Beginner-first mountain weather guidance

Pick a JST window. Get the mountain that still makes sense.

`mountains` treats weather as a go / caution / no-go filter first, then layers editorial guidance on top. The homepage starts with the search form because that is the product, not a teaser.

48h

Forecast horizon

1-12h

Supported window size

Nearest presets on deck

JST / 48h horizon / beginner-first

Find the safest mountain window

Use JST local time. If your range is unsupported, the form will show the closest valid presets.

2026-03-26T23:00 - 2026-03-27T05:00

What To Expect

Practical guidance, not raw forecast overload.

Results stay conservative for beginners. A mountain only climbs the list if wind, precipitation, and apparent temperature stay within an acceptable band for the whole window.