Mawgan Porth Surf Break

Lat Long: 50.47° N 5.04° W

Mawgan Porth Surf Forecast and Surf Report

Issued: 6 pm 18 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, 4AM (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, WNW swell with 791 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 4AM (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 4AM. The primary swell is predicted to be 1.1m and 9s period with a secondary swell of 0.1m and 14s. Another secondary swell of 0.7m 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 2.3m 9s and forecast to arrive on Thursday (Aug 20) at 10AM. 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 10PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Fri 21st Aug)3.5ft (1.1m) 9s
Best Surf 4AM (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. Gotta be straight with you – it’s a tough watch out there at Mawgan Porth for the next couple of weeks. We’re looking at a long stretch of poor conditions, so let’s get into it.

Right off the bat, there’s nothing worth paddling out for. The wind is howling from the WNW at 16 mph on Tuesday the 18th, with a weak 4 ft swell that’s only got a short period of 6 seconds. The water temperature is 66°, which is a touch warmer than normal for this time of year, but that’s not gonna help the surf. The combined swell energy is weak at just 154, and the report doesn’t lie – it’s poor. We stay in the doldrums through Wednesday the 19th and into Thursday the 20th, where the swell bumps up to 8 ft with moderate energy (799) but the cross-onshore wind is lumpy and fresh. That’s a no-go.

There’s a tiny glimmer on Friday morning the 21st. We get a brief window of clean conditions with a light offshore breeze from the ENE. The waves are tiny at 3 ft, period a short 8 seconds, and the energy is weak at just 195. The rating says it’s surfable but very ordinary – and I’d agree. It’s a beginner-level day for a longboard if you’re desperate, but don’t expect much.

After that, the bottom drops out. From Friday afternoon all the way through to the end of the month, it’s a desert. We’re talking day after day of weak swells, onshore or cross winds, and poor surf conditions. The swell period drops to a pathetic 5 seconds on the 22nd, and the energy dips below 100. There’s nothing to get excited about until the very end of the run.

The best we see in the whole 16 days is late in the forecast, around Saturday the 29th of August into Sunday the 30th. The swell picks back up to 6 ft from a W direction, with period stretching to 9 seconds, giving us a moderate combined energy of 550. But – and it’s a big but – the wind is still cross-on from the WNW. It’s messy, lumpy, and choppy. For a river break like Mawgan Porth, a long-period swell like that (9-10 seconds) can actually make the shape worse, and with that cross-on breeze it’s just not clean. It’s onshore, so you’re fighting it.

Honestly, if I were you, I’d look for something else to do for the next fortnight. The consistency here is poor, and the forecasts haven’t turned in our favour. Conditions look more interesting for kite surfing than paddle surfing on those bigger, windier days. It’s a blank run, and for this area, that’s just how it goes sometimes. Stay hopeful, forecasts can change, but right now? Not one standout day.

Rusty.

Short Range Forecast

Moderate rain (total 12mm), heaviest on Thu night. Very mild (max 18°C on Tue afternoon, min 15°C on Thu night). Winds decreasing (fresh winds from the WNW on Wed night, light winds from the E by Thu night).

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Fri afternoon. Very mild (max 17°C on Sat night, min 13°C on Fri afternoon). Wind will be generally light.

Tue
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
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
1
1
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)
1.3
W
6
1.3
W
7
1.2
W
9
1.3
W
9
1.9
W
8
2.3
WNW
9
1.9
WNW
9
1.3
W
9
1
W
8
0.7
W
8
1
N
5
1.1
N
5
0.9
N
5
0.7
N
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
Wave Graph
Metric surfscale
Energy kJ
143
157
235
287
430
791
639
282
136
64
51
65
40
23
24
19
20
13
14
12
Wind (km/h)
25
WNW
20
W
20
WNW
30
W
30
W
30
WNW
25
NW
15
NNE
10
ENE
25
N
25
N
25
N
20
N
20
NNE
25
NNE
20
N
20
NNE
10
N
15
NNW
5
ENE
Wind State
on
on
on
on
on
cross-on
cross-on
cross-off
off
cross
cross
cross
cross
cross-off
cross-off
cross
cross-off
cross
cross-on
cross-off
High Tide
9:53PM5.75m
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
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
part cloud
rain showers
rain showers
clear
rain showers
part cloud
clear
rain showers
light rain
light rain
rain showers
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
<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
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:35
8:32
8:30
8:29
8:27
8:24
8:22
 mm
3
1
4
3
1
5
1
Temp °C
18
18
18
18
17
17
17
16
15
14
15
15
16
17
16
16
16
17
17
16
Feels °C
14
16
13
12
12
12
13
13
13
9
10
10
12
14
12
12
14
15
14
15
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Mawgan Porth:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mawgan Porth surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest