Porthtowan Surf Break

Lat Long: 50.28° N 5.25° W

Porthtowan Surf Forecast and Surf Report

Issued: 12 am 27 Jul 2026 (local time)

Forecast update in  hr  min

Today's Porthtowan sea temperature is
18.6° C
1.9° 

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


Porthtowan surf forecast from 27 Jul 2026:

  • Best quality surf: Tuesday 28 Jul, 1AM (local time) - 2ft (0.6m), 10s period, WNW swell with glassy winds.
  • Most powerful swell: Monday 27 Jul, 7AM (local time) - 5ft (1.6m), 9s period, WNW swell with 366 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 28 Jul, 1AM (local time) - 2ft (0.6m), 10s period with WNW swell.

Best Forecast Surf Conditions for Porthtowan this week:

The surf forecast for Porthtowan over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 28) at 1AM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.8m and 6s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Porthtowan in the next 16 days are 1.6m 9s and forecast to arrive on Monday (Jul 27) at 7AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 12s period and expected on Tuesday (Jul 28) at 10AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Tue 28th Jul)2ft (0.6m) 10s
Best Surf 1AM (Tue 28th Jul)2ft (0.6m) 10s
Most Powerful 7AM (Mon 27th Jul)5ft (1.6m) 9s

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


The Lowdown

Alright, let's talk Porthtowan. We've got a long stretch of small, messy surf ahead, with only a couple of brief windows where things might clean up enough for a proper session. The main issue is the wind, which is mostly onshore or cross-onshore, and the wave energy just isn't there for the most part.

The first real chance to get a paddle in comes on Tuesday, July 28th. Tuesday morning we've got a light cross-offshore breeze from the SSW, which is a positive, and the waves are coming in at 3ft from the WNW. The period is a middling 9 seconds, and the combined energy is a weak 110. It's not going to be a classic, but it's clean and rideable. Then Tuesday afternoon, it turns glassy. The wind drops to nothing, and the swell goes a little smaller to 2ft from the same direction, with a combined energy of only 84. It's flat, but it'll be smooth as a lake. For a beginner-friendly spot like Porthtowan, these are the windows to aim for. The water temp is about what you'd expect for this time of year.

After that, it goes pretty quiet. From Wednesday the 29th right through to Monday, August 3rd, it's mostly poor, choppy, and small. There's a lot of nothing happening. The swell is tiny, often under 2ft, and the wind is all over the shop. The best of a bad lot on Monday, August 3rd is a clean morning with a 1ft cross-offshore wind from the east, but it's a real knee-slapper of a wave.

Now, things get a bit more interesting but not necessarily better. On Thursday, August 6th, the swell picks up to 5ft to 6ft from the SW, but it's a short period windswell (7 seconds) with a cross-onshore wind. The combined energy jumps to 227 and then 303, which is moderate, but the quality is poor. It's going to be a choppy, lumpy mess. This setup is more interesting for a kite surfer than a paddle surfer, to be honest.

The biggest swell of the run hits on Saturday, August 8th. We're looking at 7ft from the west with a better 9-10 second period and combined energy of 626 and 646. That's strong wave energy. But the wind is howling cross-onshore from the WNW at 9-12 mph. This is a powerful, unsurfable mess. That's strictly for the experts if anyone even tries, and honestly, I wouldn't. It's a tough paddle with no reward.

The outlook ends with a return to strong, onshore winds and messy, mid-sized waves from August 10th onward. The best I can honestly say is to keep an eye on the Tuesday, July 28th for a glassy, if tiny, paddle. The standout is that window on the 28th—it's not the biggest, but it's the cleanest by a long shot.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 22°C on Tue morning, min 16°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 18°C on Wed night, min 15°C on Thu night). Wind will be generally light.

Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
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
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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
W
7
0.7
WNW
10
0.6
WNW
10
0.8
WNW
9
0.7
WNW
9
0.7
WNW
9
0.7
WNW
8
0.7
WNW
8
0.5
W
8
1.3
WNW
6
1.2
WNW
7
1.3
WNW
6
1.5
WNW
7
1.2
WNW
6
0.8
WNW
7
0.7
WNW
5
0.4
WNW
5
0.3
W
9
0.4
WSW
8
0.4
WSW
8
0.8
N
5
Wave Graph
Metric surfscale
Energy kJ
138
94
72
110
84
79
72
70
33
139
135
134
223
110
58
24
7
14
22
22
29
Wind (km/h)
15
WNW
20
WNW
5
WSW
10
SSW
5
WNW
5
NNE
5
WNW
20
WNW
15
WSW
20
WNW
20
WNW
20
WNW
25
NNW
25
NW
15
WNW
15
N
15
NNW
10
N
5
NE
10
N
10
NE
Wind State
on
cross-on
glassy
cross-off
glassy
glassy
on
on
cross-on
cross-on
on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
glassy
cross-on
cross-off
High Tide
4:35AM4.88m
4:57PM5.16m
5:18AM5.17m
5:37PM5.49m
5:56AM5.44m
6:14PM5.78m
6:32AM5.67m
6:48PM6.01m
7:05AM5.84m
7:22PM6.17m
7:38AM5.94m
7:55PM6.23m
8:12AM5.97m
8:29PM6.20m
Low Tide
10:56AM1.59m
11:22PM1.41m
11:37AM1.29m
00:02AM1.11m
12:14PM1.00m
00:37AM0.86m
12:49PM0.78m
1:12AM0.67m
1:22PM0.63m
1:44AM0.57m
1:55PM0.57m
2:17AM0.54m
2:27PM0.60m
2:50AM0.60m
clear
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:41
5:41
5:43
5:45
5:47
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:12
9:10
9:08
9:07
9:06
9:05
9:02
 mm
Temp °C
19
19
17
22
22
19
21
21
18
18
18
16
16
16
16
17
16
15
21
21
18
Feels °C
17
17
17
22
23
20
21
20
18
14
15
12
12
11
13
14
13
13
19
19
16
  • 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 Porthtowan Surf forecast

The above surf forecast table for Porthtowan provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Porthtowan can be found by selecting the local surf guide option on the grey menu. Our Porthtowan 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 (Porthtowan) 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 Porthtowan 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.

Porthtowan is 8 km (5 miles) from Camborne. If you plan a holiday in North Cornwall, look for hotels and other accommodation in Camborne. Camborne has rooms for a wide range of budgets as well as car hire and transport links.

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