St Agnes Surf Break

Lat Long: 50.32° N 5.23° W

St Agnes Surf Forecast and Surf Report

Issued: 6 pm 25 Aug 2026 (local time)

Forecast update in  hr  min

Today's St Agnes sea temperature is
18.0°C
1.2° 

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 25 Aug 2026:

  • Best quality surf: Sunday 30 Aug, 7AM (local time) - 6.5ft (2.0m), 10s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Saturday 29 Aug, 7PM (local time) - 10ft (3.0m), 9s period, SW swell with 1,292 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 26 Aug, 1AM (local time) - 2ft (0.6m), 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 Wednesday (Aug 26) at 1AM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.5m and 8s. 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 3.0m 9s and forecast to arrive on Saturday (Aug 29) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Thursday (Aug 27) at 10AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Wed 26th Aug)2ft (0.6m) 9s
Best Surf 7AM (Sun 30th Aug)6.5ft (2.0m) 10s
Most Powerful 7PM (Sat 29th Aug)10ft (3.0m) 9s

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


The Lowdown

Alright, folks, Rusty here. Let’s break down what’s coming for St Agnes over the next couple of weeks. I’ll be honest, this is a rough one to look at. There’s swell on the horizon, but nearly every time it shows up, the wind is going to mess it up. We’re looking at a long, frustrating stretch before we might finally catch a break.

The outlook starts on Tuesday, August 25th. The surf is tiny, just 2ft from the WNW with a weak energy reading of 57. The wind is a cross-off from the E at 9 mph, but it’s not enough to save these poor conditions. The water temperature is 64°, which feels a touch warmer than normal for this time of year, but you won’t be thinking about that when you’re staring at a flat ocean.

Wednesday the 26th sees a tiny pulse of 2ft from the west, but the period is short at 8 seconds. The morning has a brief window with a light S offshore wind at 9 mph, making it clean, but it’s small and weak with energy at 63. The afternoon goes cross-off and the quality drops. Thursday the 27th is a write-off. The morning is messy with a 19 mph cross-off, and by the afternoon the swell jumps to 5ft from the SSW, but the wind is howling at 19 mph from the same direction, creating a total mess. The energy climbs to 368, but it’s unsurfable.

Friday the 28th and Saturday the 29th are both blown out. We’ve got some decent sized swell – 6ft to 10ft from the west and WSW – but the wind is a strong cross to cross-on, turning the ocean into a lumpy, choppy disaster. The combined energy hits 989 on Saturday morning and 1183 in the afternoon, a strong pulse, but it’s completely wasted. The wind is just too strong. This is one of those times where the setup looks more interesting for kite surfing than paddle surfing.

The first week of September is more of the same misery. Monday the 31st has 8ft from the west, but the wind is a fresh cross-onshore at 22 mph. Tuesday the 1st of September has a 8ft swell from the WSW with a cross-off wind, but it’s a strong breeze at 25 mph. The water is getting churned up. The pattern of strong swell and poor wind continues all the way through to the 6th, with energy values regularly in the high hundreds and even reaching the thousands, but the wind direction is always wrong.

Now, here’s the one glimmer of hope. The very end of the run, on Sunday, September 6th, finally shows a change. The morning has a solid 10ft swell from the west, a period of 10 seconds, and a moderate cross-off breeze from the WSW at 12 mph. The energy is 1669, which is strong. The conditions are clean. This is the standout, the one to circle on your calendar. It’s not perfect – the wind is cross-off, not glassy – but after two weeks of garbage, this is the best we’ve got. The afternoon turns crappy again with rain and a stronger wind, so the morning window on the 6th is your only shot.

Monday the 7th and Tuesday the 8th still have size, 7ft to 10ft, and even longer periods of 12 seconds, but the wind is a strong cross-on or cross-off, keeping it messy. The energy on the 8th is massive, over 3200, but it’s going to be a washing machine. This is big, powerful, long-period groundswell, and it will be breaking straight and fast at the beach. For the experts, it might offer some glory on the right bank, but the rest of us will be watching from the parking lot.

So, to wrap it up: the next two weeks are mostly a write-off for clean, fun surf at St Agnes. The wind is the enemy. The only true standout is the morning of Sunday, September 6th. Set your alarm, check the tide, and pray the wind forecast holds. Until then, keep your wax in the shade.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Wed night. Warm (max 22°C on Wed morning, min 16°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 17mm), heaviest on Sun morning. Very mild (max 19°C on Fri afternoon, min 15°C on Sun night). Winds decreasing (strong winds from the WSW on Sat afternoon, light winds from the S by Sat night).

Tue
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
1
0
0
0
0
1
0
0
0
0
0
1
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)
0.6
WNW
10
0.6
W
9
0.6
W
8
0.5
W
8
0.5
W
8
0.4
W
8
1.3
SSW
7
1.1
SW
8
1.3
SW
8
1.1
SW
7
1.1
WNW
6
2.2
SW
7
2.5
SW
8
2.5
WSW
10
1.8
WSW
9
1.2
W
9
1.1
SSW
6
0.9
W
8
1
W
10
1.1
WSW
10
Wave Graph
Metric surfscale
Energy kJ
75
59
49
31
28
18
173
147
181
122
101
515
958
1135
551
225
96
105
186
240
Wind (km/h)
25
ESE
15
SSE
15
SSE
25
SE
20
E
20
SW
20
SW
10
SSW
20
WSW
25
WSW
20
SW
30
SW
45
WSW
20
WSW
30
S
25
WSW
40
NW
25
NW
25
W
20
SW
Wind State
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross
cross
cross-off
cross
on
cross-on
cross-on
cross-off
High Tide
4:39PM5.13m
4:59AM5.18m
5:16PM5.57m
5:34AM5.56m
5:50PM5.96m
6:07AM5.90m
6:22PM6.27m
6:39AM6.16m
6:54PM6.48m
7:11AM6.32m
7:27PM6.57m
7:44AM6.37m
8:01PM6.51m
Low Tide
11:02PM1.39m
11:16AM1.23m
11:39PM0.98m
11:50AM0.85m
00:12AM0.64m
12:23PM0.55m
00:44AM0.38m
12:55PM0.34m
1:15AM0.22m
1:27PM0.24m
1:47AM0.20m
1:59PM0.27m
2:20AM0.30m
rain showers
part cloud
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
light rain
thunderstorm
part cloud
part cloud
mod rain
thunderstorm
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:26
6:28
6:28
6:31
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:21
8:19
8:16
8:15
8:13
8:09
8:07
 mm
2
4
5
1
8
3
Temp °C
20
17
22
21
18
19
20
17
19
19
18
19
18
17
19
18
16
17
17
17
Feels °C
17
16
20
18
16
16
17
16
16
15
14
16
11
12
15
14
11
13
13
13
  • 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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