Valnäs - Nord Koster Surf Forecast

/ Kattegat and Skagerrack (6 surf breaks) /

Sweden (16 surf breaks) / Lat Long: (58.91° N 10.99° E)

Surf Forecasts:

Valnäs - Nord Koster surfForecast / Kattegat and Skagerrack / Sweden

12 Day Weather and Surf, issued 7 pm Friday 29 Aug 2025 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 16.3° 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 12 days are 2.1m 7s and forecast to arrive on Friday (Sep 05) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 7s period and expected on Friday (Sep 05) at 8AM.

Wave Type	Time (CEST) & Date	Wave Height & Period
Next good surf (1 star+)	-	-
Best Surf	-	-
Most Powerful	2PM (Fri 5th Sep)	7ft (2.1m) 7s

Table - best surf conditions forecast for Valnäs - Nord Koster over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Light rain (total 3mm), mostly falling on Sat night. Warm (max 20°C on Mon afternoon, min 15°C on Sat morning). Wind will be generally light.										Days 3-6 Weather Summary Light rain (total 7mm), mostly falling on Mon night. Very mild (max 18°C on Mon night, min 15°C on Thu morning). Winds increasing (calm on Wed morning, fresh winds from the S by Thu morning).
		Saturday 30			Sunday 31			Monday 01			Tuesday 02			Wednesday 03			Thursday 04			Fri 05
	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	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	SW	SW	SW	SSW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SSE	S	SSW	SSW	SW
Period(s) (?)	5	5	6	4	6	6	7	8	7	6	6	6	7	7	6	6	4	5	6	7	7
Wave Graph (?)
Energy (?)	1	1	3	0	31	0	44	57	0	14	6	10	33	16	15	6	0	0	0	0	408
Wind (km/h)	WSW	ESE	W	SSW	SSE	S	SSE	ESE	SSE	SSW	SSE	S	SE	ESE	W	SSW	SSE	S	SSE	SSE	SSE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	glass	cross- off	glass	cross- off	off	cross- off	cross- off	off	off	cross- off	cross- off	cross- off	off	glass	cross- on	cross- off	off	cross- off	cross- off	off	cross- off
High Tide / height (m)	11:32PM 0.26		11:52AM 0.22	12:30AM 0.28		12:45PM 0.24	1:20AM 0.29		1:31PM 0.25	2:03AM 0.31		2:12PM 0.27	2:41AM 0.31		2:48PM 0.28	3:16AM 0.31		3:23PM 0.29	3:49AM 0.30		3:57PM 0.29
Low Tide / height (m)		6:40AM 0.13	4:57PM 0.11		7:43AM 0.13		6:22PM 0.11	8:14AM 0.13		7:16PM 0.10	8:27AM 0.12		7:52PM 0.09	8:35AM 0.11		8:23PM 0.07	8:52AM 0.09		8:56PM 0.05	9:17AM 0.06

		Saturday 30			Sunday 31			Monday 01			Tuesday 02			Wednesday 03			Thursday 04			Fri 05
Sunrise	-	6:07	-	-	6:09	-	-	6:11	-	-	6:13	-	-	6:16	-	-	6:18	-	-	6:20	-
Sunset	-	-	8:23	-	-	8:21	-	-	8:17	-	-	8:15	-	-	8:12	-	-	8:09	-	-	8:07

Rain (mm)	-	-	-	1	-	-	1	1	-	7	-	-	-	-	-	-	-	-	3	-	-
Temp. °C	17	17	18	18	16	18	18	17	20	18	16	17	17	16	16	16	17	17	17	17	20
Feels °C (?)	18	17	17	15	13	15	15	13	17	18	14	15	16	16	15	14	11	11	11	12	14

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Kattegat and Skagerrack

Wind Update Still cross-shore at Valnäs - Nord Koster (fresh winds from the WSW at Nordkoster 2 km from Valnäs - Nord Koster). 0.2m 5s windswell from the SW to make surfable waves.
1 hour 55 minutes ago Valnäs - Nord Koster

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1 h 55 min ago

36 km/h

WSW

Cross-Shore

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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 12 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.