TidePlanet

Waves in San Carlos

Hourly wave forecast for 7 days · updated today, Wednesday, October 28, at 7:59 pm (EST)
Now · significant height 0.9 ft
Sea state
Smooth · Douglas 2
Period
4.5 s · NE
Swell
0.5 ft · 5 s
Highest expected
1.8 ft

Today the sea at San Carlos is smooth: 0.9 ft waves with a period of 4.5 s from the northeast. The swell, 0.5 ft at 5 s, comes from the east. Biggest waves: Tuesday 3, with waves up to 1.0 ft (smooth).

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 common0.4 ft
  • Significant0.9 ft
  • Highest expected1.8 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 1.8 ft. Before heading out, expect waves of up to 1.8 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 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 0.9 ft Smooth ESE 7 s 0.7 ft SE 8 mph N
Thu 29 0.9 ft Smooth NE 6 s 0.7 ft E 8 mph NNE
Fri 30 0.9 ft Smooth NNE 7 s 0.6 ft SE 4 mph NE
Sat 31 0.8 ft Smooth WSW 9 s 0.5 ft SSW 4 mph E
Sun 1 0.6 ft Smooth SSW 11 s 0.4 ft S 6 mph W
Mon 2 0.6 ft Smooth S 11 s 0.4 ft S 8 mph W
Tue 3 1.0 ft Smooth S 7 s 0.9 ft S 9 mph WSW

Today, every 3 hours

Time 12:00 am3:00 am6:00 am9:00 am12:00 pm3:00 pm6:00 pm9:00 pm
Waves 0.7 ft0.8 ft0.7 ft0.7 ft0.7 ft0.7 ft0.8 ft0.9 ft
Period 6.3 s6.7 s7.2 s7.4 s7.0 s6.2 s4.9 s4.6 s
Direction SEESESESESEESEENENE
Swell 0.5 ft · 8 s0.6 ft · 9 s0.5 ft · 9 s0.5 ft · 9 s0.5 ft · 8 s0.5 ft · 7 s0.5 ft · 7 s0.6 ft · 4 s
Wind (mph) 4 NNW3 NNW5 NNW2 ESE3 ESE5 NNE8 N6 N

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 S8 s0.7 ft S
Mon 26 1.0 ft SSW8 s0.7 ft S
Sun 25 1.3 ft SSW12 s1.0 ft S
Sat 24 1.0 ft S12 s1.0 ft S
Fri 23 1.0 ft S12 s0.7 ft S
Thu 22 1.0 ft S12 s0.7 ft S
Wed 21 1.0 ft S12 s0.7 ft S
Show all 14 days
DayMax wavePeriodSwell
Tue 20 1.0 ft S11 s1.0 ft S
Mon 19 1.3 ft S11 s1.0 ft S
Sun 18 1.3 ft S12 s1.3 ft S
Sat 17 2.0 ft S12 s1.3 ft S
Fri 16 1.0 ft S12 s1.0 ft S
Thu 15 1.0 ft S12 s0.7 ft S
Wed 14 1.3 ft S10 s1.0 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 San CarlosQuestions

How are the waves today in San Carlos?

Smooth (0.9 ft with a period of 4.5 s from the northeast). The highest wave to expect is around 1.8 ft.

Which day will have the biggest waves this week?

Tuesday 3, with waves up to 1.0 ft (smooth).

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 1.8 ft.

More about San Carlos today

Waves near San Carlos

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 6.8 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 7:59 pm (local time).

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