Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 7 pm 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
17.3° C
0.3° 

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 (12 Aug):

  • Morning surf: Morning surf (12 Aug, local time) - 1ft (0.3m), 5s period with SW swell.
  • Evening surf: Evening surf (12 Aug, local time) - 0.5ft (0.1m), 5s period with SW swell.

The current surf forecast for Valnäs - Nord Koster at 1AM is: 0.4m 4s primary swell from a Southwest direction and 0.1m 9s secondary swell from a West direction (forecast issued at 07:00pm August 11). The wind direction is predicted to be cross-offshore.

Time (CEST) & DateWave HeightWave Period
Morning (12 Aug)1ft (0.3m)5s
Afternoon (12 Aug)--
Evening (12 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 Thu night, min 14°C on Tue night). Mainly fresh winds.

Tue
11
Wednesday
12
Thursday
13
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SW
5
0.5
SW
3
0.4
SW
4
0.4
SW
4
0.1
W
8
0.3
SW
5
0.1
W
8
0.5
S
4
0.4
SSW
4
0.1
SW
5
0.1
SW
6
1.1
SW
6
1.4
SW
6
1.2
SW
6
1.1
SW
6
1.2
SW
5
1.2
SW
5
1.2
SW
6
1.1
SW
6
Wave Graph
Metric surfscale
Energy kJ
0
0
4
5
1
4
1
0
0
1
2
88
151
0
0
0
0
0
0
Wind (km/h)
15
WSW
20
SW
15
SW
15
SSE
25
SSE
25
SSE
20
S
20
S
15
SW
20
S
25
S
25
WSW
30
WSW
35
SW
30
SW
30
SSW
30
SSW
25
SSW
25
SSW
Wind State
cross
cross
cross
cross-off
off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
High Tide
4:26PM0.32m
4:56AM0.33m
5:14PM0.32m
5:43AM0.31m
6:05PM0.31m
Low Tide
10:07PM-0.01m
10:34AM-0.00m
10:56PM-0.02m
11:19AM-0.01m
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
cloud
part cloud
part cloud
clear
part cloud
cloud
cloud
cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:26
5:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:15
9:13
9:10
 mm
Temp °C
16
16
15
16
14
15
15
15
16
15
17
17
17
16
16
16
17
18
19
Feels °C
12
11
12
13
10
11
12
11
14
11
14
13
11
10
11
10
11
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 

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