About
Peakyas is a field atlas of the world's mountains, built entirely on open scientific data.
For each mountain you will find its real relief in 3D and in profile (Copernicus DEM), the long-term climate carried up to the summit and the altitude of the 0 °C line month by month (1991–2020), what each month was like from 2020 to 2025, and the huts, lifts, trails and glaciers around it.
Everything is an average or a count from a public dataset — never a forecast, and never an opinion. Sources and licences are listed on the data sources page.
Who publishes this site and how to reach us: Contact.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?
Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.
beaches
Find your beach: sea temperature, sun and swimming month by month.Visit 
lakes
Every lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit 
mountains
Every summit in 3D: summit weather, the 0 °C line, huts and trails.You are here
waterfalls
Every waterfall: height, flow month by month and when it roars.Coming soonVisit 
islands
Every island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit 
rivers
Every river from source to sea: the journey, the flow and the basin in numbers.Coming soonVisit canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit