Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 7 pm 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
17.2° C
0.4° 

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 (10 Aug):

  • Afternoon surf: Afternoon surf (10 Aug, local time) - 5ft (1.6m), 6s period with SW swell.
  • Evening surf: Evening surf (10 Aug, local time) - 6ft (1.8m), 7s period with WSW swell.

The current surf forecast for Valnäs - Nord Koster at 11PM is: 1.8m 7s primary swell from a West-southwest direction and 1.3m 7s secondary swell from a Southwest direction (forecast issued at 07:00pm August 10). The wind direction is predicted to be onshore.

Time (CEST) & DateWave HeightWave Period
Morning (10 Aug)--
Afternoon (10 Aug)5ft (1.6m)6s
Evening (10 Aug)6ft (1.8m)7s

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


Short Range Forecast

Mostly dry. Very mild (max 19°C on Mon night, min 14°C on Mon night). Mainly fresh winds.

Mon
10
Tuesday
11
Wednesday
12
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)
1.5
SW
6
1.9
WSW
7
1.8
WSW
7
1.1
SW
7
0.8
SW
7
0.7
SW
6
0.4
SW
6
0.4
SW
6
0.4
SW
5
0.3
SW
5
0.4
SW
4
0.1
W
9
0.1
W
9
0.2
WSW
6
0.4
SSW
4
0.4
SSW
5
0.1
W
7
0.1
W
7
0.1
SW
7
Wave Graph
Metric surfscale
Energy kJ
167
313
290
97
61
41
13
12
0
4
5
2
1
3
0
0
1
1
2
Wind (km/h)
40
WSW
30
W
35
NW
20
N
15
NNE
10
NNW
10
NW
10
SW
20
SSW
20
SSW
15
S
20
SSE
20
SE
20
SSE
15
S
15
SSW
10
SSW
15
SSW
25
S
Wind State
cross
cross-on
on
cross-on
cross
on
on
cross
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
3:39PM0.31m
4:10AM0.34m
4:26PM0.32m
4:56AM0.33m
5:14PM0.32m
Low Tide
9:17PM-0.00m
9:49AM0.02m
10:07PM-0.01m
10:34AM-0.00m
10:56PM-0.02m
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:24
5:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:17
9:15
9:13
 mm
Temp °C
18
19
17
16
14
14
14
16
17
17
16
15
14
14
15
15
15
16
16
Feels °C
10
13
10
11
10
11
11
13
13
14
13
12
10
11
13
13
13
13
12
  • 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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