Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 1 pm 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
17.2°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 (05 Sep):

  • Morning surf: Morning surf (05 Sep, local time) - 2.5ft (0.7m), 7s period with SW swell.
  • Afternoon surf: Afternoon surf (05 Sep, local time) - 3.5ft (1.0m), 8s period with SW swell.
  • Evening surf: Evening surf (05 Sep, local time) - 2.5ft (0.8m), 8s period with SW swell.

The current surf forecast for Valnäs - Nord Koster at 7PM is: 0.9m 8s primary swell from a Southwest direction (forecast issued at 01:00pm September 05). The wind direction is predicted to be onshore.

Time (CEST) & DateWave HeightWave Period
Morning (05 Sep)2.5ft (0.7m)7s
Afternoon (05 Sep)3.5ft (1.0m)8s
Evening (05 Sep)2.5ft (0.8m)8s

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


Short Range Forecast

Moderate rain (total 11mm), heaviest on Sun night. Very mild (max 17°C on Sun night, min 14°C on Sat afternoon). Winds increasing (calm on Sun morning, strong winds from the WSW by Sun night).

Sat
5
Sunday
6
Monday
7
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)
0.8
SW
7
1
SW
8
1
SW
8
0.8
SW
8
0.8
SW
8
0.7
SW
7
0.7
SW
7
0.6
SW
7
0.6
SW
7
0.5
SW
7
0.7
SW
7
0.8
SW
7
1.8
SW
7
1.6
SW
6
1.3
SW
6
1.4
SW
5
1.3
SSW
5
1.4
SSW
6
1.3
SSW
6
1.3
SSW
6
1.5
SSW
6
Wave Graph
Metric surfscale
Energy kJ
77
123
129
90
79
52
47
37
29
22
50
63
316
182
0
0
0
0
0
0
0
Wind (km/h)
5
NNW
20
N
20
NNW
10
WNW
15
W
10
NW
5
NNE
5
ESE
5
SSW
15
SW
20
SSW
30
WSW
45
WSW
30
SW
35
SW
40
SW
35
SSW
35
S
35
S
35
SSW
35
SSW
Wind State
cross-on
cross-on
on
on
cross-on
on
glassy
glassy
cross-off
cross
cross-off
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
1:04PM0.26m
1:40AM0.31m
1:53PM0.29m
2:26AM0.33m
2:38PM0.31m
Low Tide
6:23PM0.05m
7:12AM0.08m
7:25PM0.03m
8:02AM0.05m
8:18PM0.01m
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
light rain
light rain
light rain
clear
cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:07
8:04
8:00
 mm
2
5
3
Temp °C
13
14
14
16
16
16
15
14
15
15
15
17
15
14
15
15
16
16
17
17
16
Feels °C
12
11
9
14
13
15
14
13
14
13
11
11
7
9
9
9
11
10
11
12
11
  • 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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