Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 7 pm 02 Sep 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
17.6°C
1.6° 

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 (03 Sep):

  • Morning surf: Morning surf (03 Sep, local time) - 4.5ft (1.4m), 6s period with SW swell.
  • Afternoon surf: Afternoon surf (03 Sep, local time) - 2ft (0.6m), 6s period with SW swell.
  • Evening surf: Evening surf (03 Sep, local time) - 0.5ft (0.1m), 6s period with SW swell.

The current surf forecast for Valnäs - Nord Koster at 2AM is: 1.5m 7s primary swell from a Southwest direction (forecast issued at 07:00pm September 02). The wind direction is predicted to be cross-onshore.

Time (CEST) & DateWave HeightWave Period
Morning (03 Sep)4.5ft (1.4m)6s
Afternoon (03 Sep)2ft (0.6m)6s
Evening (03 Sep)0.5ft (0.1m)6s

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


Short Range Forecast

Moderate rain (total 12mm), heaviest on Fri morning. Very mild (max 18°C on Wed night, min 12°C on Sat morning). Winds decreasing (strong winds from the WSW on Wed night, calm by Thu night).

Wed
2
Thursday
3
Friday
4
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
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
SW
6
1.6
SW
6
1.7
SW
6
1.5
SW
7
1.3
SW
7
1.4
SW
6
1.1
SW
6
0.6
SW
6
0.5
SW
5
0.1
SW
6
0.1
SW
6
0.2
SSW
5
0.1
SW
5
0.4
SW
8
0.6
SW
7
0.7
SW
7
0.8
SW
7
0.8
SW
6
1.4
SW
6
Wave Graph
Metric surfscale
Energy kJ
0
220
233
192
159
162
89
25
0
1
1
0
1
20
34
52
60
51
162
Wind (km/h)
45
SW
40
WSW
45
WSW
40
W
30
W
20
WSW
15
WSW
15
SSW
15
SW
10
SW
10
SW
10
S
5
SSE
15
NE
10
NE
10
N
5
N
5
ENE
10
E
Wind State
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-off
cross
cross
cross
cross-off
glassy
cross
cross
cross-on
glassy
glassy
cross-off
High Tide
10:55PM0.25m
11:13AM0.21m
11:57PM0.27m
12:12PM0.24m
Low Tide
2:47PM0.05m
3:38AM0.10m
3:56PM0.06m
4:54AM0.11m
5:11PM0.06m
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
cloud
part cloud
cloud
light rain
mod rain
part cloud
cloud
part cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:15
8:12
8:09
 mm
4
7
Temp °C
17
18
14
13
14
13
14
14
14
15
15
15
14
14
13
13
13
14
14
Feels °C
9
10
4
4
7
8
10
10
11
14
14
14
14
11
11
11
12
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
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