Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 1 pm 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
17.5°C
1.7° 

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 (04 Sep):

  • Morning surf: Morning surf (04 Sep, local time) - 2.5ft (0.8m), 7s period with SW swell.
  • Afternoon surf: Afternoon surf (04 Sep, local time) - 2.5ft (0.8m), 7s period with SW swell.
  • Evening surf: Evening surf (04 Sep, local time) - 2ft (0.6m), 7s period with SW swell.

The current surf forecast for Valnäs - Nord Koster at 6PM is: 0.7m 7s primary swell from a Southwest direction (forecast issued at 01:00pm September 04). The wind direction is predicted to be cross-onshore.

Time (CEST) & DateWave HeightWave Period
Morning (04 Sep)2.5ft (0.8m)7s
Afternoon (04 Sep)2.5ft (0.8m)7s
Evening (04 Sep)2ft (0.6m)7s

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


Short Range Forecast

Moderate rain (total 13mm), heaviest on Sun night. Very mild (max 17°C on Sat night, min 12°C on Fri night). Winds increasing (calm on Sat night, strong winds from the WSW by Sun night).

Fri
4
Saturday
5
Sunday
6
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
1
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
Wave
Height (m)
Direction
Period (s)
1
SW
7
0.9
SW
7
0.8
SW
7
0.6
SW
7
0.5
SW
7
0.5
SW
7
0.7
SW
6
0.7
SW
6
1
SW
8
1
SW
8
1
SW
8
0.8
SW
8
0.8
SW
7
0.7
SW
7
0.7
SW
7
0.7
SW
7
0.6
SW
7
0.6
SW
7
0.6
SW
7
1
SW
7
1.9
SW
7
Wave Graph
Metric surfscale
Energy kJ
100
82
55
38
0
0
40
41
111
126
129
90
77
52
47
45
29
29
28
86
321
Wind (km/h)
10
N
15
N
15
N
15
NE
10
NNE
10
N
5
N
5
SE
5
ESE
10
N
20
NW
15
W
15
W
5
NW
5
ENE
5
SE
5
SSW
15
SW
20
SSW
40
WSW
40
WSW
Wind State
cross-on
cross-on
cross-on
cross
cross
cross-on
cross-on
glassy
glassy
cross-on
on
cross-on
cross-on
on
glassy
off
cross-off
cross
cross-off
cross-on
cross
High Tide
12:12PM0.24m
00:51AM0.29m
1:04PM0.26m
1:40AM0.31m
1:53PM0.29m
Low Tide
5:11PM0.06m
6:10AM0.10m
6:23PM0.05m
7:12AM0.08m
7:25PM0.03m
cloud
part cloud
cloud
cloud
part cloud
cloud
light rain
cloud
light rain
rain showers
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:09
8:07
8:04
 mm
1
1
1
Temp °C
13
13
13
13
13
13
12
12
13
14
15
16
17
16
15
14
15
15
16
16
15
Feels °C
11
11
9
10
11
11
11
11
12
12
11
12
14
15
14
13
14
12
12
8
8
  • 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
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Valnäs - Nord Koster surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Nearest locationNearest