Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 7 pm 25 Sep 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
14.4°C
0.9° 

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 (25 Sep):

  • Afternoon surf: Afternoon surf (25 Sep, local time) - 2.5ft (0.8m), 6s period with SW swell.
  • Evening surf: Evening surf (25 Sep, local time) - 6ft (1.8m), 6s period with SW swell.

The current surf forecast for Valnäs - Nord Koster at 11PM is: 1.7m 6s primary swell from a Southwest direction (forecast issued at 07:00pm September 25). The wind direction is predicted to be cross-shore.

Time (CEST) & DateWave HeightWave Period
Morning (25 Sep)--
Afternoon (25 Sep)2.5ft (0.8m)6s
Evening (25 Sep)6ft (1.8m)6s

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


Short Range Forecast

Light rain (total 2mm), mostly falling on Mon afternoon. Very mild (max 16°C on Sat afternoon, min 12°C on Sun night). Mainly strong winds.

Fri
25
Saturday
26
Sunday
27
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)
1.2
SW
6
1.8
SW
6
1.7
SW
6
1.4
SW
6
1.5
SW
6
1.5
SW
7
1.7
WSW
7
1.3
SW
7
1.3
SW
7
1.3
SW
6
1.5
SW
6
1.3
SW
6
1.6
SW
6
1.5
SW
6
1.1
SW
5
0.9
SW
5
0.8
SSW
4
0.1
W
6
0.1
W
6
Wave Graph
Metric surfscale
Energy kJ
113
255
212
147
170
204
259
149
138
141
172
132
154
136
73
0
0
1
1
Wind (km/h)
30
SW
40
SW
40
SW
30
SW
25
WNW
20
W
20
WNW
20
W
25
WSW
35
WSW
35
WSW
35
SW
40
WSW
35
SW
30
SW
25
SSW
25
S
25
SSE
20
SE
Wind State
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
off
High Tide
4:36PM0.28m
4:55AM0.24m
5:15PM0.27m
5:29AM0.23m
5:59PM0.26m
Low Tide
10:15PM0.02m
10:23AM0.01m
10:52PM0.02m
11:02AM0.00m
part cloud
clear
clear
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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—
—
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7:07
—
—
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—
—
—
—
7:09
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
—
—
—
—
—
—
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7:05
—
—
—
—
—
—
—
7:01
—
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 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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Temp °C
14
15
14
14
14
14
13
15
16
15
14
13
13
13
13
13
13
13
14
Feels °C
9
9
7
9
9
10
9
10
10
8
8
7
5
6
7
8
9
9
9
  • 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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