St Agnes Surf Break

Lat Long: 50.32° N 5.23° W

St Agnes Surf Forecast and Surf Report

Issued: 6 am 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's St Agnes sea temperature is
18.0°C
1.6° 

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 6 Sep 2026:

  • Best quality surf: Friday 11 Sep, 1AM (local time) - 5ft (1.6m), 9s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Monday 7 Sep, 7AM (local time) - 7ft (2.2m), 14s period, W swell with 1,887 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 1PM (local time) - 2.5ft (0.7m), 9s period with W swell.

Best Forecast Surf Conditions for St Agnes this week:

The surf forecast for St Agnes over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 06) at 1PM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.2m and 13s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at St Agnes in the next 16 days are 2.2m 14s and forecast to arrive on Monday (Sep 07) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Saturday (Sep 12) at 1PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Sun 6th Sep)2.5ft (0.7m) 9s
Best Surf 1AM (Fri 11th Sep)5ft (1.6m) 9s
Most Powerful 7AM (Mon 7th Sep)7ft (2.2m) 14s

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


The Lowdown

Alright folks, Rusty here. Let’s have a good look at what’s coming up for St Agnes. I’ve got to be straight with you – the next week and a half is a bit of a mixed bag. We’ve got a solid pulse of swell rolling through, but the wind is going to be a real pain in the arse for most of it. The first decent chance to get wet without getting chopped to bits doesn’t come around until later on.

We start off this Sunday, 6th September, with a weak 3ft W swell at 9 seconds. The wind is howling out of the SSE at 16 mph, which is offshore for St Agnes, so the waves will be clean, but the energy is low. The combined energy is a paltry 120 (weak). It’s surfable, but you’ll be working hard for small, crumbly ones. Honestly, not much to write home about.

Monday 7th sees a big jump in size – a 8ft W swell at 13 seconds rolls in. That’s a long-period groundswell carrying a lot of punch, with a combined energy of 1780 (strong). The problem? The wind is howling out of the WNW at 12 mph, putting a nasty cross-onshore chop on it. That’s a choppy, blown-out mess. Monday afternoon is a little smaller at 7ft, but the wind swings to WSW at 16 mph, making it a cross-shore. It’s heavy, messy, and not clean. This one’s for the experts only, if anyone bothers.

Tuesday 8th through Friday 11th is a real write-off. We’ve got plenty of swell – ranging from 4ft to 7ft from the W and WNW – but the wind is relentless. It’s either a strong cross-onshore from the NW or a direct onshore, keeping everything rough and lumpy. The energy stays moderate to strong (486 to 590), but without clean conditions, it’s unsurfable. The water temperature is about average for this time of year, so no need for a thick wetsuit, but you’ll be wishing you had a kite.

Saturday 12th September is a glimmer of hope. The swell drops to 3ft in the morning, but the wind goes light out of the SW at 9 mph, making it cross-offshore and clean. The energy is only 107 (weak), but it’s a window of clean, small waves. By the afternoon, the swell builds to 5ft from the WSW, and the wind picks up to 16 mph from the SW, staying cross-offshore. It’s a bit bumpy, but the combined energy is 293 (moderate). It’s ordinary, but it’s the best we’ve seen all week.

The real standout, and the one I’m circling on the calendar, is Wednesday 16th September. The morning brings a 5ft W swell at 10 seconds. The wind is dead calm – glassy – and the sky is clear. The combined energy is 509 (moderate), and the forecast says “expect good surf conditions.” This is the best window of the entire outlook. The water is about average temp for the season, so it’ll be comfortable. The crowd factor at St Agnes is “often”, so get there early if you can. The swell direction is from the W, which is the optimum direction for this spot. It’s clean, it’s got push, and it’s going to be good.

After that, the rest of the forecast fades out. Thursday 17th and Friday 18th have smaller, weaker swell (4ft to 4ft) with light winds, but nothing special. The last few days from Saturday 19th through Monday 21st are a write-off again – small, weak, and onshore.

So, bottom line: if you’re patient, hold out for Wednesday 16th September. That’s your day. The glassy conditions and that solid W swell will make St Agnes proper. The week before that is mostly blown out, and the week after fizzles out. The 16th is the one.

Rusty.

Short Range Forecast

Light rain (total 5mm), mostly falling on Mon night. Warm (max 22°C on Sun morning, min 15°C on Mon night). Winds increasing (light winds from the SW on Sun night, fresh winds from the WSW by Mon night).

Days 4-6 Weather Summary

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

Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
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
1
0
0
0
0
0
0
0
0
0
2
2
1
1
0
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
W
9
0.7
W
9
0.9
W
16
2.2
W
13
2
W
12
2.4
W
11
2.2
W
9
2
W
9
2.4
WNW
9
1.7
WNW
7
1.6
W
8
1.1
W
9
1.4
WSW
6
1.9
WSW
8
1.6
WSW
9
1.4
WSW
9
1
W
8
0.9
WSW
8
0.8
W
8
2.4
W
8
2
W
10
Wave Graph
Metric surfscale
Energy kJ
104
74
417
1632
1209
1329
810
635
878
294
341
185
144
385
461
287
140
99
74
688
755
Wind (km/h)
25
SSE
20
SSW
15
WSW
20
WNW
20
WSW
35
WSW
25
WNW
30
WNW
30
NW
25
WNW
20
WNW
20
WSW
25
SSW
20
W
15
SW
15
SSW
5
SE
10
SE
25
SSW
30
WSW
15
W
Wind State
off
cross-off
cross
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross
cross-off
cross-off
off
off
cross-off
cross
cross
High Tide
1:16PM4.78m
2:07AM4.73m
2:47PM5.05m
3:27AM5.10m
3:55PM5.55m
4:25AM5.59m
4:47PM6.06m
5:12AM6.03m
5:31PM6.48m
5:53AM6.36m
6:11PM6.74m
6:31AM6.55m
6:48PM6.80m
Low Tide
8:02PM1.80m
8:43AM1.76m
9:28PM1.42m
9:55AM1.32m
10:29PM0.91m
10:49AM0.82m
11:18PM0.45m
11:34AM0.41m
11:59PM0.11m
12:14PM0.13m
00:37AM-0.05m
12:50PM0.01m
1:11AM-0.04m
clear
part cloud
part cloud
part cloud
cloud
rain showers
rain showers
clear
part cloud
part cloud
part cloud
cloud
rain showers
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:41
6:43
6:45
6:46
6:48
6:48
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:54
7:52
7:51
7:49
7:46
7:44
7:42
 mm
4
1
2
Temp °C
22
20
18
17
17
16
16
16
16
16
16
16
18
18
17
17
19
18
19
19
16
Feels °C
18
17
18
13
14
12
10
10
9
11
11
14
15
16
14
16
19
19
16
15
14
  • 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 St Agnes:

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 St Agnes 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 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.

Nearest locationNearest