Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 7 pm 15 Aug 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
17.7° C
0.3° 

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 (16 Aug):

  • Morning surf: Morning surf (16 Aug, local time) - 2.5ft (0.8m), 7s period with SW swell.
  • Afternoon surf: Afternoon surf (16 Aug, local time) - 1.5ft (0.4m), 6s period with SW swell.
  • Evening surf: Evening surf (16 Aug, local time) - 2ft (0.6m), 4s period with SW swell.

The current surf forecast for Valnäs - Nord Koster at 1AM is: 2.4m 8s primary swell from a Southwest direction and 1.6m 8s secondary swell from a Southwest direction (forecast issued at 07:00pm August 15). The wind direction is predicted to be cross-onshore.

Time (CEST) & DateWave HeightWave Period
Morning (16 Aug)2.5ft (0.8m)7s
Afternoon (16 Aug)1.5ft (0.4m)6s
Evening (16 Aug)2ft (0.6m)4s

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


Short Range Forecast

Mostly dry. Warm (max 20°C on Sat night, min 13°C on Mon night). Mainly fresh winds.

Sat
15
Sunday
16
Monday
17
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)
0.8
SSW
5
1.9
SW
7
2.4
SW
8
1.6
SW
8
1.2
SW
8
0.9
SW
7
0.7
SW
7
0.4
SW
6
0.6
SW
6
0.6
SW
4
0.4
SW
4
0.6
SW
8
0.6
SW
7
0.2
WSW
8
0.5
N
3
0.6
N
4
0.4
N
3
0.1
SW
5
0.1
SW
5
Wave Graph
Metric surfscale
Energy kJ
0
381
675
308
169
89
47
12
19
8
5
51
42
6
5
9
4
1
1
Wind (km/h)
20
S
20
SW
35
W
30
NW
30
N
20
N
10
NW
20
W
15
WSW
15
SSW
20
SE
15
ESE
15
ENE
20
NE
20
NE
20
N
20
NNW
15
NW
20
NW
Wind State
cross-off
cross
cross-on
on
cross-on
cross-on
on
cross-on
cross
cross-off
off
off
cross-off
cross
cross
cross-on
on
on
on
High Tide
7:57PM0.28m
8:26AM0.24m
9:01PM0.27m
9:30AM0.22m
10:07PM0.26m
Low Tide
1:27AM0.01m
1:41PM0.01m
2:24AM0.04m
2:35PM0.04m
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:35
5:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:05
9:02
9:00
 mm
Temp °C
18
20
19
17
15
15
16
17
18
17
16
15
15
15
15
17
16
18
18
Feels °C
16
17
14
12
10
11
14
14
15
14
13
12
13
11
10
13
11
14
14
  • 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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