Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 1 am 25 Sep 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
14.5°C
0.8° 

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):

  • Morning surf: Morning surf (25 Sep, local time) - 0.5ft (0.1m), 6s period with SW swell.
  • 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 6AM is: 0.1m 6s primary swell from a Southwest direction (forecast issued at 01:00am September 25). The wind direction is predicted to be cross-shore.

Time (CEST) & DateWave HeightWave Period
Morning (25 Sep)0.5ft (0.1m)6s
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

Mostly dry. Very mild (max 16°C on Sat night, min 12°C on Sat morning). Winds decreasing (fresh winds from the SW on Fri night, light winds from the WNW by Sat morning).

Friday
25
Saturday
26
Sunday
27
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
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
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
W
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.6
SW
7
1.2
SW
6
1.8
SW
6
1.8
SW
6
1.5
SW
6
1.1
SW
6
0.9
SW
6
0.9
SW
7
1.1
SW
6
1
SW
6
1.3
SW
6
1.4
SW
6
1.3
SW
6
1.4
SW
6
1.3
SW
6
1.2
SW
5
0.9
SW
5
0.8
SSW
4
0.6
SW
4
0.4
SW
4
Wave Graph
Metric surfscale
Energy kJ
1
1
1
1
27
113
255
236
164
85
68
73
101
72
118
146
0
123
107
83
0
0
16
7
Wind (km/h)
5
NNW
5
SW
15
SSW
20
SSW
25
SW
30
SW
40
SW
35
SW
20
W
15
NNW
15
NW
10
WNW
15
WSW
15
SSW
35
WSW
35
WSW
35
WSW
35
WSW
35
SW
30
SW
30
SSW
25
S
25
S
25
SSE
Wind State
glassy
glassy
cross-off
cross-off
cross
cross
cross
cross
cross-on
on
on
on
cross-on
cross-off
cross
cross-on
cross
cross
cross
cross
cross-off
cross-off
cross-off
off
High Tide
4:23AM0.26m
4:36PM0.28m
4:55AM0.24m
5:15PM0.27m
5:29AM0.23m
5:59PM0.26m
Low Tide
9:48AM0.02m
10:15PM0.02m
10:23AM0.01m
10:52PM0.02m
11:02AM0.00m
cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
7:05
—
—
—
—
—
—
—
7:07
—
—
—
—
—
—
—
7:09
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
—
7:07
—
—
—
—
—
—
—
7:05
—
—
—
—
—
—
—
7:01
—
—
 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
14
14
14
14
13
15
15
14
14
13
13
12
13
15
16
14
13
13
13
13
13
13
13
14
Feels °C
14
14
12
11
9
10
9
8
10
10
10
9
10
11
9
7
6
6
7
7
8
9
9
10
  • 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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