Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 1 am 31 Aug 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
17.8°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 (31 Aug):

  • Morning surf: Morning surf (31 Aug, local time) - 5ft (1.6m), 7s period with SW swell.
  • Evening surf: Evening surf (31 Aug, local time) - 2ft (0.6m), 5s period with SW swell.

The current surf forecast for Valnäs - Nord Koster at 10AM is: 1.4m 6s primary swell from a Southwest direction (forecast issued at 01:00am August 31). An open ocean swell of 1.1m 7s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (CEST) & DateWave HeightWave Period
Morning (31 Aug)5ft (1.6m)7s
Afternoon (31 Aug)--
Evening (31 Aug)2ft (0.6m)5s

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


Short Range Forecast

Mostly dry. Very mild (max 17°C on Tue afternoon, min 13°C on Wed night). Winds increasing (calm on Mon night, strong winds from the WSW by Tue night).

Monday
31
Tuesday
1
Wednesday
2
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)
1.6
SW
7
1.8
SW
7
1.6
SW
7
1.4
SW
6
1.2
SW
6
0.8
SSW
6
0.7
SW
5
0.1
SW
7
0.4
SW
4
0.3
SW
4
0.3
SW
4
0.3
SW
4
0.1
SW
6
0.1
SW
6
0.6
SSW
6
1.9
SW
7
2.1
SW
7
1.9
SW
6
1.8
SW
6
1.8
SW
6
1.7
SW
6
1.8
SW
6
1.7
SW
6
1.6
SW
6
Wave Graph
Metric surfscale
Energy kJ
233
284
213
156
0
0
0
2
4
2
2
2
2
2
0
325
410
302
236
247
231
244
239
202
Wind (km/h)
25
SW
25
SW
25
SW
25
SW
25
SW
25
SSW
15
SSW
10
SSW
5
S
5
SE
10
SE
10
SSE
15
S
15
SW
20
SSW
45
WSW
50
WSW
45
WSW
45
WSW
50
WSW
45
WSW
40
WSW
40
W
40
W
Wind State
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
glassy
off
off
cross-off
cross-off
cross
cross-off
cross-on
cross-on
cross
cross-on
cross-on
cross
cross
cross-on
cross-on
High Tide
7:45AM0.20m
8:37PM0.23m
8:54AM0.19m
9:48PM0.23m
10:06AM0.19m
10:55PM0.25m
Low Tide
00:46AM0.05m
12:58PM0.03m
1:35AM0.06m
1:48PM0.04m
2:31AM0.08m
2:47PM0.05m
clear
clear
clear
part cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
cloud
cloud
clear
cloud
part cloud
clear
part cloud
cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:11
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:21
8:17
8:15
 mm
Temp °C
17
16
16
16
16
16
16
16
16
16
15
16
17
17
17
17
15
16
15
15
16
17
17
14
Feels °C
13
12
11
11
12
12
14
15
16
16
14
15
15
15
14
8
6
8
5
5
7
9
8
5
  • 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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