TidePlanet

Waves in San José

Hourly wave forecast for 7 days · updated today, Thursday, October 29, at 12:46 am (CET)
Now · significant height 1.1 ft
Sea state
Smooth · Douglas 2
Period
2.8 s · SE
Swell
0.6 ft · 3 s
Highest expected
2.4 ft

Today the sea at San José is smooth: 1.1 ft waves with a period of 2.8 s from the southeast. The swell, 0.6 ft at 3 s, comes from the east-southeast. Biggest waves: Wednesday 4, with waves up to 4.3 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 common0.6 ft
  • Significant1.1 ft
  • Highest expected2.4 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 2.4 ft. Before heading out, expect waves of up to 2.4 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 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 1.2 ft Smooth ESE 4 s 0.8 ft ESE 11 mph ENE
Fri 30 1.2 ft Smooth ESE 4 s 0.8 ft ESE 8 mph ENE
Sat 31 1.4 ft Smooth E 3 s 1.0 ft ESE 13 mph ENE
Sun 1 2.2 ft Slight E 4 s 1.4 ft E 8 mph ENE
Mon 2 1.1 ft Smooth E 6 s 1.0 ft E 11 mph WNW
Tue 3 2.9 ft Slight ENE 6 s 0.7 ft ENE 18 mph NE
Wed 4 4.3 ft Moderate ENE 5 s 2.4 ft E 25 mph NE

Today, every 3 hours

Time 12:00 am3:00 am6:00 am9:00 am12:00 pm3:00 pm6:00 pm9:00 pm
Waves 1.1 ft1.1 ft1.0 ft1.1 ft1.1 ft1.2 ft1.1 ft1.0 ft
Period 2.9 s2.9 s3.0 s3.0 s3.1 s3.1 s3.4 s3.7 s
Direction SEEEESEESEESEESEESE
Swell 0.5 ft · 3 s0.7 ft · 3 s0.7 ft · 3 s0.7 ft · 3 s0.7 ft · 3 s0.6 ft · 3 s0.7 ft · 3 s0.7 ft · 3 s
Wind (mph) 9 NE7 NE5 NNE6 NE10 ENE11 E8 E6 ENE

Previous days

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

DayMax wavePeriodSwell
Wed 28 1.3 ft SSW4 s1.0 ft SW
Tue 27 1.3 ft S5 s1.0 ft S
Mon 26 1.0 ft SSW5 s0.7 ft SW
Sun 25 1.3 ft SW5 s0.7 ft SSW
Sat 24 1.3 ft SW5 s1.3 ft SW
Fri 23 1.6 ft SW4 s1.6 ft SW
Thu 22 2.3 ft SW5 s2.3 ft SW
Show all 14 days
DayMax wavePeriodSwell
Wed 21 4.3 ft SW6 s3.3 ft SW
Tue 20 4.9 ft SW6 s2.0 ft SSW
Mon 19 2.3 ft E7 s2.0 ft E
Sun 18 2.0 ft E4 s1.0 ft ESE
Sat 17 1.3 ft E4 s1.0 ft E
Fri 16 3.0 ft E5 s2.0 ft E
Thu 15 3.3 ft E5 s2.3 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 San JoséQuestions

How are the waves today in San José?

Smooth (1.1 ft with a period of 2.8 s from the southeast). The highest wave to expect is around 2.4 ft.

Which day will have the biggest waves this week?

Wednesday 4, with waves up to 4.3 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 2.4 ft.

More about San José today

Waves near San José

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 2.3 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 12:46 am (local time).

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