St Agnes Surf Break

Lat Long: 50.32° N 5.23° W

St Agnes Surf Forecast and Surf Report

Issued: 6 am 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's St Agnes sea temperature is
17.9°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 12 Sep 2026:

  • Best quality surf: Monday 14 Sep, 1AM (local time) - 4ft (1.2m), 10s period, W swell with cross-offshore winds.
  • Most powerful swell: Friday 18 Sep, 4AM (local time) - 5ft (1.6m), 12s period, WNW swell with 743 kJ wave energy.
  • Next surfable swell (1★+): Monday 14 Sep, 1AM (local time) - 4ft (1.2m), 10s 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 Monday (Sep 14) at 1AM. The primary swell is predicted to be 1.2m and 10s 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 St Agnes in the next 16 days are 1.6m 12s and forecast to arrive on Friday (Sep 18) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Wednesday (Sep 16) at 10PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Mon 14th Sep)4ft (1.2m) 10s
Best Surf 1AM (Mon 14th Sep)4ft (1.2m) 10s
Most Powerful 4AM (Fri 18th Sep)5ft (1.6m) 12s

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


The Lowdown

Alright, Rusty here. Let’s have a look at what we’ve got coming up for St Agnes.

Honestly mate, the next couple of weeks are a bit of a mixed bag, and we've got a long dry spell to kick things off. Not a lot to get excited about for a while.

The first few days are a write-off, with poor surf conditions and onshore or cross-off winds mushing up the swell. The water is sitting at about 64°, which is a touch warmer than normal for this time of year, but that’s the only thing working in our favour initially.

There’s a bit of a bump showing for the morning of Friday the 18th of September. The swell is from the WNW with a 5 ft and a long period of 13 seconds, offering some moderate wave energy (672). But it’s a cross-on wind, and the conditions are described as marginal. It might be a session for those who are keen to get wet, but it’s not going to be anything special. Later that day the wind swings cross-shore and the waves drop off.

The real standout, the one that might be worth circling on the calendar, is the morning of Sunday the 20th of September. We’re looking at a 8 ft swell from the W, with an 8-second period. A big increase in size means the energy is ramping up (820), but caution here – this is likely too big for beginners, and with the wind coming in at 19 mph from the WSW cross-shore, the surface is going to be lumpy and messy. It’s not a clean, glassy day. The surf is still described as poor conditions, so the wind is really going to chop things up. If you're an experienced surfer and you don't mind a bumpy, powerful wave, you might find some fun, but don't expect perfection.

After that, we see a drop in energy and size, with some smaller, clean days around the 25th and 26th of September, but only small, ordinary waves on offer. The best of the second week is the morning of Sunday the 27th of September, where we’ve got a 6 ft swell from the WNW with a cross-off wind and clean conditions. The period is short at 7 seconds, but the energy is moderate (370). It’s marginal, but if you’re patient, it could offer a few fun ones.

So, to sum it up: St Agnes is not delivering any world-class days in this window. If you’re a beginner, stay away on the 20th when it gets big and messy. For everyone else, the morning of the 27th is your best bet for some clean, punchy waves, even if they aren’t huge. Heads up for crowds at St Agnes – it gets busy often.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Mon night. Warm (max 20°C on Mon morning, min 17°C on Sat morning). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Wed night. Very mild (max 17°C on Tue morning, min 14°C on Tue night). Mainly fresh winds.

Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
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
2
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
1
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)
1.3
W
8
1.8
W
8
1.9
W
10
1.7
W
10
1.5
W
10
1.2
W
10
1.1
W
9
1.1
W
8
1
W
8
1.6
WNW
8
1.8
WNW
8
1.6
W
8
1.6
W
10
1.6
WNW
10
1.5
W
10
1.7
WNW
7
1.6
WNW
7
1.6
WNW
10
1.5
WNW
13
1.3
WNW
12
0.9
WNW
12
Wave Graph
Metric surfscale
Energy kJ
239
418
724
578
432
262
189
169
130
350
424
333
499
588
468
277
292
544
660
519
203
Wind (km/h)
30
SW
30
SW
25
SW
20
WSW
15
W
15
SW
20
SW
20
SW
15
SSW
25
NW
30
NW
30
NNW
25
NNW
25
NW
25
W
35
WNW
30
WNW
25
WNW
15
W
20
WSW
20
SW
Wind State
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
High Tide
6:48PM6.80m
7:07AM6.57m
7:24PM6.68m
7:41AM6.44m
7:59PM6.41m
8:15AM6.17m
8:33PM6.00m
8:49AM5.79m
9:08PM5.53m
9:25AM5.34m
9:45PM5.02m
10:05AM4.86m
10:31PM4.52m
Low Tide
12:50PM0.01m
1:11AM-0.04m
1:25PM0.06m
1:44AM0.13m
1:58PM0.25m
2:16AM0.43m
2:30PM0.57m
2:47AM0.82m
3:03PM0.97m
3:19AM1.26m
3:39PM1.43m
3:56AM1.72m
4:23PM1.89m
part cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
clear
rain showers
clear
clear
clear
part cloud
cloud
rain showers
rain showers
part cloud
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:52
6:54
6:54
6:56
6:58
7:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:42
7:39
7:37
7:36
7:32
7:30
7:29
 mm
1
1
1
Temp °C
18
19
18
18
19
19
20
20
18
17
16
16
14
14
16
16
16
15
16
17
16
Feels °C
13
15
16
17
19
19
18
18
17
13
11
13
9
9
12
10
11
10
14
13
12
  • 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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