Waves in Rönnäng

Hourly wave forecast for 7 days · updated today, Thursday, October 29, at 6:45 am (CET)

Now · significant height 3.1 ft

Sea state: Slight · Douglas 3
Period: 5.1 s · W
Swell: 1.4 ft · 6 s
Highest expected: 6.4 ft

Today the sea at Rönnäng is slight: 3.1 ft waves with a period of 5.1 s from the west. The swell, 1.4 ft at 6 s, comes from the west.

Wave height, next 7 days

1.02.03.0 ft 3.1 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 common1.5 ft
Significant3.1 ft
Highest expected6.4 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 6.4 ft. Before heading out, expect waves of up to 6.4 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	3.1 ft	Slight	W	5 s	2.2 ft W	13 mph W
Fri 30	2.3 ft	Slight	W	5 s	1.8 ft W	4 mph WSW
Sat 31	0.9 ft	Smooth	W	5 s	0.9 ft W	5 mph SSE
Sun 1	2.3 ft	Slight	WSW	4 s	1.4 ft W	9 mph SSE
Mon 2	1.6 ft	Smooth	NW	5 s	0.9 ft WNW	11 mph NNE
Tue 3	0.8 ft	Smooth	W	5 s	0.7 ft W	5 mph NNW
Wed 4	0.7 ft	Smooth	W	5 s	0.7 ft W	5 mph SSE

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	3.1 ft	3.1 ft	3.1 ft	2.9 ft	2.8 ft	2.9 ft	2.8 ft	2.6 ft
Period	5.5 s	5.3 s	5.2 s	5.0 s	4.8 s	4.7 s	4.6 s	4.5 s
Direction	WSW	WSW	W	W	W	W	W	W
Swell	2.2 ft · 6 s	1.8 ft · 7 s	1.5 ft · 6 s	1.4 ft · 6 s	1.4 ft · 6 s	1.2 ft · 6 s	1.4 ft · 5 s	1.4 ft · 5 s
Wind (mph)	13 SSW	9 WSW	8 W	9 W	12 W	11 W	7 W	5 W

Previous days

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

Day	Max wave	Period	Swell
Wed 28	3.3 ft WSW	6 s	2.6 ft W
Tue 27	4.3 ft SSW	7 s	3.3 ft W
Mon 26	9.5 ft W	10 s	5.2 ft W
Sun 25	5.9 ft SSW	7 s	3.0 ft WSW
Sat 24	4.9 ft SSE	5 s	1.3 ft SW
Fri 23	2.3 ft SW	7 s	1.6 ft WSW
Thu 22	2.0 ft S	4 s	1.0 ft SSW

Show all 14 days

Day	Max wave	Period	Swell
Wed 21	2.0 ft SE	4 s	1.3 ft SSE
Tue 20	1.3 ft ESE	6 s	0.3 ft SSE
Mon 19	0.3 ft SW	6 s	0.3 ft SSW
Sun 18	1.0 ft WNW	6 s	0.7 ft WNW
Sat 17	1.6 ft NW	5 s	1.3 ft W
Fri 16	3.3 ft WSW	6 s	2.3 ft W
Thu 15	3.6 ft SW	5 s	2.3 ft W

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 RönnängQuestions

How are the waves today in Rönnäng?

Slight (3.1 ft with a period of 5.1 s from the west). The highest wave to expect is around 6.4 ft.

Which day will have the biggest waves this week?

Thursday 29, with waves up to 3.1 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 6.4 ft.

More about Rönnäng today

Waves near Rönnäng

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 2.3 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 6:45 am (local time).

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