St Agnes Surf Break

Lat Long: 50.32° N 5.23° W

St Agnes 48 hour detailed Surf Forecast

Issued: 6 am 18 Sep 2026 (local time)

Forecast update in  hr  min

Today's St Agnes sea temperature is
17.6°C
1.8° 

St Agnes surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at St Agnes today (18 Sep):

  • Morning surf: Morning surf (18 Sep, local time) - 7ft (2.1m), 13s period with WNW swell.
  • Afternoon surf: Afternoon surf (18 Sep, local time) - 3.5ft (1.1m), 12s period with WNW swell.
  • Evening surf: Evening surf (18 Sep, local time) - 7ft (2.1m), 8s period with W swell.

The current surf forecast for St Agnes at 11AM is: 2.2m 13s primary swell from a West direction and 1.9m 13s secondary swell from a West-northwest direction, 0.1m 12s secondary swell from a Southwest direction (forecast issued at 06:00am September 18). The wind direction is predicted to be cross-shore.

Time (BST) & DateWave HeightWave Period
Morning (18 Sep)7ft (2.1m)13s
Afternoon (18 Sep)3.5ft (1.1m)12s
Evening (18 Sep)7ft (2.1m)8s

Table - waves today at St Agnes. (Swell directed towards the surf break)


Short Range Forecast

Some drizzle, heaviest during Sat night. Very mild (max 18°C on Sat afternoon, min 15°C on Sun morning). Winds decreasing (fresh winds from the WSW on Sat morning, calm by Sun night).

Friday
18
Saturday
19
Sunday
20
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
0
1
0
0
0
1
0
0
1
1
0
0
1
1
2
2
1
1
0
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
WNW
13
2.1
WNW
13
2.2
W
13
1.9
W
13
1.1
WNW
12
1.9
W
7
2.1
W
8
2.1
W
8
2.1
W
8
2.1
W
8
2
W
8
2.3
W
11
2.2
W
11
2.1
W
11
2
W
11
2.1
W
11
1.7
W
11
1.6
W
11
1.6
W
11
1.5
W
11
1.4
W
11
1.3
W
11
1.2
W
11
Wave Graph
Metric surfscale
Energy kJ
1581
1430
1682
1191
386
378
541
569
583
572
535
1165
1107
1009
915
1011
663
606
617
553
483
418
358
Wind (km/h)
25
WNW
20
W
25
WSW
30
WSW
30
WSW
30
SW
30
SW
30
WSW
30
WSW
30
SW
35
WSW
25
WSW
25
WSW
20
WSW
15
W
10
W
5
W
10
NW
10
NNW
10
NW
10
NW
5
NW
5
WNW
Wind State
cross-on
cross-on
cross
cross
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross
cross
cross
cross
cross-on
cross-on
on
on
cross-on
cross-on
on
glassy
High Tide
10:05AM4.86m
10:31PM4.52m
11:00AM4.42m
11:41PM4.13m
12:28PM4.15m
Low Tide
4:23PM1.89m
4:45AM2.16m
5:28PM2.29m
6:06AM2.47m
7:12PM2.45m
cloud
cloud
cloud
cloud
cloud
cloud
cloud
clear
part cloud
part cloud
cloud
cloud
part cloud
cloud
part cloud
part cloud
cloud
light rain
cloud
part cloud
cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:00
7:01
7:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:29
7:27
7:23
 mm
1
Temp °C
15
15
16
16
16
16
17
17
16
16
17
17
18
17
17
17
16
16
15
16
17
16
16
Feels °C
11
12
11
11
11
11
13
14
12
12
12
14
15
16
16
16
16
16
15
15
16
16
16
  • 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 

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.


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