Waves in Su’ao

Hourly wave forecast for 7 days · updated today, Thursday, October 29, at 7:42 am (GMT+8)

Now · significant height 5.0 ft

Sea state: Moderate · Douglas 4
Period: 8.0 s · NE
Swell: 4.7 ft · 7 s
Highest expected: 10 ft

Today the sea at Su’ao is moderate: 5.0 ft waves with a period of 8.0 s from the northeast. The swell, 4.7 ft at 7 s, comes from the northeast.

Wave height, next 7 days

2.04.06.0 ft 5.9 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 common2.5 ft
Significant5.0 ft
Highest expected10 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 10 ft. Before heading out, expect waves of up to 10 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	1.6 ft–4.1 ft
4	Moderate · today	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	5.9 ft	Moderate	NE	8 s	5.6 ft NE	5 mph SSW
Fri 30	4.1 ft	Slight	ENE	7 s	3.5 ft NE	7 mph W
Sat 31	5.0 ft	Moderate	ENE	7 s	4.5 ft ENE	9 mph E
Sun 1	4.7 ft	Moderate	E	10 s	4.5 ft ENE	4 mph NE
Mon 2	4.9 ft	Moderate	E	11 s	3.7 ft E	5 mph E
Tue 3	5.4 ft	Moderate	ENE	8 s	4.3 ft NE	7 mph ENE
Wed 4	5.6 ft	Moderate	ENE	8 s	4.8 ft ENE	5 mph W

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	5.9 ft	5.4 ft	5.1 ft	4.9 ft	4.8 ft	4.7 ft	4.5 ft	4.3 ft
Period	8.0 s	8.0 s	7.9 s	8.0 s	7.8 s	7.6 s	7.5 s	7.4 s
Direction	NE	NE	NE	NE	NE	ENE	ENE	ENE
Swell	5.6 ft · 7 s	5.2 ft · 7 s	4.9 ft · 7 s	4.6 ft · 7 s	4.1 ft · 7 s	3.5 ft · 7 s	3.7 ft · 6 s	3.7 ft · 6 s
Wind (mph)	2 WSW	1 W	2 W	0 S	5 E	4 E	2 WSW	3 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	9.5 ft NE	9 s	8.9 ft NE
Tue 27	6.9 ft NE	9 s	6.6 ft NE
Mon 26	8.2 ft NE	9 s	7.2 ft NNE
Sun 25	8.2 ft ENE	9 s	6.6 ft E
Sat 24	20 ft E	12 s	17 ft ESE
Fri 23	30 ft E	14 s	23 ft ESE
Thu 22	26 ft E	14 s	20 ft ESE

Show all 14 days

Day	Max wave	Period	Swell
Wed 21	16 ft ESE	14 s	13 ft ESE
Tue 20	6.6 ft E	12 s	6.2 ft ESE
Mon 19	3.9 ft E	7 s	3.0 ft NE
Sun 18	3.9 ft E	7 s	3.0 ft ESE
Sat 17	3.0 ft E	7 s	2.6 ft E
Fri 16	4.6 ft ENE	7 s	4.3 ft ENE
Thu 15	5.2 ft NE	7 s	5.2 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 Su’aoQuestions

How are the waves today in Su’ao?

Moderate (5.0 ft with a period of 8.0 s from the northeast). The highest wave to expect is around 10 ft.

Which day will have the biggest waves this week?

Thursday 29, with waves up to 5.9 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 10 ft.

More about Su’ao today

Waves near Su’ao

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 7.0 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 7:42 am (local time).

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