Waves in Porto do Mangue

Hourly wave forecast for 7 days · updated today, Wednesday, October 28, at 10:16 pm (GMT-3)

Now · significant height 4.1 ft

Sea state: Moderate · Douglas 4
Period: 5.7 s · ENE
Swell: 1.7 ft · 5 s
Highest expected: 8.5 ft

Today the sea at Porto do Mangue is moderate: 4.1 ft waves with a period of 5.7 s from the east-northeast. The swell, 1.7 ft at 5 s, comes from the northeast. Biggest waves: Thursday 29, with waves up to 5.3 ft (moderate).

Wave height, next 7 days

2.04.06.0 ft 5.3 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 expected8.5 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 8.5 ft. Before heading out, expect waves of up to 8.5 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	4.6 ft	Moderate	NE	7 s	1.9 ft NNE	16 mph E
Thu 29	5.3 ft	Moderate	ENE	7 s	2.0 ft NNE	16 mph ENE
Fri 30	4.4 ft	Moderate	NE	8 s	2.3 ft N	16 mph NE
Sat 31	5.2 ft	Moderate	NE	8 s	2.4 ft N	15 mph ENE
Sun 1	5.0 ft	Moderate	NE	7 s	2.5 ft NNE	16 mph ENE
Mon 2	4.9 ft	Moderate	ENE	7 s	2.4 ft NE	18 mph ENE
Tue 3	4.9 ft	Moderate	ENE	8 s	2.4 ft NE	16 mph ENE

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	2.9 ft	2.8 ft	3.0 ft	4.3 ft	4.6 ft	4.4 ft
Period	6.1 s	6.1 s	6.3 s	6.7 s	6.2 s	5.4 s	5.6 s	5.6 s
Direction	NE	NE	NE	NE	NE	NE	ENE	ENE
Swell	1.9 ft · 9 s	1.7 ft · 8 s	1.8 ft · 6 s	1.8 ft · 4 s	1.7 ft · 8 s	1.5 ft · 8 s	1.1 ft · 7 s	1.6 ft · 5 s
Wind (mph)	5 ESE	7 E	8 ESE	12 SE	9 ESE	9 NE	16 ESE	15 E

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	3.3 ft NE	8 s	2.0 ft N
Mon 26	2.6 ft NNE	9 s	2.0 ft N
Sun 25	3.6 ft NE	7 s	2.3 ft NE
Sat 24	4.9 ft ENE	6 s	2.3 ft NE
Fri 23	5.2 ft NE	9 s	2.3 ft NNE
Thu 22	4.6 ft ENE	8 s	2.3 ft NNE
Wed 21	4.9 ft ENE	7 s	2.6 ft NE

Show all 14 days

Day	Max wave	Period	Swell
Tue 20	4.6 ft NE	7 s	2.3 ft NE
Mon 19	4.3 ft NE	9 s	2.0 ft N
Sun 18	3.6 ft NE	8 s	2.0 ft NNE
Sat 17	4.3 ft NE	6 s	2.3 ft NE
Fri 16	4.3 ft ENE	6 s	2.3 ft NE
Thu 15	4.3 ft ENE	6 s	3.0 ft NE
Wed 14	4.6 ft ENE	6 s	2.3 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 Porto do MangueQuestions

How are the waves today in Porto do Mangue?

Moderate (4.1 ft with a period of 5.7 s from the east-northeast). The highest wave to expect is around 8.5 ft.

Which day will have the biggest waves this week?

Thursday 29, with waves up to 5.3 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 8.5 ft.

More about Porto do Mangue today

Waves near Porto do Mangue

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 13 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 10:16 pm (local time).

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