Waves in Shimen District

Hourly wave forecast for 7 days · updated today, Thursday, October 29, at 8:47 am (GMT+8)

Now · significant height 4.1 ft

Sea state: Slight · Douglas 3
Period: 7.2 s · NE
Swell: 4.0 ft · 6 s
Highest expected: 8.4 ft

Today the sea at Shimen District is slight: 4.1 ft waves with a period of 7.2 s from the northeast. The swell, 4.0 ft at 6 s, comes from the northeast.

Wave height, next 7 days

2.04.06.0 ft 5.6 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 common2.1 ft
Significant4.1 ft
Highest expected8.4 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 8.4 ft. Before heading out, expect waves of up to 8.4 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 · week peak	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	5.6 ft	Moderate	NE	7 s	5.0 ft NE	11 mph E
Fri 30	3.1 ft	Slight	NE	7 s	2.8 ft NE	11 mph NE
Sat 31	4.5 ft	Moderate	ENE	5 s	2.6 ft NE	15 mph E
Sun 1	4.2 ft	Moderate	ENE	9 s	3.2 ft ENE	14 mph SSE
Mon 2	5.3 ft	Moderate	NE	11 s	3.8 ft NE	13 mph NE
Tue 3	5.2 ft	Moderate	NE	7 s	4.1 ft NNE	13 mph ENE
Wed 4	4.2 ft	Moderate	NE	8 s	3.0 ft NE	10 mph E

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	5.6 ft	5.0 ft	4.5 ft	4.1 ft	3.7 ft	3.5 ft	3.3 ft	3.1 ft
Period	7.0 s	7.1 s	7.1 s	7.2 s	7.1 s	7.0 s	6.9 s	6.8 s
Direction	NE	NE	NE	NE	NE	NE	NE	NE
Swell	5.0 ft · 6 s	4.5 ft · 6 s	4.2 ft · 6 s	3.9 ft · 6 s	3.6 ft · 6 s	3.3 ft · 6 s	3.1 ft · 6 s	3.0 ft · 6 s
Wind (mph)	11 E	9 E	8 E	8 E	9 ENE	9 ENE	7 E	6 E

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	9.8 ft NNE	8 s	7.2 ft NNE
Tue 27	8.2 ft NNE	9 s	6.9 ft NNE
Mon 26	8.2 ft NNE	9 s	7.5 ft NNE
Sun 25	9.5 ft NNE	9 s	9.2 ft NNE
Sat 24	18 ft N	11 s	11 ft NNE
Fri 23	18 ft NE	11 s	10 ft ENE
Thu 22	16 ft NNE	10 s	7.5 ft NNE

Show all 14 days

Day	Max wave	Period	Swell
Wed 21	11 ft NE	9 s	7.2 ft NE
Tue 20	2.6 ft ENE	8 s	2.3 ft ENE
Mon 19	3.0 ft ENE	7 s	2.6 ft ENE
Sun 18	3.3 ft ENE	6 s	2.3 ft ENE
Sat 17	3.0 ft ENE	5 s	1.6 ft NE
Fri 16	3.6 ft NE	7 s	3.0 ft NE
Thu 15	5.2 ft NE	7 s	4.6 ft NE

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 Shimen DistrictQuestions

How are the waves today in Shimen District?

Slight (4.1 ft with a period of 7.2 s from the northeast). The highest wave to expect is around 8.4 ft.

Which day will have the biggest waves this week?

Thursday 29, with waves up to 5.6 ft (moderate).

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 8.4 ft.

More about Shimen District today

Waves near Shimen District

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 6.0 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 8:47 am (local time).

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