Waves in Sinnamary

Hourly wave forecast for 7 days · updated today, Wednesday, October 28, at 8:43 pm (GMT-3)

Now · significant height 3.4 ft

Sea state: Slight · Douglas 3
Period: 8.5 s · NNE
Swell: 2.4 ft · 10 s
Highest expected: 6.8 ft

Today the sea at Sinnamary is slight: 3.4 ft waves with a period of 8.5 s from the north-northeast. The swell, 2.4 ft at 10 s, comes from the north. Biggest waves: Thursday 29, with waves up to 3.5 ft (slight).

Wave height, next 7 days

1.02.03.0 ft 3.5 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
Significant3.4 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	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	3.4 ft	Slight	N	10 s	2.5 ft NNW	9 mph E
Thu 29	3.5 ft	Slight	NNE	8 s	2.4 ft N	9 mph E
Fri 30	3.5 ft	Slight	NE	7 s	2.3 ft N	9 mph E
Sat 31	3.0 ft	Slight	NE	8 s	1.9 ft N	10 mph E
Sun 1	3.1 ft	Slight	NE	7 s	1.8 ft NNE	9 mph E
Mon 2	3.3 ft	Slight	NE	7 s	1.9 ft N	8 mph ESE
Tue 3	3.4 ft	Slight	ENE	7 s	2.2 ft NNE	9 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	2.9 ft	2.9 ft	3.0 ft	3.0 ft	3.0 ft	3.0 ft	3.1 ft	3.4 ft
Period	10.2 s	10.2 s	10.2 s	10.0 s	9.8 s	10.1 s	9.3 s	8.5 s
Direction	N	N	N	N	N	N	NNE	NNE
Swell	2.4 ft · 9 s	2.2 ft · 10 s	2.2 ft · 9 s	2.3 ft · 9 s	2.5 ft · 9 s	2.5 ft · 10 s	2.4 ft · 10 s	2.4 ft · 10 s
Wind (mph)	3 E	4 ESE	2 SSE	6 E	9 E	4 E	6 ENE	5 ENE

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	3.0 ft NNE	10 s	2.3 ft NNW
Mon 26	3.0 ft NNE	9 s	2.0 ft NNW
Sun 25	3.0 ft NNE	8 s	2.0 ft N
Sat 24	2.3 ft NNE	9 s	1.6 ft N
Fri 23	2.6 ft NNE	8 s	2.0 ft N
Thu 22	3.0 ft NNE	8 s	2.0 ft N
Wed 21	3.9 ft NE	8 s	2.3 ft N

Show all 14 days

Day	Max wave	Period	Swell
Tue 20	3.9 ft NE	8 s	2.3 ft N
Mon 19	3.3 ft NNE	10 s	2.3 ft N
Sun 18	3.0 ft NNE	11 s	2.6 ft N
Sat 17	3.0 ft NNE	11 s	2.3 ft N
Fri 16	3.0 ft NE	8 s	2.3 ft NNE
Thu 15	3.3 ft NE	7 s	2.0 ft NE
Wed 14	4.3 ft ENE	6 s	3.0 ft ENE

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 SinnamaryQuestions

How are the waves today in Sinnamary?

Slight (3.4 ft with a period of 8.5 s from the north-northeast). 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 3.5 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 6.8 ft.

More about Sinnamary today

Waves near Sinnamary

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 11 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 8:43 pm (local time).

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