VeloMétéo - Weather & Wind for Cyclists by Bloodyhenry

Hour-by-hour weather forecast and relative wind calculation along your cycling routes (GPX files, Komoot and Strava compatible).

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About this extension

🚴 VeloMétéo predicts and projects weather conditions (relative wind, gusts, rain, and temperature) along your cycling routes based on your target pace and departure time.

Say goodbye to unexpected 40 km/h headwinds on your ride back: instantly see where and when you will face headwinds or enjoy a tailwind!

💨 Vector Wind Analysis: Automatic calculation of relative wind angle based on your compass bearing at every kilometer (headwind 🔴, crosswind 🟡, tailwind 🟢).
🗺 Direct Komoot & Strava Integration: Whenever you open a route page, interactive weather checkpoints and a draggable summary widget appear right on the map.
⏱ Physics-Based Pace Modeling: Realistic speed calculation weighted by gradient (penalized uphill, capped gain downhill) normalized to your target average speed to accurately time your passage at each checkpoint.
🌦 Accurate Weather Data (Open-Meteo): Mean wind speed, max gusts, precipitation probability & accumulation, actual temperature, and "feels-like" temperature.
📁 Universal GPX Import: Drag and drop any GPX file to plan bikepacking, gravel, or road cycling adventures.
🔒 100% Client-Side & Privacy by Design: Zero third-party backend servers, zero account required, zero tracking or analytics. All calculations run locally in your browser.

Simply open a route page on Komoot or Strava: the weather checkpoints and summary widget will automatically overlay on the map.
Adjust your departure date/time, target average speed, or checkpoint spacing directly from the floating panel.
You can also click the extension icon in your browser toolbar to open the standalone web UI and drop any GPX file.

Weather Forecasts: Powered by the open-source API Open-Meteo.com under the CC BY 4.0 license.
Cartography: Map tiles and data © OpenStreetMap contributors under the ODbL license.
Non-Affiliation: VeloMétéo is an independent open-source project. It is not affiliated with, sponsored by, or endorsed by Komoot GmbH or Strava, Inc.
Safety: Weather forecasts and wind estimates are provided for planning purposes only. Always check official meteorological warnings before riding.

Free and open-source software distributed under the MIT License. Source code available on GitHub.

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Permissions and data

Required permissions:

Access browser tabs
Access your data for sites in the komoot.com domain
Access your data for sites in the komoot.de domain
Access your data for sites in the komoot.fr domain
Access your data for sites in the komoot.it domain
Access your data for sites in the komoot.es domain
Access your data for sites in the komoot.nl domain
Access your data for sites in the strava.com domain

Optional permissions:

Access your data for sites in the komoot.com domain
Access your data for sites in the komoot.de domain
Access your data for sites in the komoot.fr domain
Access your data for sites in the komoot.it domain
Access your data for sites in the komoot.es domain
Access your data for sites in the komoot.nl domain
Access your data for sites in the strava.com domain
Access your data for sites in the tile.openstreetmap.org domain
Access your data for api.open-meteo.com

Data collection:

The developer says this extension doesn't require data collection.