Waves in Roteiro

Hourly wave forecast for 7 days · updated today, Wednesday, October 28, at 8:28 pm (GMT-3)

Now · significant height 3.3 ft

Sea state: Slight · Douglas 3
Period: 7.5 s · SE
Swell: 1.6 ft · 8 s
Highest expected: 6.8 ft

Today the sea at Roteiro is slight: 3.3 ft waves with a period of 7.5 s from the southeast. The swell, 1.6 ft at 8 s, comes from the south-southwest. Biggest waves: Thursday 29, with waves up to 4.8 ft (moderate).

Wave height, next 7 days

1.02.03.04.05.0 ft 4.8 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 common1.7 ft
Significant3.3 ft
Highest expected6.8 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 6.8 ft. Before heading out, expect waves of up to 6.8 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	3.7 ft	Slight	ESE	8 s	2.8 ft ESE	11 mph ESE
Thu 29	4.8 ft	Moderate	SSE	8 s	3.4 ft S	13 mph E
Fri 30	4.8 ft	Moderate	SE	8 s	3.5 ft S	11 mph E
Sat 31	4.3 ft	Moderate	SE	8 s	3.2 ft SSE	13 mph ENE
Sun 1	4.2 ft	Moderate	ESE	7 s	2.4 ft SSE	14 mph ENE
Mon 2	3.9 ft	Slight	ESE	7 s	2.9 ft E	13 mph E
Tue 3	3.8 ft	Slight	ESE	6 s	2.8 ft ESE	12 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	3.2 ft	3.0 ft	2.8 ft	2.7 ft	2.7 ft	2.8 ft	3.0 ft	3.4 ft
Period	6.4 s	6.8 s	7.1 s	7.2 s	7.3 s	7.5 s	7.6 s	7.5 s
Direction	E	ESE	ESE	ESE	ESE	ESE	SE	SE
Swell	2.8 ft · 5 s	2.7 ft · 5 s	2.5 ft · 5 s	2.3 ft · 5 s	2.2 ft · 5 s	2.2 ft · 5 s	1.4 ft · 11 s	1.7 ft · 7 s
Wind (mph)	6 E	4 ESE	6 ESE	10 ESE	11 ESE	10 ESE	6 ESE	5 ESE

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	5.6 ft ENE	6 s	3.0 ft E
Mon 26	5.9 ft ENE	6 s	3.6 ft E
Sun 25	5.6 ft E	7 s	3.6 ft ESE
Sat 24	4.9 ft ESE	8 s	3.9 ft E
Fri 23	5.2 ft ESE	7 s	4.6 ft ESE
Thu 22	4.6 ft SE	7 s	3.6 ft ESE
Wed 21	4.3 ft ESE	7 s	3.3 ft E

Show all 14 days

Day	Max wave	Period	Swell
Tue 20	4.6 ft ESE	7 s	3.0 ft ESE
Mon 19	5.6 ft E	7 s	3.0 ft SE
Sun 18	5.9 ft ENE	7 s	3.0 ft ESE
Sat 17	4.6 ft ENE	6 s	3.0 ft ESE
Fri 16	4.3 ft E	6 s	2.6 ft E
Thu 15	4.3 ft E	6 s	3.0 ft E
Wed 14	3.9 ft E	6 s	3.0 ft ESE

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 RoteiroQuestions

How are the waves today in Roteiro?

Slight (3.3 ft with a period of 7.5 s from the southeast). The highest wave to expect is around 6.8 ft.

Which day will have the biggest waves this week?

Thursday 29, with waves up to 4.8 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 6.8 ft.

More about Roteiro today

Waves near Roteiro

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 16 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 8:28 pm (local time).

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