Waves in Tønsberg

Hourly wave forecast for 7 days · updated today, Wednesday, October 28, at 11:47 pm (CET)

Now · significant height 2.0 ft

Sea state: Slight · Douglas 3
Period: 4.8 s · SSW
Swell: 1.8 ft · 4 s
Highest expected: 4.2 ft

Today the sea at Tønsberg is slight: 2.0 ft waves with a period of 4.8 s from the south-southwest. The swell, 1.8 ft at 4 s, comes from the south-southwest.

Wave height, next 7 days

1.02.03.0 ft 3.0 ft Now

Significant height: the average of the highest third of the waves, what an observer would estimate by eye. Swell: waves arriving from far away, longer.

The waves you may find today

Most common1.0 ft
Significant2.0 ft
Highest expected4.2 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 4.2 ft. Before heading out, expect waves of up to 4.2 ft.

The Douglas sea state scale

Degree	Name	Wave height
0	Calm (glassy)	0
1	Calm (rippled)	0.0 ft–0.3 ft
2	Smooth	0.3 ft–1.6 ft
3	Slight · today	1.6 ft–4.1 ft
4	Moderate	4.1 ft–8.2 ft
5	Rough	8.2 ft–13.1 ft
6	Very rough	13.1 ft–19.7 ft

Waves day by day

Day	Max wave	Sea state	Direction	Max period	Swell	Max wind
Today	3.0 ft	Slight	SSW	6 s	2.0 ft SSW	13 mph SSW
Thu 29	2.0 ft	Slight	SSW	5 s	1.8 ft SSW	6 mph SW
Fri 30	1.0 ft	Smooth	SSW	5 s	1.0 ft SSW	3 mph WNW
Sat 31	0.8 ft	Smooth	SSW	4 s	0.7 ft SSW	5 mph NE
Sun 1	1.0 ft	Smooth	S	4 s	1.0 ft SSW	8 mph ENE
Mon 2	0.9 ft	Smooth	ESE	4 s	0.5 ft S	10 mph N
Tue 3	0.1 ft	Calm (rippled)	SSW	3 s	0.1 ft SSW	5 mph NW

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Waves	3.0 ft	2.8 ft	2.5 ft	2.2 ft	2.2 ft	2.3 ft	2.4 ft	2.2 ft
Period	5.5 s	5.4 s	5.2 s	5.3 s	5.0 s	4.6 s	4.6 s	4.7 s
Direction	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW
Swell	1.9 ft · 6 s	2.0 ft · 5 s	2.0 ft · 5 s	1.9 ft · 5 s	1.7 ft · 5 s	1.4 ft · 5 s	1.5 ft · 5 s	1.6 ft · 5 s
Wind (mph)	12 SSW	12 SW	9 SW	8 SW	12 SW	11 SSW	8 SSW	13 S

Previous days

The waves over the last 14 days. Tap a day to see it hour by hour.

Day	Max wave	Period	Swell
Tue 27	4.6 ft S	7 s	2.6 ft SSW
Mon 26	6.9 ft SSW	10 s	6.2 ft SSW
Sun 25	7.2 ft S	8 s	6.2 ft S
Sat 24	3.3 ft SE	5 s	2.0 ft SSE
Fri 23	2.0 ft S	6 s	1.6 ft S
Thu 22	2.3 ft SSE	5 s	2.0 ft S
Wed 21	1.6 ft ESE	4 s	1.3 ft SSE

Show all 14 days

Day	Max wave	Period	Swell
Tue 20	1.3 ft E	3 s	0.7 ft SSE
Mon 19	0.3 ft SSE	4 s	0.3 ft SSE
Sun 18	0.3 ft SSW	6 s	0.3 ft SSW
Sat 17	1.3 ft NW	6 s	0.7 ft SSW
Fri 16	3.0 ft SSW	6 s	2.3 ft SSW
Thu 15	3.6 ft SSW	5 s	1.6 ft SSW
Wed 14	3.6 ft SSW	8 s	3.0 ft SSW

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the waves in TønsbergQuestions

How are the waves today in Tønsberg?

Slight (2.0 ft with a period of 4.8 s from the south-southwest). The highest wave to expect is around 4.2 ft.

Which day will have the biggest waves this week?

Wednesday 28, with waves up to 3.0 ft (slight).

What is the wave period?

The time, in seconds, between two crests. With long periods (over 10 s) waves come from far away, are cleaner and break harder; with short periods they are wind waves, choppier.

What is significant wave height?

The average of the highest third of the waves. One in seven is higher and, a few times a day, one comes in at almost double: today, about 4.2 ft.

More about Tønsberg today

Waves near Tønsberg

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Waves: Open-Meteo with Météo-France (MFWAM, up to 10 days) and ECMWF WAM, CC BY 4.0; wave grid point 4.3 mi away. Near the shore, the seabed and the shape of the coast change the waves.

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 11:47 pm (local time).

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