TidePlanet

Waves in Guia

Hourly wave forecast for 7 days · updated today, Wednesday, October 28, at 10:50 pm (WET)
Now · significant height 4.7 ft
Sea state
Moderate · Douglas 4
Period
11.6 s · NNW
Swell
4.2 ft · 11 s
Highest expected
9.2 ft

Today the sea at Guia is moderate: 4.7 ft waves with a period of 11.6 s from the north-northwest. The swell, 4.2 ft at 11 s, comes from the north-northwest. Biggest waves: Thursday 29, with waves up to 4.7 ft (moderate).

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 common2.3 ft
  • Significant4.7 ft
  • Highest expected9.2 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 9.2 ft. Before heading out, expect waves of up to 9.2 ft.

The Douglas sea state scale

DegreeNameWave 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 4.7 ft Moderate NNW 12 s 4.2 ft NNW 6 mph NNE
Thu 29 4.7 ft Moderate NNW 12 s 4.3 ft NNW 7 mph NW
Fri 30 3.8 ft Slight N 11 s 3.5 ft NNW 5 mph ENE
Sat 31 3.1 ft Slight NNW 12 s 2.4 ft NNW 4 mph WSW
Sun 1 4.1 ft Moderate NNW 12 s 3.9 ft NNW 6 mph SSE
Mon 2 3.9 ft Slight NNW 11 s 3.7 ft NNW 21 mph E
Tue 3 3.0 ft Slight N 10 s 2.7 ft NNW 19 mph ENE

Today, every 3 hours

Time 12:00 am3:00 am6:00 am9:00 am12:00 pm3:00 pm6:00 pm9:00 pm
Waves 4.1 ft3.5 ft3.5 ft3.6 ft3.8 ft4.1 ft4.3 ft4.6 ft
Period 11.4 s10.5 s10.4 s10.6 s10.9 s11.2 s11.5 s11.6 s
Direction NNNNNNWNNWNNWNNW
Swell 3.0 ft · 11 s2.5 ft · 10 s2.3 ft · 10 s2.5 ft · 10 s2.7 ft · 10 s3.1 ft · 10 s3.4 ft · 11 s4.0 ft · 11 s
Wind (mph) 3 ENE4 ENE5 ENE4 NE3 NNW4 NW3 NW2 NE

Previous days

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

DayMax wavePeriodSwell
Tue 27 3.9 ft N11 s3.0 ft N
Mon 26 6.2 ft NNE9 s4.9 ft NNE
Sun 25 6.9 ft NNE9 s4.3 ft N
Sat 24 6.9 ft NNE9 s4.9 ft N
Fri 23 4.9 ft N11 s4.6 ft NNW
Thu 22 4.6 ft N11 s3.9 ft NNE
Wed 21 5.6 ft NNE10 s4.3 ft N
Show all 14 days
DayMax wavePeriodSwell
Tue 20 5.9 ft N11 s5.6 ft N
Mon 19 5.9 ft N10 s5.9 ft N
Sun 18 5.2 ft N8 s3.9 ft N
Sat 17 4.6 ft NNW11 s3.3 ft NNW
Fri 16 4.6 ft NNW11 s3.6 ft NNW
Thu 15 3.9 ft N11 s3.3 ft NNW
Wed 14 5.6 ft NNE7 s3.9 ft NNE

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 GuiaQuestions

How are the waves today in Guia?

Moderate (4.7 ft with a period of 11.6 s from the north-northwest). The highest wave to expect is around 9.2 ft.

Which day will have the biggest waves this week?

Thursday 29, with waves up to 4.7 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 9.2 ft.

More about Guia today

Waves near Guia

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 6.6 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 10:50 pm (local time).

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