4:24AM4.90m | 4:44PM5.27m | 5:04AM5.32m | 5:21PM5.72m | ||||||||
Low Tide | 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 | 10:41AM1.71m | 11:07PM1.44m | 11:20AM1.28m | 11:43PM1.03m | ||||||||
 |  |  | |  | | | | | | |  | | | | | |  |  |  |  | |
 | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — |
 | — | 8:30 | — | — | 8:29 | — | — | 8:27 | — | — | 8:24 | — | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — |
mm | 2 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 2 | 1 | 3 | 1 |
Temp °C | 17 | 17 | 16 | 15 | 15 | 16 | 17 | 17 | 17 | 18 | 19 | 18 | 22 | 22 | 19 | 21 | 21 | 18 | 19 | 18 | 17 |
Feels °C | 11 | 12 | 12 | 10 | 10 | 14 | 14 | 14 | 14 | 15 | 16 | 16 | 14 | 15 | 12 | 18 | 19 | 17 | 15 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | SW 14 | WNW 9 | W 9 | W 8 | WNW 8 | W 6 | NNW 6 | N 5 | N 5 | N 4 | WSW 11 | WSW 9 | W 9 | W 9 | W 8 | WNW 10 | WNW 9 | W 9 | W 9 | W 8 | W 9 |
| kJ | 8 | 627 | 339 | 136 | 90 | 16 | 56 | 19 | 11 | 3 | 12 | 17 | 6 | 6 | 6 | 19 | 28 | 39 | 57 | 258 | 276 |
Swell 2 Height (m) Direction Period (s) | — | WSW 14 | WSW 14 | SW 13 | SW 13 | W 8 | W 10 | W 9 | W 9 | W 9 | W 9 | WSW 14 | WSW 9 | WSW 13 | SW 13 | SW 8 | SW 8 | SW 5 | W 12 | SSW 8 | SW 8 |
| kJ | — | 21 | 18 | 7 | 7 | 32 | 45 | 40 | 24 | 13 | 6 | 19 | 8 | 17 | 7 | 3 | 10 | 9 | 3 | 114 | 49 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SW 16 | SW 16 | SW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | — | N 4 | SW 9 | SW 8 | W 8 | SW 13 | SW 8 | — | W 10 | — |
| kJ | — | — | — | 10 | 10 | 10 | 21 | 21 | 21 | 19 | 18 | — | 1 | 3 | 3 | 5 | 7 | 18 | — | 52 | — |
Wind waves Height (m) Direction Period (s) | W 9 | — | N 5 | N 6 | N 5 | N 5 | — | — | — | — | N 4 | N 4 | ENE 3 | E 3 | ESE 3 | SSE 3 | S 3 | SSE 3 | SW 8 | — | — |
| kJ | 710 | — | 25 | 72 | 34 | 24 | — | — | — | — | 2 | 2 | 3 | 4 | 8 | 7 | 2 | 2 | 229 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 560 | 221 | 44 | 69 | 49 | 48 | 0 | 0 | 49 | 22 | 26 | 23 | 386 | 207 | 267 | 26 | 22 | 4 | 137 | 95 | 7 |
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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