St Agnes Surf Break

Lat Long: 50.32° N 5.23° W

St Agnes Surf Forecast and Surf Report

Issued: 12 am 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's St Agnes sea temperature is
18.8° C
1.8° 

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


St Agnes surf forecast from 16 Aug 2026:

  • Most powerful swell: Thursday 20 Aug, 1AM (local time) - 7ft (2.2m), 8s period, WNW swell with 542 kJ wave energy.

Best Forecast Surf Conditions for St Agnes this week:

The most powerful waves expected at St Agnes in the next 16 days are 2.2m 8s and forecast to arrive on Thursday (Aug 20) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Saturday (Aug 22) at 4PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 1AM (Thu 20th Aug)7ft (2.2m) 8s

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


The Lowdown

Alright, let’s get this sorted. The next couple of weeks are looking pretty grim for any proper surf around St Agnes. There’s very little on the table for a good long while, and I’m not going to sugarcoat it – the ocean’s gonna be a bit of a mess.

We’re looking at a big gap in any real surf, with nothing worth paddling out for from Sunday the 16th all the way through to Thursday the 27th. That’s a solid stretch of small, wind-blown, and just plain ugly conditions. The swell is tiny, the wind’s mostly onshore or cross, and the energy in the water is weak. You’ll see readings like 42 and 41 on the 16th, and it hardly gets better. We’ve got some Westerly swells at 1ft to 3ft, but they’re short-period, 8 seconds or less a lot of the time, which just means messy, gutless waves. The wind will chop it up, and it’ll be a struggle for even a longboard.

Even when the swell bumps up a bit around the 18th and 19th, with a bit more energy (195, 204, 236), the wind is blowing cross-onshore at 15 to 18 mph, just ruining any chance of a clean face. It’s all poor surf conditions, trust me on that.

Things stay pretty average right through the next week. On Monday the 24th, we’ve got a strong breeze from the NE at 25 mph making it totally unpleasant, with some size but not an ounce of shape. That’s a write-off. There’s a small moment of hope on Thursday the 27th when the wind finally swings offshore, and we get a little 3ft westerly swell with some decent energy (91) showing up. That’s the first time in what feels like forever we get clean conditions, but it’s barely surfable – a real "if you’re desperate" kind of session.

But then things finally turn on Friday the 28th. Mark that one in the calendar. That’s the standout of the whole run. The swell jumps to a proper 8ft from the West with a period of 10 seconds, and the combined energy is a healthy 1048. That’s a real pulse of swell. The wind is light and cross-offshore from the SSW, and it’s looking clean. That’s the day to get wet. St Agnes is fairly consistent, so it should hold this swell, and the WSW direction is right in its wheelhouse. This is your window. It’s not going to be for the faint-hearted – 8ft is a solid step up, and it’ll be a bit too much for the groms, but for the rest of us, it’s game on.

The afternoon sees that drop back to 5ft, which is still really good, but the morning is definitely the best of it. After that, Saturday the 29th still has some waves, but the energy drops right back off, and it’s looking pretty average again. So, to be clear: the first 11 days are a total drought, and Friday the 28th is the one true gem. Don’t waste it.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 20°C on Mon morning, min 15°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Tue night. Very mild (max 18°C on Wed morning, min 15°C on Tue night). Mainly fresh winds.

Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
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)
0.4
WNW
7
0.5
W
7
0.3
W
7
0.5
W
9
1
W
8
1
W
7
1.4
WNW
6
1.2
WNW
6
1.3
WNW
6
1.3
WNW
6
1.6
WNW
6
2.2
WNW
8
1.6
WNW
7
1.4
WNW
9
1.1
W
9
0.8
W
9
0.7
W
8
0.3
SW
16
0.4
W
8
0.5
W
10
1.2
N
6
Wave Graph
Metric surfscale
Energy kJ
16
25
12
39
118
94
139
115
143
121
212
542
254
318
181
101
71
39
21
48
94
Wind (km/h)
20
N
15
NW
15
WNW
20
NW
20
WNW
25
W
25
WNW
20
NW
30
WNW
30
WNW
30
WNW
30
W
25
NW
25
WNW
20
NW
20
N
20
N
20
N
20
NNW
25
NNE
25
NE
Wind State
on
on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
on
cross-on
cross
High Tide
8:13AM6.37m
8:31PM6.49m
8:51AM6.09m
9:09PM6.08m
9:28AM5.72m
9:48PM5.59m
10:08AM5.28m
10:29PM5.07m
10:52AM4.83m
11:20PM4.59m
11:51AM4.44m
00:32AM4.24m
1:16PM4.23m
2:06AM4.17m
Low Tide
2:31PM0.25m
2:54AM0.38m
3:07PM0.57m
3:29AM0.78m
3:44PM0.99m
4:05AM1.23m
4:23PM1.44m
4:45AM1.69m
5:10PM1.88m
5:37AM2.10m
6:16PM2.23m
6:55AM2.37m
7:50PM2.36m
clear
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clear
part cloud
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rain showers
rain showers
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rain showers
part cloud
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rain showers
cloud
part cloud
clear
thunderstorm
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:11
6:13
6:13
6:16
6:16
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:38
8:37
8:35
8:32
8:30
8:29
8:27
 mm
2
2
1
1
4
1
Temp °C
17
17
19
20
19
19
19
18
17
18
18
17
17
18
17
16
16
15
16
17
13
Feels °C
14
15
18
18
17
17
16
15
14
14
12
12
12
14
14
12
12
11
12
13
8
  • 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 St Agnes Surf forecast

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

St Agnes is 13 km (8 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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