Hawaii Rainbow Forecast & Tracker

Rainybow uses your location and local weather forecasts to estimate when a rainbow may be visible. Check current conditions, likely viewing windows today, and daily outlooks for the next seven days in Hawaii or anywhere your browser can provide a location.

How the outlook works

Rainbows form when sunlight reaches water droplets with the sun behind you. Rainybow combines precipitation, cloud cover, humidity, and the sun’s position to estimate rainbow potential and show a direction to look. Scores are guidance, not a guarantee.

Weather forecast source

The app uses location-based forecasts from Open-Meteo . Local showers and changing sunlight can make rainbow conditions vary quickly.