Mawgan Porth Surf Break

Lat Long: 50.47° N 5.04° W

Mawgan Porth Surf Forecast and Surf Report

Issued: 12 am 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mawgan Porth sea temperature is
18.8° C
1.9° 

Mawgan Porth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Mawgan Porth surf forecast from 19 Aug 2026:

  • Best quality surf: Friday 21 Aug, 7AM (local time) - 3.5ft (1.1m), 9s period, W swell with cross-offshore winds.
  • Most powerful swell: Thursday 20 Aug, 10AM (local time) - 7.5ft (2.3m), 9s period, W swell with 828 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 7AM (local time) - 3.5ft (1.1m), 9s 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 Friday (Aug 21) at 7AM. The primary swell is predicted to be 1.1m and 9s period with a secondary swell of 0.1m and 13s. 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 2.3m 9s and forecast to arrive on Thursday (Aug 20) at 10AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Aug 25) at 10PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Fri 21st Aug)3.5ft (1.1m) 9s
Best Surf 7AM (Fri 21st Aug)3.5ft (1.1m) 9s
Most Powerful10AM (Thu 20th Aug)7.5ft (2.3m) 9s

Table - best surf conditions forecast for Mawgan Porth over the next 16 days.


The Lowdown

Alright, folks, Rusty here. Let’s get straight into what’s on offer for the next couple of weeks. I’ve been staring at the charts for Mawgan Porth, and to be brutally honest, it’s a tough one. We’re looking at a long stretch of mostly grovelly or blown-out conditions. The first real shot at anything decent doesn't land until late in the game.

The whole 16-day window is a bit of a grind. Waves show up, but the wind is almost always in the wrong place. For the first eight days, from Wednesday the 19th of August right through to the end of that week, it’s a write-off. Onshore winds are tearing up the lineup, making it choppy and messy. Even when the swell bumps up to a couple of yards, the wind just ruins it. There’s a brief tease on Friday the 21st with a cleaner look in the morning, but the swell is tiny and weak (combined energy of only 191). Then we get a solid lull, with barely a ripple from Sunday the 23rd through Tuesday the 25th.

The second week opens up with a bit more promise, though it’s still a mixed bag. On Thursday the 27th of August morning, we start to see a real pulse of new swell, hitting 7ft from the WNW with an 11-second period. It’s a groundswell, which means better shape and more push, but the wind is a light cross-onshore. The combined energy jumps up to 954, showing some real grunt. The surf report is calling it ‘marginal’ but that’s the best we’ve seen in a week. That’s probably the morning to have a paddle if you’re desperate, but you’ll be fighting a bit of chop.

The real standout—and I mean the *only* standout in this entire outlook—actually comes on Saturday the 29th of August morning. The wind finally plays ball. It’s a clean, glassy morning with a light easterly offshore breeze and a modest 4ft swell from the WSW at 8 seconds. The combined energy is 226, so it’s not a beast, but the conditions will be perfect. For a river break like Mawgan Porth, that clean, glassy surface is absolute gold, making for some fun, peelable walls. This is your best chance by a mile, but don't expect big waves. Just clean ones.

After that, the wheels come off again. Sunday the 30th through to Tuesday the 1st of September sees a massive jump in swell, with waves hitting 13ft and combined energy surging past 3500. That’s serious power. However, it’s accompanied by brutal onshore winds. For the average punter, this will be a washing machine; it’s strictly for the experienced crew in the heavy stuff. The setup at the beach will be more interesting for the kite surfers than us with paddles. The final days of the forecast show more of the same poor, windy conditions.

So, my verdict: Don’t hold your breath. If you absolutely have to get wet, mark Saturday the 29th of August in your calendar for a clean but small session. Everything else is either flat or blown to bits.

Rusty.

Short Range Forecast

Moderate rain (total 14mm), heaviest on Fri morning. Very mild (max 18°C on Tue night, min 13°C on Fri morning). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Sat morning. Very mild (max 19°C on Mon morning, min 15°C on Fri night). Wind will be generally light.

Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
WNW
9
1.4
W
6
2.1
W
8
2.3
W
9
2.1
WNW
9
1.3
W
9
1
W
8
0.7
W
8
0.6
W
8
1
NNW
6
1.1
NNW
6
0.8
NNW
5
0.4
W
9
0.2
WSW
14
0.2
WSW
14
0.3
W
9
0.3
W
9
0.3
W
8
0.4
WNW
10
1.5
WSW
10
1.9
WSW
9
Wave Graph
Metric surfscale
Energy kJ
248
132
551
828
705
282
133
66
46
64
89
33
24
19
20
14
14
12
42
437
541
Wind (km/h)
20
WNW
30
W
30
W
30
WNW
25
NW
15
N
20
NNE
15
NNW
20
N
25
N
20
N
20
NNE
20
NNE
20
N
15
NE
10
ENE
20
N
15
S
15
WNW
15
W
30
SSE
Wind State
cross-on
on
on
on
cross-on
cross
cross-off
cross
cross-off
cross
cross
cross-off
cross-off
cross
cross-off
off
cross
cross
on
on
cross-off
High Tide
10:13AM5.43m
10:34PM5.22m
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
Low Tide
4:08AM1.28m
4:27PM1.49m
4:48AM1.75m
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
rain showers
part cloud
rain showers
rain showers
clear
part cloud
light rain
rain showers
clear
rain showers
rain showers
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:15
6:16
6:18
6:18
6:20
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:32
8:30
8:29
8:27
8:24
8:22
8:20
 mm
1
4
1
5
1
1
1
7
Temp °C
18
18
17
17
17
16
15
15
15
16
16
17
17
17
17
19
18
17
17
18
17
Feels °C
13
12
12
11
13
13
12
11
11
12
12
14
13
13
14
16
14
16
14
16
13
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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