Eryri National Park, Gwynedd, Wales
No more piecing together five different forecasts. RambleMetric combines weather, ground conditions, air quality, and transport into a single visit score — so you can plan the perfect trip to Cadair Idris.
About Cadair Idris
RambleMetric is a real-time conditions app for Cadair Idris, Eryri National Park, Gwynedd, Wales. Check live weather, ground state, trail conditions, and river levels before you visit.
Serious mountain terrain (893m) — full hillwalking equipment required. Summit cloud is common. Conditions can change rapidly — always check the forecast and plan accordingly.
Walking Routes
Check the live Visit Score before you set out — conditions here change fast.
Classic ascent via Llyn Cau — a dramatic glacial lake in a cliff-ringed cwm.
Flat estuary trail along a disused railway — stunning mountain and estuary views.
Plan Your Visit
Contains affiliate links — we earn a small commission at no cost to you.
Key Features
893m — legend says anyone who sleeps on the summit wakes either a poet or a madman.
Dramatic glacial lake in a cliff-ringed cwm on Cadair Idris's south face.
Beautiful tidal estuary with mountain views — Mawddach Trail follows the shore.
Live Data
All data is fetched from authoritative UK sources and recalculated every few minutes.
Safety Information
• Wear appropriate footwear with ankle support
• Carry waterproofs and extra layers — weather changes fast
• Keep to marked paths, especially in poor visibility
• Tell someone your route and expected return time
• Carry a map and compass (don't rely solely on phone GPS)
All data, scores, and recommendations provided by RambleMetric are for informational purposes only. Always use your own judgement and check official sources before visiting.
Ready to check conditions?
Free, no account needed, works on any device. Get your live score in seconds.