Waves in Sandy Bay

Hourly wave forecast for 7 days · updated today, Wednesday, October 28, at 6:48 pm (CST)

Now · significant height 2.3 ft

Sea state: Slight · Douglas 3
Period: 6.0 s · NNE
Swell: 2.2 ft · 5 s
Highest expected: 4.7 ft

Today the sea at Sandy Bay is slight: 2.3 ft waves with a period of 6.0 s from the north-northeast. The swell, 2.2 ft at 5 s, comes from the north-northeast.

Wave height, next 7 days

1.02.03.0 ft 2.9 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 common1.1 ft
Significant2.3 ft
Highest expected4.7 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 4.7 ft. Before heading out, expect waves of up to 4.7 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	2.9 ft	Slight	N	6 s	2.5 ft NNE	14 mph WNW
Thu 29	2.3 ft	Slight	NNE	6 s	2.1 ft NNE	9 mph W
Fri 30	1.4 ft	Smooth	NNE	6 s	1.2 ft NNE	8 mph W
Sat 31	1.1 ft	Smooth	NNE	6 s	1.0 ft N	10 mph ENE
Sun 1	1.2 ft	Smooth	NE	5 s	1.0 ft NE	9 mph NW
Mon 2	1.2 ft	Smooth	NE	5 s	0.9 ft ENE	11 mph WNW
Tue 3	1.0 ft	Smooth	ENE	6 s	0.8 ft E	10 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	2.9 ft	2.8 ft	2.9 ft	2.7 ft	2.5 ft	2.4 ft	2.3 ft	2.3 ft
Period	6.0 s	5.9 s	5.9 s	5.9 s	6.1 s	6.1 s	6.1 s	5.9 s
Direction	N	N	N	N	N	NNE	NNE	NNE
Swell	2.4 ft · 6 s	2.5 ft · 5 s	2.5 ft · 5 s	2.4 ft · 5 s	2.3 ft · 5 s	2.2 ft · 5 s	2.2 ft · 5 s	2.1 ft · 5 s
Wind (mph)	13 WNW	13 NW	13 WNW	14 W	9 W	6 WNW	6 WNW	3 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	3.6 ft NNW	6 s	2.3 ft N
Mon 26	3.6 ft N	6 s	3.0 ft N
Sun 25	3.3 ft N	6 s	3.3 ft N
Sat 24	2.6 ft N	5 s	2.6 ft N
Fri 23	3.0 ft NNE	7 s	2.6 ft N
Thu 22	2.0 ft NNE	7 s	2.0 ft NNE
Wed 21	3.0 ft NE	8 s	2.6 ft NE

Show all 14 days

Day	Max wave	Period	Swell
Tue 20	3.0 ft ENE	6 s	2.0 ft NE
Mon 19	3.0 ft ENE	7 s	2.0 ft ENE
Sun 18	3.3 ft ENE	5 s	2.0 ft ENE
Sat 17	3.3 ft ENE	6 s	3.0 ft ENE
Fri 16	4.3 ft ENE	6 s	3.3 ft ENE
Thu 15	4.3 ft ENE	6 s	2.6 ft ENE
Wed 14	2.0 ft NE	6 s	1.6 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 Sandy BayQuestions

How are the waves today in Sandy Bay?

Slight (2.3 ft with a period of 6.0 s from the north-northeast). The highest wave to expect is around 4.7 ft.

Which day will have the biggest waves this week?

Wednesday 28, with waves up to 2.9 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 4.7 ft.

More about Sandy Bay today

Waves near Sandy Bay

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 3.5 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 6:48 pm (local time).

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