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Marine Wave Forecast — Wave Height, Period and Direction

Try for free

Hourly marine conditions for any coastal coordinate as flat rows — wave height, period and direction. Free public API, no key.

Pricing

from $1.00 / 1,000 results

Rating

0.0

(0)

Developer

alaudin burki

Actor stats

Bookmarked

Total users

Monthly active users

5 days ago

Last modified

What you get

latitude, longitude, time, waveHeightM, waveDirectionDeg, wavePeriodS.

The source returns parallel arrays (one per variable), so the coordinates are copied from the response root onto every row.

Sample output

{ "latitude": 25.04, "longitude": -80.04, "time": "2026-10-18T00:00",
  "waveHeightM": 0.34, "waveDirectionDeg": 67, "wavePeriodS": 5.4 }

Limitations

A modelled forecast on a coarse grid, not a buoy reading. The nearest sea point can be several kilometres away and the grid does not resolve a harbour entrance.
Wave height is combined sea and swell, not swell alone, so it reads higher in a wind sea than a surfer's swell forecast would.
waveDirectionDeg is the direction the waves come from, in degrees, as the API defines it.
One coordinate per run. Inland coordinates return no sea data.

Pricing

Pay per result.

Fields

Field	Type	What it holds
`latitude`	number	Latitude in decimal degrees (WGS 84). A STRING from some sources and a number from others — check the README per Actor.
`longitude`	number	Longitude in decimal degrees (WGS 84). A STRING from some sources and a number from others — check the README per Actor.
`time`	string	Time this row refers to.
`waveHeightM`	string	Significant wave height in METRES. 'Significant' is a specific statistical definition (roughly the mean of the highest third of waves), not the tallest wave.
`waveDirectionDeg`	string	Direction the waves travel FROM, in degrees.
`wavePeriodS`	string	Wave period in SECONDS. Longer periods generally mean more energetic swell.

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