TidePlanet

Waves in Upper Grand Lagoon

Hourly wave forecast for 7 days · updated today, Wednesday, October 28, at 11:44 pm (CDT)
Now · significant height 1.1 ft
Sea state
Smooth · Douglas 2
Period
2.8 s · NE
Swell
0.3 ft · 4 s
Highest expected
2.5 ft

Today the sea at Upper Grand Lagoon is smooth: 1.1 ft waves with a period of 2.8 s from the northeast. The swell, 0.3 ft at 4 s, comes from the west. Biggest waves: Sunday 1, with waves up to 2.4 ft (slight).

Wave height, next 7 days

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 common0.6 ft
  • Significant1.1 ft
  • Highest expected2.5 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 2.5 ft. Before heading out, expect waves of up to 2.5 ft.

The Douglas sea state scale

DegreeNameWave 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 1.4 ft Smooth ENE 3 s 0.5 ft SE 13 mph NE
Thu 29 1.4 ft Smooth NE 3 s 0.5 ft SE 11 mph NE
Fri 30 1.2 ft Smooth E 4 s 0.7 ft SE 11 mph NE
Sat 31 1.3 ft Smooth SE 5 s 1.2 ft SE 13 mph E
Sun 1 2.4 ft Slight SE 5 s 1.9 ft SE 14 mph ENE
Mon 2 1.8 ft Slight ESE 4 s 1.4 ft SE 13 mph ENE
Tue 3 1.9 ft Slight SE 5 s 1.4 ft SE 13 mph E

Today, every 3 hours

Time 12:00 am3:00 am6:00 am9:00 am12:00 pm3:00 pm6:00 pm9:00 pm
Waves 1.0 ft1.2 ft1.2 ft1.3 ft1.4 ft1.3 ft1.2 ft1.2 ft
Period 3.1 s3.0 s3.0 s3.1 s3.1 s3.1 s3.1 s2.9 s
Direction EENEENEENEENEENENENE
Swell 0.3 ft · 5 s0.4 ft · 4 s0.4 ft · 4 s0.4 ft · 3 s0.4 ft · 5 s0.4 ft · 4 s0.4 ft · 2 s0.3 ft · 5 s
Wind (mph) 5 NNE5 NNE7 NE9 NE11 NNE10 NE6 NNE8 NNE

Previous days

The waves over the last 14 days. Tap a day to see it hour by hour.

DayMax wavePeriodSwell
Tue 27 1.0 ft E5 s0.7 ft SE
Mon 26 2.0 ft NE3 s0.3 ft ESE
Sun 25 3.0 ft NE4 s0.3 ft ESE
Sat 24 1.6 ft E4 s1.0 ft SE
Fri 23 1.3 ft SSE6 s0.7 ft S
Thu 22 1.0 ft S6 s0.7 ft S
Wed 21 1.0 ft SSE6 s0.7 ft S
Show all 14 days
DayMax wavePeriodSwell
Tue 20 1.6 ft ESE5 s0.7 ft S
Mon 19 2.3 ft ENE4 s0.7 ft SSE
Sun 18 2.6 ft ENE5 s1.0 ft S
Sat 17 3.9 ft N5 s1.0 ft WSW
Fri 16 2.3 ft S5 s1.6 ft SSE
Thu 15 1.6 ft SSE6 s1.6 ft SSE
Wed 14 0.3 ft S6 s0.3 ft S

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 Upper Grand LagoonQuestions

How are the waves today in Upper Grand Lagoon?

Smooth (1.1 ft with a period of 2.8 s from the northeast). The highest wave to expect is around 2.5 ft.

Which day will have the biggest waves this week?

Sunday 1, with waves up to 2.4 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 2.5 ft.

More about Upper Grand Lagoon today

Waves near Upper Grand Lagoon

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 4.0 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 11:44 pm (local time).

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