Compare all 15 summits over 3,000 feet in Eryri before committing to this long and serious mountain challenge.
Every summit is shown side by side. The combined grade gives extra weight to the weakest forecast.
A grey, cloudy day on Snowdon - Yr Wyddfa: summit wind broadly 15-30 mph, with gusts 35-45 mph early in the morning (strong winds).
A grey, cloudy day on Crib y Ddysgl: summit wind broadly 15-30 mph, with gusts 35-45 mph early in the morning (strong winds).
A grey, cloudy day on Crib Goch: summit wind broadly 15-30 mph, with gusts 35-45 mph early in the morning (strong winds).
A grey, cloudy day on Elidir Fawr: summit wind broadly 15-30 mph, with gusts 35-45 mph early in the morning (strong winds).
A grey, cloudy day on Y Garn: summit wind broadly 15-30 mph, with gusts 35-45 mph early in the morning (strong winds).
A grey, cloudy day on Glyder Fawr: summit wind broadly 15-30 mph, with gusts 35-45 mph early in the morning (strong winds).
A grey, cloudy day on Glyder Fach: summit wind broadly 15-30 mph, with gusts 35-45 mph early in the morning (strong winds).
A grey, cloudy day on Tryfan: summit wind broadly 10-30 mph, with gusts 35-45 mph early in the morning (strong winds).
A grey, cloudy day on Pen yr Ole Wen: summit wind broadly 10-30 mph, with gusts 35-45 mph early in the morning (strong winds).
A grey, cloudy day on Carnedd Dafydd: summit wind broadly 15-30 mph, with gusts 35-45 mph early in the morning (strong winds).
A grey, cloudy day on Carnedd Llewelyn: summit wind broadly 15-30 mph, with gusts 30-40 mph early in the morning (strong winds).
A grey, cloudy day on Yr Elen: summit wind broadly 10-30 mph, with gusts 35-45 mph early in the morning (strong winds).
A grey, cloudy day on Foel Grach: summit wind broadly 10-30 mph, with gusts 35-45 mph early in the morning (strong winds).
A grey, cloudy day on Garnedd Uchaf: summit wind broadly 10-30 mph, with gusts 30-40 mph early in the morning (strong winds).
A grey, cloudy day on Foel-fras: summit wind broadly 10-30 mph, with gusts 30-40 mph early in the morning (strong winds).
Weather data: Open-Meteo (CC BY 4.0). Adapted by Mountain Weather.
The Welsh 3000s crosses the Yr Wyddfa, Glyderau and Carneddau ranges, taking in 15 summits above 3,000 feet. Its length, exposed scrambling and repeated high ground make a single valley forecast inadequate for choosing a day.
The combined grade is deliberately conservative and gives extra weight to the weakest summit. Review every row, especially Crib Goch and Tryfan, and use the full peak pages for timing and hazard detail.
Read BMC Welsh 3000s guide