Microproduct Data GuideBeginner

Open-Meteo Marine Forecast

Hourly offshore marine forecasts from Open-Meteo for coastal planning context under the free API's noncommercial use limit.

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At a Glance

Difficulty
Beginner — comfortable for a first prototype
Size
Tiny · ≤0.01 GB
Formats
JSON
Access
API
API Key
Not Required
Provider
Open-Meteo
Updates
Continuous
Last Verified
Sep 28, 2026
Source Type
Company Source
Data Terms
Free API is for noncommercial use only, with CC BY 4.0 attribution and rate limits.
Setup Friction
Low Setup Friction
Setup Time
5 min
Registration
Not Required
Rate Limits
Free noncommercial API permits fewer than 10000 calls per day.
  • Python Syntax Checked
  • Runnable Notebook

From Source to Product Signal

Test a Product Idea in Four Steps

Start with one offshore point and one forecast day. The free Open-Meteo marine endpoint permits noncommercial use only; commercial services need separate paid access. Query a reviewed offshore point; a returned model cell is not beach, navigation, or ferry safety advice.

1

Check the Setup

  • Python 3.10 or newer
  • An internet connection
  • The requests Python package
2

Access the Data

  1. 1.Read the free API noncommercial terms and marine model limitations.
  2. 2.Choose a suitable offshore point and request one day of wave forecasts.
  3. 3.Check that the returned grid cell and wave values apply to that point.
Open Official Source
3

Run the Python Example

Install the packages, then run the notebook cell.

python -m pip install requests

import requests

response = requests.get(
    "https://marine-api.open-meteo.com/v1/marine",
    params={"latitude": 53.208336, "longitude": -9.2916565,
            "hourly": "wave_height", "forecast_days": 1},
    timeout=30,
)
response.raise_for_status()
hourly = response.json()["hourly"]
print(list(zip(hourly["time"], hourly["wave_height"]))[:5])
4

Test a Useful Signal

Inspect One Offshore Wave Forecast

Assess one wave-height series as noncommercial coastal context.

  1. 01Verify the returned point is offshore and inspect missing wave values.
  2. 02Record the time, unit, and model source for each displayed value.
  3. 03Explain the noncommercial API limit and why forecasts are not marine safety advice.

Related Datasets

Dataset Details

Open-Meteo is a company source. Last verified 2026-09-28. Temporal coverage: current hourly forecasts.

Formats

JSON

Provider

Open-Meteo

Data Terms

Free API is for noncommercial use only, with CC BY 4.0 attribution and rate limits.

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