ariasurf

Knemstranda/Bokerøya

Svelvik, Norge

Right now

Conditions at 1:00 AM Central European Summer Time.

Poor

Flat (0.1 m) at 4 s, heading toward N, with moderate cross-shore wind toward NNE.

Swell

0.1 m

4 s

Wind

13 km/h

NNE

Cross-shore

Tide

1 m

Rising

Weather

12 °C

Clear

16 °C water

7-day forecast

Wave height and the best conditions expected each day.

Hourly forecast

Sunday, September 20, 2026

Time	Rating	Swell	Swell direction	Wind	Wind direction	Tide	Weather
12 AM	Poor	0.1 m · 4 s	N	11 km/h · 21 km/h gusts	NNE Cross-shore	0.9 m	Clear · 13 °C
1 AM	Poor	0.1 m · 4 s	N	13 km/h · 26 km/h gusts	NNE Cross-shore	1 m	Clear · 12 °C
2 AM	Poor	0.1 m · 4 s	N	13 km/h · 27 km/h gusts	NNE Cross-shore	1 m	Clear · 12 °C
3 AM	Poor	0.1 m · 4 s	N	13 km/h · 27 km/h gusts	NNE Cross-shore	0.9 m	Clear · 12 °C
4 AM	Poor	0.1 m · 4 s	N	13 km/h · 27 km/h gusts	NNE Cross-shore	0.9 m	Clear · 11 °C
5 AM	Poor	0.1 m · 4 s	N	14 km/h · 29 km/h gusts	NNE Cross-shore	0.8 m	Clear · 11 °C
6 AM	Poor	0.1 m · 4 s	NNE	13 km/h · 28 km/h gusts	NNE Cross-shore	0.8 m	Mostly clear · 11 °C
7 AM	Poor	0.1 m · 4 s	NNE	13 km/h · 27 km/h gusts	NNE Cross-shore	0.8 m	Overcast · 12 °C
8 AM	Poor	0.1 m · 4 s	NNE	13 km/h · 27 km/h gusts	N Cross-shore	0.8 m	Overcast · 12 °C
9 AM	Poor	0.1 m · 4 s	NNE	16 km/h · 33 km/h gusts	N Cross-shore	0.8 m	Overcast · 13 °C
10 AM	Poor	0.1 m · 4 s	NNE	18 km/h · 36 km/h gusts	NNE Cross-shore	0.9 m	Overcast · 14 °C
11 AM	Poor	0.1 m · 4 s	NNE	18 km/h · 38 km/h gusts	NNE Cross-shore	0.9 m	Overcast · 15 °C
12 PM	Poor	0.1 m · 4 s	NNE	18 km/h · 37 km/h gusts	NNE Offshore	0.9 m	Overcast · 16 °C
1 PM	Poor	0.1 m · 3 s	N	15 km/h · 37 km/h gusts	NE Offshore	0.9 m	Overcast · 17 °C
2 PM	Poor	0.1 m · 2 s	N	12 km/h · 33 km/h gusts	ENE Offshore	0.9 m	Overcast · 18 °C
3 PM	Poor	0.1 m · 2 s	N	12 km/h · 30 km/h gusts	E Offshore	0.8 m	Overcast · 19 °C
4 PM	Poor	0.1 m · 3 s	N	13 km/h · 31 km/h gusts	E Offshore	0.7 m	Mostly clear · 19 °C
5 PM	Poor	0.1 m · 4 s	N	13 km/h · 31 km/h gusts	ESE Offshore	0.6 m	Partly cloudy · 19 °C
6 PM	Poor	0.1 m · 4 s	NNE	13 km/h · 32 km/h gusts	ESE Offshore	0.6 m	Partly cloudy · 18 °C
7 PM	Poor	0.1 m · 3 s	NE	8 km/h · 28 km/h gusts	E Offshore	0.6 m	Partly cloudy · 16 °C
8 PM	Poor	0.1 m · 3 s	ENE	7 km/h · 18 km/h gusts	E Offshore	0.6 m	Overcast · 15 °C
9 PM	Poor	0.1 m · 3 s	NE	11 km/h · 23 km/h gusts	E Offshore	0.5 m	Overcast · 15 °C
10 PM	Poor	0.1 m · 3 s	NNE	17 km/h · 35 km/h gusts	ESE Offshore	0.6 m	Overcast · 15 °C
11 PM	Poor	0.1 m · 4 s	N	18 km/h · 39 km/h gusts	SE Offshore	0.7 m	Partly cloudy · 14 °C