Surf Forecasts:
Mawgan Porth surf forecast from 9 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 1AM (local time) - 2ft (0.6m), 11s period, W swell with offshore winds.
- Most powerful swell: Thursday 13 Aug, 10AM (local time) - 4ft (1.2m), 11s period, W swell with 329 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 1AM (local time) - 2ft (0.6m), 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 0.6m and 11s period with a secondary swell of 0.3m and 7s. Another secondary swell of 0.1m and 6s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Mawgan Porth in the next 16 days are 1.2m 11s and forecast to arrive on Thursday (Aug 13) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s 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) | 2ft (0.6m) 11s |
| Best Surf | 1AM (Wed 12th Aug) | 2ft (0.6m) 11s |
| Most Powerful | 10AM (Thu 13th Aug) | 4ft (1.2m) 11s |
Table - best surf conditions forecast for Mawgan Porth over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break down what's happening at Mawgan Porth.
Honestly, the outlook is pretty flat for the next week and a half. We’ve got a long stretch of tiny, weak surf and messy wind. The first real chance of anything worth paddling out for isn't until Wednesday the 12th of August, and even then, it's nothing special. The water is a noticeable 66°, which is a touch warmer than usual for this time of year.
The best bet is looking like Tuesday the 18th of August. The swell energy picks up to a moderate level (279), with waves hitting about 5ft from the west. The period is short though, only 7 seconds, so it'll be a bit fat and disorganised. The wind is light from the NW, making it a cross-onshore breeze with just some small ripples. It’s marginal, but it’s the biggest push we see.
Following that, Wednesday the 19th of August morning brings the biggest swell of the whole forecast at 5ft from the NNW (combined energy 327), but the period is still a short 6 seconds. Same light cross-onshore wind. This is only for experienced surfers as it’s over 5ft, and the short period will make it choppy. It’s still only a marginal call.
The very end of the period, from Friday the 21st of August, looks cleaner. The swell drops way back to 3ft or less, but we finally get a proper offshore wind from the east on Friday morning, with moderate energy (86). The waves will be clean, but tiny. This pattern of small, clean surf might last into the weekend.
So, to sum it up, it’s a lean run. The only real standout is the 18th and 19th of August for a bit more size, but it won't be clean. For a river break like Mawgan Porth, these long gaps with no surf are fairly normal. Don't write it off completely; forecasts can change.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Tue afternoon, min 16°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Wed afternoon, min 17°C on Fri afternoon). Mainly fresh winds. | |||||||||||||||||||
Sun 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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) | 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 | WNW 8 | W 8 | W 8 | N 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 16 | 22 | 31 | 23 | 33 | 20 | 13 | 85 | 125 | 139 | 168 | 329 | 242 | 184 | 159 | 152 | 171 | 80 | 58 | 71 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross | cross | cross-off | cross-off | cross-off | off | cross-off | cross | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross | cross-off |
High Tide | 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 | |||||||
 |  | | | | | | | | | | | |  |  | |  |  | | | |
 | — | — | 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 18 | 17 | 17 | 19 | 23 | 24 | 21 | 24 | 24 | 21 | 20 | 20 | 19 | 18 | 18 | 18 | 17 | 16 | 16 |
Feels °C | 17 | 18 | 16 | 14 | 17 | 19 | 20 | 20 | 21 | 20 | 19 | 18 | 19 | 19 | 17 | 16 | 17 | 12 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 9 | WNW 5 | W 5 | W 8 | WNW 8 | WNW 7 | W 11 | W 10 | W 9 | W 9 | W 11 | W 10 | W 10 | W 9 | W 9 | WNW 8 | W 8 | W 8 | W 7 |
| kJ | 16 | 15 | 31 | 13 | 33 | 20 | 11 | 85 | 125 | 139 | 168 | 329 | 242 | 184 | 159 | 152 | 171 | 80 | 58 | 39 |
Swell 2 Height (m) Direction Period (s) | SW 6 | SW 7 | SW 6 | WNW 8 | NNW 4 | N 4 | W 9 | WNW 7 | SW 6 | — | — | — | — | — | — | — | W 13 | — | — | — |
| kJ | 1 | 7 | 6 | 23 | 6 | 1 | 7 | 10 | 1 | — | — | — | — | — | — | — | 3 | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 12 | — | WNW 8 | SW 6 | SW 7 | W 10 | W 13 | SW 12 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 6 | — | 14 | 6 | 7 | 8 | 13 | 6 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | WNW 4 | — | NNW 4 | — | — | SSE 2 | S 6 | — | — | — | — | NNW 3 | NNW 3 | — | NNW 4 | — | N 5 | NNW 5 | N 5 |
| kJ | — | 22 | — | 6 | — | — | 1 | 1 | — | — | — | — | 1 | 1 | — | 7 | — | 28 | 56 | 71 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 237 | 237 | 48 | 48 | 7 | 388 | 217 | 0 | 0 | 48 | 0 | 44 | 49 | 49 | 132 | 255 | 49 | 304 | 299 | 239 |
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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