Today's tides on your website, in one line
High and low water, sunrise and sunset, for any of NOAA's 3,499 tide prediction stations. No account, no key, no tracking, nothing to maintain.
Live, right now
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<script src="/v1/embed.js" data-station="8570283" defer></script>The widget renders into a shadow root, so its styles cannot leak into your page and your page's styles cannot break it. It adds one small request and no cookies.
Options
| data-station | Required. A NOAA station id, e.g. 8570283. Use the picker above. |
|---|---|
| data-units | english (feet, default) or metric (metres). |
| data-clock | 12 (default) or 24. |
| data-theme | auto (default), light or dark. |
| data-datum | MLLW by default, the chart datum NOAA publishes tide predictions against. |
| data-target | Optional CSS selector. Renders into that element instead of where the script tag sits. |
Why the times are right
A tide table an hour out is worse than no tide table, and the hour that goes missing is almost always daylight saving. Two things guard against it here.
The tide times are NOAA's own, on the station's own clock - nothing is converted, so nothing can be converted twice. The sunrise and sunset are computed from NOAA's published solar algorithm, and the UTC offset they use is derived from NOAA's own answers: the same day is requested twice, once local and once in GMT, and the difference between them is the offset NOAA applied. The sun and the tide are therefore on the same clock by construction, whatever that clock turns out to be.
That is not a theoretical worry. NOAA shifts its Guaymas, Mexico station onto US daylight saving even though Mexico abolished the practice in 2022, so a widget that looked the timezone up in a database would put every summer sunrise there an hour away from the tides beside it.
The data
Predictions come from NOAA CO-OPS. They are predictions, not observations: real water levels differ with wind and barometric pressure, and this is not a substitute for a chart or a forecast when it matters. US government works carry no copyright.