Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 1 pm 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
17.8°C
0.8° 

Valnäs - Nord Koster surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Valnäs - Nord Koster today (23 Aug):

  • Morning surf: Morning surf (23 Aug, local time) - 2ft (0.6m), 3s period with N swell.
  • Afternoon surf: Afternoon surf (23 Aug, local time) - 1ft (0.3m), 3s period with NNW swell.
  • Evening surf: Evening surf (23 Aug, local time) - 0.5ft (0.1m), 5s period with SW swell.

The current surf forecast for Valnäs - Nord Koster at 4PM is: 0.3m 3s primary swell from a North-northwest direction and 0.1m 6s secondary swell from a Southwest direction (forecast issued at 01:00pm August 23). The wind direction is predicted to be onshore.

Time (CEST) & DateWave HeightWave Period
Morning (23 Aug)2ft (0.6m)3s
Afternoon (23 Aug)1ft (0.3m)3s
Evening (23 Aug)0.5ft (0.1m)5s

Table - waves today at Valnäs - Nord Koster. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Warm (max 21°C on Sun night, min 13°C on Sun night). Wind will be generally light.

Sun
23
Monday
24
Tuesday
25
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
N
3
0.4
NNW
3
0.1
SW
6
0.1
SW
5
0.1
SW
5
0.3
NNE
2
0.4
NNE
3
0.3
NNE
3
0.1
SW
4
0.1
SW
4
0.1
SW
4
0.1
SW
4
0.1
SW
4
Wave Graph
Metric surfscale
Energy kJ
6
3
1
1
1
1
2
1
1
1
1
1
1
0
0
0
0
0
0
0
0
Wind (km/h)
25
N
20
NNW
20
NW
15
NW
20
NW
20
NNE
25
NE
20
NNE
15
N
20
WNW
20
W
15
W
10
NW
5
NE
10
E
10
ENE
5
NNW
15
NW
20
WNW
5
W
0
SE
Wind State
cross-on
on
on
on
on
cross-on
cross
cross
cross-on
on
cross-on
cross-on
on
cross
cross-off
cross-off
cross-on
on
on
cross-on
glassy
High Tide
2:47PM0.29m
3:16AM0.33m
3:24PM0.29m
3:51AM0.32m
4:00PM0.29m
Low Tide
8:54AM0.10m
8:39PM0.07m
9:16AM0.10m
9:10PM0.06m
9:37AM0.08m
9:41PM0.05m
part cloud
cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:44
8:40
8:37
 mm
Temp °C
16
18
20
21
19
16
13
13
16
17
19
19
18
18
18
17
18
19
21
21
21
Feels °C
11
13
15
18
14
11
7
8
12
12
14
15
15
16
16
14
16
15
17
19
20
  • 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 

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