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US tide predictions in Duaer

In Duaer: High and low tide times and heights from NOAA for a US coastal station or the nearest station to a place. One successful search uses 1 credit.

What you get

Duaer US tide predictions returns NOAA high and low water predictions in metres above mean lower low water, in station local time. It covers US coasts and territories.

Pick Duaer Data → US tide predictions in the node creator, or open the data market. Related: Marine forecast, Sunrise and sunset.

When to use it

  • Plan a beach walk, launch, or survey around low tide.
  • List the tides for the next few days at a harbour.

When not to use it

  • Waves and swell. Use Marine forecast.
  • Coasts outside the US. NOAA has no stations there.

Search on the canvas

  1. Open the node creator and pick Duaer Data → US tide predictions.
  2. Fill Station (such as 9414290), Place (such as Seattle), or Latitude and Longitude. Optional: Start Date, Days.
  3. Limit defaults to 10, max 20. Execute.

A search uses 1 credit only when it returns rows. No rows, wrong input, or an upstream failure uses 0.

Call the API

  • GET https://api.duaer.com/v1/data/tides?place=Seattle&days=2
  • Authorization: Bearer <Duaer key>

The call skill below matches Copy skill in the Duaer data market, with parameters, examples, and result fields.

Call skill

Same text as Copy skill.

---
name: duaer-tides
description: >-
  Duaer US tide predictions. High and low tide times and heights from NOAA for a US coastal station or the nearest station to a place.
  One successful search uses 1 Duaer credit.
---

# Duaer US tide predictions

Duaer US tide predictions returns NOAA high and low water predictions in metres above mean lower low water, in station local time. It covers US coasts and territories.

## When to use

- Plan a beach walk, launch, or survey around low tide.
- List the tides for the next few days at a harbour.

## When not to use

- Waves and swell. Use https://skills.duaer.com/marine.md.
- Coasts outside the US. NOAA has no stations there.

## Call

`GET https://api.duaer.com/v1/data/tides?place=Seattle&days=2`

Header: `Authorization: Bearer <Duaer key>`

Use an account key or a model API key.

Get a Duaer key: https://skills.duaer.com/keys.md

## Parameters

Provide `station`, `place`, or `latitude` and `longitude`.

- `station` — Seven-digit NOAA station id, such as 9414290 (San Francisco).
- `place` — Place name, such as Seattle. Duaer uses the nearest station.
- `latitude`, `longitude` — Optional. Coordinates instead of a place name.
- `date` — Optional. Start date, YYYY-MM-DD. Default today.
- `days` — Optional. 1 to 7. Default 2.
- `limit` — Optional. Rows to return, from 1 to 20. Default 10.

## Examples

- `GET https://api.duaer.com/v1/data/tides?place=Seattle&days=2` — two days of tides in Seattle.
- `GET https://api.duaer.com/v1/data/tides?station=9414290&date=2026-10-01` — San Francisco tides from October 1.

## Result

The response is `{ "items": [...] }`. Each item has `source`, `title`, `url`, and `summary`, plus:

- `stationId`, `station`, `state` — the station used.
- `time`, `tide`, `heightM` — local time, high or low, and height in metres.

A place with no US station nearby returns no rows.

Fields without a value are left out.

## Credits

A search that returns at least one row uses 1 credit.
An empty search, a search that finds nothing, or a failed search uses 0.
Wrong input returns 400 with a message and uses 0.
No remaining credits returns 402 and does not search.
A missing key returns 401.

## Related

- https://skills.duaer.com/marine.md — Duaer Marine forecast
- https://skills.duaer.com/sunrise.md — Duaer Sunrise and sunset

Questions

How many credits does a US tide predictions search use in Duaer?

One credit when Duaer returns rows. A search with no rows or an error uses 0.

Where does Duaer US tide predictions work?

Duaer US tide predictions covers US coasts and territories only. With no NOAA station nearby, it returns no rows at 0 credits.

In this section

Get started

Marine forecast in Duaer

In Duaer: Daily wave height, swell height, wave period, and direction for a coast or a point at sea, up to eight days, from Open-Meteo marine models. One successful search uses 1 credit.

Get started

Sunrise and sunset in Duaer

In Duaer: Sunrise, sunset, solar noon, civil twilight, and day length for a place and up to seven consecutive days. One successful search uses 1 credit.