St Agnes Surf Break

Lat Long: 50.32° N 5.23° W

St Agnes Surf Forecast and Surf Report

Issued: 12 pm 29 Aug 2026 (local time)

Forecast update in  hr  min

Today's St Agnes sea temperature is
18.2°C
1.5° 

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 29 Aug 2026:

  • Best quality surf: Tuesday 1 Sep, 1AM (local time) - 5ft (1.5m), 10s period, W swell with cross-offshore winds.
  • Most powerful swell: Monday 31 Aug, 1AM (local time) - 10ft (3.0m), 10s period, W swell with 1,867 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 1 Sep, 1AM (local time) - 5ft (1.5m), 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 Tuesday (Sep 01) at 1AM. The primary swell is predicted to be 1.5m and 10s period. 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 3.0m 10s and forecast to arrive on Monday (Aug 31) 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 1.3m 5s period and expected on Wednesday (Sep 02) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Tue 1st Sep)5ft (1.5m) 10s
Best Surf 1AM (Tue 1st Sep)5ft (1.5m) 10s
Most Powerful 1AM (Mon 31st Aug)10ft (3.0m) 10s

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


The Lowdown

Alright folks, Rusty here, checking in on the St Agnes stretch for the next couple of weeks. Let’s be straight up, the next ten days or so are a bit of a write-off, so I’d say hang loose and don’t bother waxing up just yet. We’re looking at a long, frustrating gap before things finally turn on.

The water is sitting at 65°, which is a touch warmer than normal for this time of year, so at least the wait won’t be freezing.

We kick off Saturday the 29th with a fresh swell from the SW pushing 8 ft, but a strong 19 mph cross-off wind is making a mess of it. The energy is moderate at 606, but it’s just poor surf conditions. It stays ugly right through the weekend and into the start of next week. Monday the 31st sees a 10 ft W swell, but with an 19 mph cross-on wind, it’s lumpy and blown-out – definitely for experts only if you’re brave, but honestly, it looks more interesting for kite surfing than paddle surfing.

This grim pattern holds. We get pulses of swell, like Wednesday the 2nd with a 7 ft WSW swell, but the wind stays fresh and cross-off, keeping the quality poor. The energy peaks hard on Monday the 4th with a 7 ft W groundswell at a very long 12 seconds, giving us 1170 in energy, but the cross-shore wind ruins it; it’s lumpy and choppy. The same story plays out for most of the first week of September – moderate energy, but the wind just won’t cooperate.

After a solid ten days of garbage, the light finally appears. The standout window is Monday the 7th of September. We get a 6 ft W swell with a long 11-second period, delivering 981 in energy. But the real story is the light 6 mph SE cross-off breeze and clean conditions. For the first time in this forecast, we’ve got clean waves. This is the first genuine, high-quality option on offer.

However, the real gem is shaping up for Friday the 11th of September. This is the one to circle. We’re looking at a powerful 10 ft W swell with a very long 14-second period, cranking out a massive 5574 in energy – that’s strong, serious groundswell. The wind is light and offshore from the S at 9 mph, making for gentle, clean conditions. This is prime for experienced surfers. The only caveat is that long-period, powerful swell can break a bit straight at beach breaks, so keep that in mind, but with offshore wind, St Agnes should hold up well. Saturday the 12th keeps the good vibes going with a clean 5 ft W swell.

So the story is simple: wait out the junk until the 7th for a taste of clean surf, but hold your breath for the 11th – that’s the one worth taking a day off for.

Rusty.

Short Range Forecast

Moderate rain (total 12mm), heaviest on Sat morning. Very mild (max 19°C on Sat morning, min 16°C on Sat night). Winds decreasing (strong winds from the W on Sat afternoon, light winds from the WSW by Mon night).

Days 4-6 Weather Summary

Light rain (total 5mm), mostly falling on Wed night. Very mild (max 19°C on Wed morning, min 16°C on Thu night). Winds increasing (light winds from the SW on Tue night, fresh winds from the SW by Wed morning).

Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
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
0
0
0
2
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)
2.3
SW
8
3
WSW
9
2.4
WSW
9
1.9
WSW
9
2.3
WSW
8
3
W
10
3
W
9
2.2
W
9
1.5
W
10
1.1
W
9
1
W
9
0.7
W
8
1.7
WSW
6
2.2
WSW
8
2.2
WSW
8
1.9
W
8
1.9
W
8
2.2
W
13
2
W
12
2.2
W
11
1.9
WNW
8
Wave Graph
Metric surfscale
Energy kJ
606
1695
841
524
672
1867
1374
845
408
189
151
63
227
584
618
470
476
1556
1117
1165
438
Wind (km/h)
30
SW
45
W
20
WSW
35
SW
35
SW
35
W
30
NW
20
WNW
10
SW
20
SW
20
WSW
20
SSW
30
SW
35
SW
30
SW
25
W
30
W
25
W
30
WSW
30
W
30
SW
Wind State
cross-off
cross-on
cross
cross-off
cross-off
cross-on
cross-on
cross-on
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
cross-on
cross
cross
cross-off
High Tide
6:54PM6.48m
7:11AM6.32m
7:27PM6.57m
7:44AM6.37m
8:01PM6.51m
8:19AM6.28m
8:38PM6.31m
8:58AM6.06m
9:19PM5.97m
9:41AM5.71m
10:06PM5.53m
10:33AM5.29m
11:07PM5.05m
Low Tide
12:55PM0.34m
1:15AM0.22m
1:27PM0.24m
1:47AM0.20m
1:59PM0.27m
2:20AM0.30m
2:34PM0.42m
2:55AM0.54m
3:12PM0.69m
3:35AM0.89m
3:57PM1.06m
4:24AM1.31m
4:55PM1.48m
thunderstorm
part cloud
clear
thunderstorm
thunderstorm
rain showers
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
light rain
part cloud
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:28
6:31
6:31
6:33
6:35
6:37
6:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:13
8:09
8:07
8:06
8:04
8:01
8:00
 mm
5
3
3
1
1
4
Temp °C
19
18
17
18
18
17
16
17
16
18
18
17
19
19
18
18
18
16
18
18
17
Feels °C
16
11
13
13
12
12
10
13
15
15
15
16
14
15
14
14
13
12
13
13
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