St Agnes Surf Break

Lat Long: 50.32° N 5.23° W

St Agnes Surf Forecast and Surf Report

Issued: 6 pm 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's St Agnes sea temperature is
17.9°C
1.3° 

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 1 Sep 2026:

  • Best quality surf: Monday 7 Sep, 10PM (local time) - 8ft (2.4m), 11s period, W swell with cross-offshore winds.
  • Most powerful swell: Monday 7 Sep, 4AM (local time) - 7ft (2.1m), 14s period, W swell with 1,797 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 1 Sep, 10PM (local time) - 3ft (0.9m), 8s 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 10PM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.1m and 16s. 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 2.1m 14s and forecast to arrive on Monday (Sep 07) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Wednesday (Sep 02) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Tue 1st Sep)3ft (0.9m) 8s
Best Surf10PM (Mon 7th Sep)8ft (2.4m) 11s
Most Powerful 4AM (Mon 7th Sep)7ft (2.1m) 14s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on the cards for St Agnes over the next couple of weeks.

Right off the bat, I’ve got to be straight with you – the first few days are a write-off. We’re looking at Tuesday afternoon through to Friday, with poor surf conditions and messy winds. There’s some size in the water, with swell around 3ft to 6ft, but it’s coming with a cross-off or cross-shore wind that’s just wrecking the shape. The wave energy is moderate, hitting between 158 and 487 on the scale, but it’s not doing us any favours with the wind mix. Not worth paddling out for.

Now, Saturday the 5th is where things start to look interesting. Saturday morning, the stars align. We’ve got a clean 4ft swell from the WNW with a long period of 11 seconds – that’s groundswell there, folks. The wind is glassy, dead calm, so the surface will be like a mirror. The combined energy is a solid 411, which is moderate, but with that period and no wind, this is a real window of opportunity. The water temperature is 64°, which is a touch warmer than normal for this time of year, so you won’t need a thick wetsuit. The break is fairly exposed to the swell, and the optimum direction is WSW, so the WNW swell is a bit off-angle, but it’ll still wrap in nicely. Keep an eye on the crowds, though – St Agnes can get busy often, so get in early.

Sunday morning the 6th is a bit of a letdown after that. We’ve got offshore winds from the SE, which is clean, but the swell drops to 2ft with a weak energy of 97. It’s surfable, but very ordinary. The period is still a decent 9 seconds, so there’s a little shape, but you’ll be working for small waves.

The middle of the following week brings a real change. Monday the 7th morning sees a solid 7ft swell from the W, with a very long period of 13 seconds – that’s proper groundswell energy. The combined energy is a massive 1607, so there’s plenty of power. But the wind is cross-on from the W, making it choppy. This is big, beefy stuff. At 7ft, it’s pushing into the expert-only zone, and with that long period, it’s going to be breaking straight at a beach break like St Agnes, so it’s really one for the experienced crew on a bigger board, or maybe more interesting for the kite surfers if the wind picks up. The afternoon is similar, with 7ft and a cross-shore wind.

We get a bit of a break mid-week, with poor conditions and strong winds, but then we’re looking at Friday the 11th. Friday morning is a highlight. We’ve got an offshore wind from the SE, a clean 5ft swell from the WSW, and a period of 8 seconds. The energy is 324, which is moderate, but the offshore wind will tidy it up nicely. The swell direction matches the optimum perfectly, so the waves should have good shape. It’s a solid intermediate level day.

The following weekend, Saturday the 12th and Sunday the 13th, are a bit of a dud with small, weak swell and strong cross-shore winds. Not much to get excited about.

Then we hit the final stretch. Monday the 14th brings a 6ft swell from the WSW with a period of 9 seconds, but the wind is cross-off from the ESE, keeping it clean. The energy is 542, so there’s some push. It’s still a bit big for beginners, but for the intermediates, it’s a goer if the wind holds.

The real standout for the second week, though, is Wednesday the 16th morning. We’ve got a 6ft swell from the W, with a period of 11 seconds. The wind is light from the SW, giving us a clean cross-off breeze. The energy is 845, so it’s got some grunt. The conditions are looking very good, with clean faces. This is a promising one, but it’s a long way out, so we’ll have to see how it shapes up.

So, to sum it up: the best of the best is Saturday the 5th morning – glassy, 4ft, long period, and clean. For a bigger, more powerful option, keep an eye on Wednesday the 16th morning. The rest is a mixed bag of wind and chop.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Thu night. Warm (max 20°C on Thu morning, min 16°C on Fri morning). Winds increasing (light winds from the SW on Tue night, fresh winds from the SW by Wed morning).

Days 5-7 Weather Summary

Mostly dry. Warm (max 21°C on Sun morning, min 15°C on Fri night). Wind will be generally light.

Tue
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
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
0
0
1
0
0
0
0
0
0
2
1
1
1
1
3
2
1
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
W
9
0.9
W
8
1.6
WSW
6
1.9
WSW
8
1.7
WSW
8
1.6
WSW
8
1.6
WSW
8
1.8
WSW
8
1.9
W
8
1.5
W
9
1.5
W
11
1.3
WNW
11
1.1
W
10
0.9
W
10
0.7
W
9
0.6
W
9
1.3
W
15
2.2
W
13
2.1
W
12
2.4
W
10
Wave Graph
Metric surfscale
Energy kJ
146
105
202
411
310
300
300
394
454
328
516
392
270
154
81
55
786
1604
1227
1222
Wind (km/h)
20
SW
15
SSW
30
SSW
30
WSW
20
SW
20
WSW
30
WSW
30
SW
15
NW
20
WNW
15
WNW
0
SSE
5
WNW
10
SE
25
SE
20
SE
10
SW
15
W
15
W
25
SW
Wind State
cross-off
cross-off
cross-off
cross
cross-off
cross
cross
cross-off
cross-on
cross-on
cross-on
glassy
cross-on
cross-off
off
off
cross-off
cross-on
cross
cross-off
High Tide
8:38PM6.31m
8:58AM6.06m
9:19PM5.97m
9:41AM5.71m
10:06PM5.53m
10:33AM5.29m
11:07PM5.05m
11:43AM4.91m
00:30AM4.71m
1:16PM4.78m
2:07AM4.73m
2:47PM5.05m
3:27AM5.10m
Low Tide
2:55AM0.54m
3:12PM0.69m
3:35AM0.89m
3:57PM1.06m
4:24AM1.31m
4:55PM1.48m
5:30AM1.73m
6:18PM1.81m
7:05AM1.94m
8:02PM1.80m
8:43AM1.76m
9:28PM1.42m
part cloud
cloud
part cloud
clear
part cloud
cloud
part cloud
rain showers
cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:35
6:37
6:39
6:39
6:41
6:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:06
8:04
8:01
8:00
7:58
7:54
7:52
 mm
1
2
Temp °C
18
17
19
19
19
20
20
19
16
16
16
17
17
15
21
20
17
18
17
17
Feels °C
15
16
15
15
18
18
17
17
15
13
14
16
16
14
17
16
15
17
15
13
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  • 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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