Waves in Greenfield

Hourly wave forecast for 7 days · updated today, Wednesday, October 28, at 11:54 pm (GMT)

Now · significant height 1.6 ft

Sea state: Smooth · Douglas 2
Period: 4.0 s · WNW
Swell: 1.5 ft · 3 s
Highest expected: 3.3 ft

Today the sea at Greenfield is smooth: 1.6 ft waves with a period of 4.0 s from the west-northwest. The swell, 1.5 ft at 3 s, comes from the west-northwest.

Wave height, next 7 days

1.02.03.04.0 ft 3.7 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 common0.8 ft
Significant1.6 ft
Highest expected3.3 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 3.3 ft. Before heading out, expect waves of up to 3.3 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 · today	0.3 ft–1.6 ft
3	Slight · week peak	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	3.7 ft	Slight	W	5 s	3.2 ft WNW	18 mph WSW
Thu 29	1.6 ft	Smooth	W	4 s	1.5 ft WNW	10 mph SSE
Fri 30	0.9 ft	Smooth	SSE	2 s	0.3 ft SSE	11 mph SSE
Sat 31	0.9 ft	Smooth	SE	4 s	0.3 ft ESE	8 mph SSE
Sun 1	0.6 ft	Smooth	NW	7 s	0.5 ft NW	4 mph WSW
Mon 2	0.7 ft	Smooth	N	3 s	0.5 ft N	5 mph NNE
Tue 3	0.5 ft	Smooth	NNE	3 s	0.4 ft NNE	2 mph NNW

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	3.7 ft	3.3 ft	3.6 ft	3.7 ft	3.2 ft	2.8 ft	2.3 ft	1.8 ft
Period	5.1 s	4.8 s	4.5 s	4.7 s	4.6 s	4.5 s	4.4 s	4.2 s
Direction	W	W	W	W	W	W	WNW	WNW
Swell	3.2 ft · 5 s	2.6 ft · 5 s	1.7 ft · 4 s	1.6 ft · 5 s	2.1 ft · 5 s	2.5 ft · 4 s	2.2 ft · 4 s	1.8 ft · 4 s
Wind (mph)	11 SW	14 SW	18 SW	13 WSW	15 W	10 WSW	4 SW	4 SSW

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	4.9 ft WSW	5 s	3.6 ft WNW
Mon 26	6.9 ft WSW	6 s	4.9 ft WNW
Sun 25	14 ft WNW	8 s	4.3 ft NW
Sat 24	10 ft WNW	7 s	5.2 ft NW
Fri 23	8.9 ft NNW	7 s	1.3 ft N
Thu 22	4.6 ft WNW	6 s	4.3 ft WNW
Wed 21	6.9 ft W	9 s	4.9 ft WNW

Show all 14 days

Day	Max wave	Period	Swell
Tue 20	0.3 ft N	8 s	0.3 ft NNW
Mon 19	1.6 ft NNE	4 s	1.3 ft N
Sun 18	1.3 ft NNE	3 s	0.7 ft N
Sat 17	3.3 ft NW	5 s	3.0 ft NW
Fri 16	3.6 ft NW	5 s	2.6 ft WNW
Thu 15	3.0 ft WSW	4 s	1.6 ft W
Wed 14	3.3 ft W	5 s	3.0 ft WNW

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 GreenfieldQuestions

How are the waves today in Greenfield?

Smooth (1.6 ft with a period of 4.0 s from the west-northwest). The highest wave to expect is around 3.3 ft.

Which day will have the biggest waves this week?

Wednesday 28, with waves up to 3.7 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 3.3 ft.

More about Greenfield today

Waves near Greenfield

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 12 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 11:54 pm (local time).

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