Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 7 pm 17 Sep 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
15.7°C
1.3° 

Valnäs - Nord Koster surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Time (CEST) & DateWave HeightWave Period
Morning (18 Sep)5ft (1.6m)6s
Afternoon (18 Sep)6ft (1.9m)7s
Evening (18 Sep)7ft (2.2m)7s

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


Short Range Forecast

Moderate rain (total 10mm), heaviest on Thu night. Very mild (max 16°C on Sat afternoon, min 13°C on Sat night). Winds increasing (fresh winds from the SSW on Thu night, near gales from the WSW by Sun afternoon).

Thu
17
Friday
18
Saturday
19
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)
1.1
SW
6
1.1
SSW
5
1.4
SSW
6
1.5
SW
6
1.7
SW
6
1.5
SW
6
1.8
SW
6
1.8
SW
7
2.1
SW
7
2.3
SW
7
2.2
SW
7
2.1
SW
7
1.8
SW
7
1.7
SW
6
1.9
SW
6
2.2
SW
7
3
SW
7
2.5
SW
8
2.3
SW
8
Wave Graph
Metric surfscale
Energy kJ
0
0
0
0
212
0
251
299
404
535
475
422
298
0
306
0
821
909
627
Wind (km/h)
30
SW
35
SSW
35
SSW
40
SW
35
SW
40
SW
45
WSW
45
WSW
45
WSW
45
WSW
45
WSW
45
WSW
40
SW
40
SSW
45
SW
50
SW
50
SW
50
WSW
45
WSW
Wind State
cross
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross-off
cross
cross
cross
cross
cross-on
High Tide
11:50PM0.28m
12:05PM0.25m
00:43AM0.30m
12:54PM0.27m
Low Tide
4:24PM0.10m
6:36AM0.13m
5:59PM0.10m
7:28AM0.13m
7:02PM0.10m
light rain
light rain
light rain
rain showers
cloud
light rain
cloud
clear
part cloud
clear
cloud
cloud
cloud
cloud
light rain
rain showers
rain showers
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:31
7:29
7:25
 mm
2
1
3
2
1
1
1
1
Temp °C
14
14
14
14
14
14
14
14
15
15
14
14
14
14
15
16
16
15
14
Feels °C
8
8
8
7
7
6
5
5
6
6
5
5
6
7
8
8
7
5
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
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