Free astronomy tool
Stargazing Weather Forecast
Find a clear hour to take your telescope outside. Choose your city to check clouds, rain, wind, and dark hours.
- Choose your city
- Check the dark hours
- Pick a clear window
Where will you observe?
City searches stay in your browser. Forecasts use approximate coordinates shared with MET Norway. Your device location is requested only when you choose “Use my location.”
A little planning. More time at the eyepiece.
Find your next clear window.
Start with your location above. We’ll check the weather after dark and help you decide whether to set up, watch for gaps, or leave the telescope inside.
- Hourly cloud cover
- Rain & wind checks
- Local night times
How to read the outlook
“Promising” means no forecast precipitation, at most 25% cloud, light wind below 4 m/s (14 km/h), humidity below 90%, and both ends of the hour after civil twilight. Strong gusts, fog, and supplied precipitation probabilities can lower the outlook. The clear window is the longest continuous run of promising hours in the selected night.
These are TelescopeBuddy planning rules, not a meteorological seeing forecast. Astronomical dark means the Sun is below −18°. Earlier dark hours can still suit the Moon and bright planets.
Check the real sky, too
Forecasts can miss local clouds, showers, and wind. Check local alerts and radar before heading out, and keep optics dry. Clear skies do not guarantee steady planetary views: atmospheric seeing, transparency, light pollution, and moonlight are not rated here.
Missing measurements appear as “—”. Your city’s timezone sets its forecast clock; device-location forecasts use your device timezone. No account or stored location is needed.
Weather data: MET Norway via Locationforecast · City data: GeoNames (simplified, coordinates rounded), both under CC BY 4.0.