Valnäs - Nord Koster Surf Break

Lat Long: 58.91° N 10.99° E

Valnäs - Nord Koster 48 hour detailed Surf Forecast

Issued: 7 pm 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's Valnäs - Nord Koster sea temperature is
20.0° C
3.1° 

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 (18 Jul):

  • Afternoon surf: Afternoon surf (18 Jul, local time) - 3.5ft (1.1m), 4s period with N swell.
  • Evening surf: Evening surf (18 Jul, local time) - 3.5ft (1.1m), 5s period with N swell.

The current surf forecast for Valnäs - Nord Koster at 11PM is: 1.1m 4s primary swell from a North direction and 0.1m 6s secondary swell from a West direction (forecast issued at 07:00pm July 18). The wind direction is predicted to be cross-onshore.

Time (CEST) & DateWave HeightWave Period
Morning (18 Jul)--
Afternoon (18 Jul)3.5ft (1.1m)4s
Evening (18 Jul)3.5ft (1.1m)5s

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


Short Range Forecast

Heavy rain (total 20mm), heaviest during Sat night. Warm (max 23°C on Mon night, min 10°C on Sat night). Winds decreasing (strong winds from the NNE on Sat night, calm by Tue morning).

Sat
18
Sunday
19
Monday
20
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
N
5
1.2
N
5
1.1
N
4
1.2
N
5
1.2
N
5
1
N
4
0.8
NNE
4
0.4
NNE
4
0.1
W
6
0.1
W
6
0.1
W
6
0.4
N
3
0.5
N
3
0.4
NNW
3
0.2
NNW
3
Wave Graph
Metric surfscale
Energy kJ
51
60
48
60
62
41
24
4
0
0
1
1
1
2
5
3
1
0
0
Wind (km/h)
45
NNE
45
NNE
45
NNE
50
N
50
NNE
45
NNE
40
NNE
25
NE
20
E
10
SE
10
WSW
15
NW
25
NNE
25
N
25
N
25
NNW
25
NW
20
NNW
10
N
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross
cross-off
off
cross
on
cross-on
cross-on
cross-on
on
on
on
cross-on
High Tide
9:31PM0.28m
10:03AM0.24m
10:33PM0.27m
11:05AM0.23m
Low Tide
2:17PM0.01m
3:00AM0.02m
3:14PM0.03m
4:10AM0.04m
4:17PM0.04m
light rain
light rain
mod rain
light rain
light rain
light rain
light rain
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:35
4:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
10:08
10:07
10:05
 mm
1
3
6
5
2
3
1
Temp °C
12
12
12
12
10
10
10
13
14
15
15
15
14
14
18
20
22
23
20
Feels °C
3
3
3
2
0
1
2
7
9
12
13
11
9
8
12
14
15
17
18
  • 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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