Weather along your GPX route

• The track becomes a point every 250 metres, each with its distance, elevation, the gradient under it and the compass bearing you'll be riding on.
• The climb is counted from the original track, lightly smoothed, so the headline metres agree with your head unit.
• Your arrival time at each point comes from your usual average speed, slowed on the climbs and by a headwind, quicker downhill and with the wind behind you.
• At each point, the forecast is read at that arrival time: wind, rain, temperature, and whether it's light.

Any route planner that exports GPX, TCX or FIT works: export the file and open it in Velvind. A Ride with GPS link can be pasted in, and routes you've saved in Strava come over when you connect (how that works). In the web planner you can also draw a route on the map.

The route opens on Now: the ride if you leave this minute. Choose another start and the whole ride re-reads at once, with nothing new to download. ⚡ marks the kindest start over the next nine days (how it's chosen). Add the ride, and Velvind checks its forecast every 15 minutes and tells you once if it turns.

• Wind forecast for your bike route Head, cross and tailwind for each stretch, at the minute you're there.
• How it works The whole reading, from the route to the verdict, checked against the code.