Valnäs - Nord Koster Surf Break

Valnäs - Nord Koster Surf Forecast and Surf Report

Lat Long: 58.91° N 10.99° E

Issued: 7 pm 28 Jun 2026 (local time)

Forecast update in  hr  min

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

2.1°C warmer than normal for this time of year

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


Valnäs - Nord Koster surf forecast from 28 Jun 2026:

  • Most powerful swell: Friday 3 Jul, 8AM (local time) - 10ft (3.0m), 9s period, WSW swell with 1,430 kJ wave energy.

Best Forecast Surf Conditions for Valnäs - Nord Koster this week:

The most powerful waves expected at Valnäs - Nord Koster in the next 16 days are 3.0m 9s and forecast to arrive on Friday (Jul 03) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Friday (Jul 03) at 2AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Fri 3rd Jul)10ft (3.0m) 9s

Table - best surf conditions forecast for Valnäs - Nord Koster over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 19°C on Sun night, min 14°C on Tue morning). Winds decreasing (near gales from the SW on Mon afternoon, light winds from the W by Tue morning).

Days 5-7 Weather Summary

Moderate rain (total 12mm), heaviest on Thu night. Warm (max 20°C on Fri night, min 14°C on Thu afternoon). Winds increasing (light winds from the SW on Wed night, strong winds from the WSW by Sat morning).

Monday
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sun
5
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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)
0.7
SW
4
1.5
SW
6
2.2
SW
6
1.7
SW
7
0.9
SW
6
0.6
SW
6
1.3
SW
6
1.1
SW
6
0.6
SW
5
1
SW
7
0.9
SSW
6
1.6
SW
6
2.5
SW
7
3
WSW
9
1.7
SW
8
2.1
SW
7
2.1
SW
7
2
SW
7
0.8
SW
7
0.9
SW
7
0.9
SW
7
Wave Graph
Metric surfscale
Energy kJ
0
0
0
263
66
0
132
72
21
0
0
0
0
1430
389
444
382
368
64
79
69
Wind (km/h)
25
SSW
40
SW
50
SW
30
WSW
10
NNW
20
SSW
25
SSW
20
S
20
S
15
S
20
S
35
SW
20
WSW
15
WNW
20
NW
40
WSW
45
WSW
25
WSW
25
NNW
15
WNW
15
SW
Wind State
cross-off
cross
cross
cross
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-on
on
cross-on
cross
cross
on
cross-on
cross
High Tide
5:28AM0.31m
5:42PM0.28m
6:11AM0.31m
6:27PM0.28m
6:57AM0.29m
7:15PM0.27m
7:45AM0.27m
8:06PM0.26m
8:35AM0.24m
8:59PM0.25m
9:27AM0.22m
9:53PM0.24m
10:20AM0.20m
Low Tide
10:30PM0.07m
11:04AM0.09m
11:08PM0.08m
11:38AM0.10m
11:48PM0.08m
12:14PM0.09m
00:29AM0.08m
12:51PM0.09m
1:13AM0.08m
1:29PM0.08m
1:58AM0.08m
2:09PM0.07m
2:46AM0.08m
2:52PM0.07m
clear
cloud
clear
clear
part cloud
cloud
part cloud
part cloud
clear
clear
cloud
light rain
rain showers
part cloud
clear
part cloud
light rain
rain showers
rain showers
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:07
4:07
4:09
4:09
4:11
4:11
4:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
10:30
10:30
10:30
10:30
10:29
10:28
10:27
10:25
 mm
2
6
1
3
1
Temp °C
19
17
17
18
16
16
15
15
16
16
15
15
16
16
18
20
15
16
16
13
15
Feels °C
17
11
8
10
15
13
11
12
13
15
12
9
11
14
14
13
8
12
12
9
9
Swell 1
Height (m)
Direction
Period (s)
0.9
SW
6
0.9
SW
6
0.9
SW
6
0.6
SW
5
1
SW
7
0.9
SSW
6
2.1
SW
9
0.8
SW
7
0.9
SW
7
0.9
SW
7
Energy kJ
66
62
47
21
85
65
683
64
79
69
Swell 2
Height (m)
Direction
Period (s)
0.3
S
6
0.1
S
6
Energy kJ
6
1
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
0.7
SW
4
1.5
SW
6
2.2
SW
6
1.7
SW
7
0.6
SW
6
1.3
SW
6
1.1
SW
6
1.6
SW
6
2.5
SW
7
3
WSW
9
1.7
SW
8
2.1
SW
7
2.1
SW
7
2
SW
7
1.1
NW
5
0.9
NW
4
0.3
NW
3
Energy kJ
17
136
384
263
27
132
72
176
671
1430
389
444
382
368
54
29
2
Nearest Offshore or Glassy
Rating
(10 max)
1
3
2
3
3
2
1
1
1
2
1
1
2
2
2
1
1
1
1
2
4
Distance (km)
265
1139
1139
1069
800
818
312
479
815
66
66
482
66
764
66
875
1060
1253
399
312
498
Best forecast wave conditions in Kattegat and Skagerrack
Rating
(10 max)
Best forecast wave conditions in Sweden
Rating
(10 max)
1
Header Global
Rating
(10 max)
9
7
5
5
5
5
5
5
5
5
8
6
5
5
6
7
5
5
9
9
9
  • 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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Information about the Valnäs - Nord Koster Surf forecast

The above surf forecast table for Valnäs - Nord Koster provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Valnäs - Nord Koster can be found by selecting the local surf guide option on the grey menu. Our Valnäs - Nord Koster surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Valnäs - Nord Koster) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Valnäs - Nord Koster may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Valnäs - Nord Koster is 32 km (20 miles) from Fredrikstad. If you plan a holiday in Kattegat and Skagerrack, look for hotels and other accommodation in Fredrikstad. Fredrikstad has rooms for a wide range of budgets as well as car hire and transport links.

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