Valnäs - Nord Koster surfForecast / Kattegat and Skagerrack / Sweden

information circle16 Day Weather and Surf, issued 1 am Saturday 18 Apr 2026 CEST
Forecast update in hr  min  s Forecast update imminent
Valnäs - Nord Koster surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Valnäs - Nord Koster sea temperature is
5.7° C
(Which is normal for this time of year)

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 1.2m 5s and forecast to arrive on Friday (Apr 24) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Saturday (Apr 25) at 5AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Fri 24th Apr)4ft (1.2m) 5s

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 Heavy rain (total 25mm), heaviest during Sat night. Very mild (max 13°C on Mon night, min 2°C on Sun night). Winds increasing (light winds from the S on Sat afternoon, fresh winds from the ESE by Sun morning).

Days 3-6 Weather Summary Mostly dry. Very mild (max 17°C on Tue afternoon, min 6°C on Thu morning). Mainly fresh winds.

Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.3
SW
0.1
SW
0.3
SW
0.2
WSW
0.1
SW
0.1
W
0.1
SW
0.1
SW
0.2
WSW
0.1
SW
0.3
SW
0.8
NE
0.9
N
0.9
NNW
1.1
N
1.2
N
0.4
N
1.1
SW
Period(s) (?)66566876---3424444545
Wave
Graph
(?)Metric surfscale
Energy kJ (?)51541121000111152729506240
Wind
(km/h)
10
SE
10
S
15
ESE
25
E
30
E
20
ENE
25
ENE
15
NNW
10
NNW
20
N
20
NW
20
N
15
N
15
WSW
35
NE
25
NNE
20
NW
10
NNE
10
ENE
10
W
20
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
on
oncross-
on
oncross-
on
cross-
on
crosscrosscrossoncrosscross-
off
cross-
on
cross
High Tide
/ height (m)
6:12PM
0.24
7:01AM
0.28
7:21PM
0.24
8:16AM
0.28
8:39PM
0.25
9:29AM
0.29
9:52PM
0.27
10:37AM
0.30
10:58PM
0.28
11:39AM
0.31
11:58PM
0.30
12:35PM
0.31
12:52AM
0.31
Low Tide
/ height (m)
11:36AM
0.01
11:52PM
-0.00
12:28PM
0.03
12:48AM
0.01
1:27PM
0.06
1:51AM
0.03
2:32PM
0.07
3:01AM
0.05
3:46PM
0.08
4:18AM
0.05
5:03PM
0.08
5:36AM
0.04
6:13PM
0.06
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Sunrise5:56--5:52--5:50--5:47--5:45--5:41--5:39--
Sunset-8:36--8:37--8:40--8:43--8:45--8:47--8:50-
cloud
cloud
heavy rain
mod rain
mod rain
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
light rain
Rain (mm)
--1186---------------1
Temp. °C910888107111310171710111191311988
Feels °C (?)57522314951111556374645
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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