marine.swell_forecast
mock data$0.001 / callMarine Swell Forecast
Hourly swell forecast at an ocean coordinate — swell wave height (m), swell direction (°), and swell period (s) for up to 16 days. Swell consists of wind-generated waves that have propagated far from their origin, typically with longer periods (>10s) and more regular patterns than wind-sea. High-period swell (>12s) is ideal for surfing; low-period swell (<6s) indicates local chop. Swell direction indicates where the swell is coming from (degrees clockwise from north). Useful for surf forecasting, sailing passage planning, and aquaculture site assessment. Source: Open-Meteo Marine API, CC BY 4.0, no authentication required.
Input schema
Latitude of the ocean location in decimal degrees (e.g. 51.5 for English Channel, 48.5 for Bay of Biscay). Must be over open water — land coordinates return null values.
Timezone for the returned time values (e.g. "UTC", "Europe/London", "America/New_York"). Defaults to UTC.
Longitude of the ocean location in decimal degrees (e.g. -14.0 for Atlantic, 2.3 for North Sea).
Number of days to forecast (1–16). Defaults to 7. Hourly data is returned for each day.
Call via REST
curl -X POST https://unifyapi.pro/api/call/marine.swell_forecast \
-H "Authorization: Bearer uak_live_..." \
-H "Content-Type: application/json" \
-d '{"latitude":0,"timezone":"<timezone>","longitude":0,"forecast_days":0}'