Tides API
Tide predictions for the entire US coastline, straight from NOAA. A searchable directory of all 3,499 NOAA CO-OPS tide prediction stations (1,256 harmonic reference stations + subordinates) across every US coastal state and territory, with nearest-station lookup by coordinates (lat/lng → the Santa Monica Municipal Pier station, 0.9 km away). Predictions are fetched live from NOAA's official CO-OPS engine and edge-cached, so they are always exactly what NOAA publishes: high/low tide times and heights (interval=hilo) for any date up to 7 days per call, or continuous hourly/6-minute series on reference stations, in feet or meters, against your choice of datum (MLLW default, MSL, NAVD...), in local station time. Subordinate stations are correctly limited to high/low mode with a pointer to their reference station. Bonus: latest observed water temperature from stations with sensors (75.2°F at The Battery right now). Surf and fishing apps, sailing tools, coastal photography planners, beach-safety products — the same data WorldTides and Tide-Forecast sell, from the primary source. US + territories only (NOAA's coverage).
{
"ok": true,
"station": {
"id": "8518750",
"name": "NEW YORK (The Battery)",
"state": "NY",
"lat": 40.70055,
"lng": -74.01417,
"type": "reference",
"reference_id": null,
"tz_offset": -5
},
"date": "2026-09-13",
"days": 2,
"interval": "hilo",
"units": "feet",
"datum": "MLLW",
"timezone": "local station time (lst_ldt)",
"predictions": [
{
"time": "2026-09-13 04:23",
"height": -0.096,
"type": "low"
},
{
"time": "2026-09-13 10:25",
"height": 5.652,
"type": "high"
},
{
"time": "2026-09-13 16:46",
"height": 0.206,
"type": "low"
},
{
"time": "2026-09-13 22:41",
"height": 5.115,
"type": "high"
},
{
"time": "2026-09-14 05:01",
"height": 0.201,
"type": "low"
},
{
"time": "2026-09-14 11:09",
"height": 5.474,
"type": "high"
},
{
"time": "2026-09-14 17:29",
"height": 0.462,
"type": "low"
},
{
"time": "2026-09-14 23:28",
"height": 4.756,
"type": "high"
}
]
}Why developers pick this API
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