Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 1 pm 30 Aug 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
17.8°C
1.5° 

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 (30 Aug):

  • Afternoon surf: Afternoon surf (30 Aug, local time) - 3ft (0.9m), 6s period with SW swell.
  • Evening surf: Evening surf (30 Aug, local time) - 2ft (0.6m), 6s period with SW swell.

The current surf forecast for Valnäs - Nord Koster at 9PM is: 0.6m 6s primary swell from a Southwest direction (forecast issued at 01:00pm August 30). An open ocean swell of 0.8m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (CEST) & DateWave HeightWave Period
Morning (30 Aug)--
Afternoon (30 Aug)3ft (0.9m)6s
Evening (30 Aug)2ft (0.6m)6s

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


Short Range Forecast

Mostly dry. Very mild (max 17°C on Sun afternoon, min 15°C on Tue morning). Winds increasing (calm on Tue morning, near gales from the WSW by Tue night).

Sun
30
Monday
31
Tuesday
1
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)
1.3
SSW
6
0.9
SW
6
0.9
SSW
5
0.6
SW
6
0.3
SW
6
1.6
SW
7
1.7
SW
7
1.6
SW
7
1.3
SW
6
0.9
SSW
6
0.8
SSW
6
0.6
SSW
5
0.1
SW
6
0.3
SW
4
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.2
SSW
6
0.3
SW
6
0.6
SSW
6
1.9
SW
7
Wave Graph
Metric surfscale
Energy kJ
0
64
0
32
6
213
269
219
141
0
0
0
2
3
1
1
2
0
6
0
315
Wind (km/h)
30
SSW
20
SSW
20
SSW
20
SSW
20
S
25
SSW
30
SW
25
SW
25
SW
25
SW
20
SSW
15
SSW
10
SSW
5
S
10
ESE
10
ESE
5
S
10
SSW
15
SW
25
SSW
50
WSW
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
off
cross-off
glassy
cross-off
cross
cross-off
cross-on
High Tide
7:31PM0.24m
7:45AM0.20m
8:37PM0.23m
8:54AM0.19m
9:48PM0.23m
Low Tide
12:14PM0.02m
00:46AM0.05m
12:58PM0.03m
1:35AM0.06m
1:48PM0.04m
rain showers
part cloud
cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
cloud
cloud
cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:23
8:21
8:17
 mm
1
Temp °C
17
17
17
17
17
17
16
16
16
16
16
17
17
16
16
15
16
17
17
17
16
Feels °C
13
14
15
14
14
14
11
12
12
12
12
15
17
16
15
14
16
16
15
13
7
  • 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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