Routes up
Foel Cwm-Sian Llwyd routes: 2 ways to the top
Cwm Hirnant by the Bwlch Hirnant trackHiking · 7.3 km one way · 470 m ascent · ~2h 15m · from Cwm Hirnant public track at SH952299Hard
Cwm Hirnant by the forest tracksHiking · 7.1 km one way · 440 m ascent · ~2h 10m · from Cwm Hirnant public track at SH949308Hard
Summit today
Is it safe to climb Foel Cwm-Sian Llwyd today?
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Cloud inversion · 7 days
The chance of standing above a sea of cloud on Foel Cwm-Sian Llwyd each morning this week, from overnight temperature, humidity and low cloud below the 648m summit.
Dark sky · 7 days
How dark the sky gets over Foel Cwm-Sian Llwyd each night this week, from cloud cover, moonlight and local light pollution.
Snow · 7 days
No snow is forecast at the summit in the next 7 days.
Sun today
Sunrise 07:03, sunset 16:51
9h 48m of daylight. Golden hour ends 07:54 and starts 16:00. From the summit you see the sun 06:58 to 16:56.
Nearby summits
Close to Foel Cwm-Sian Llwyd
About Foel Cwm-Sian Llwyd
Foel Cwm-Sian Llwyd is 648 m (2,126 ft) high with 58 m of prominence. It is in Bala to Welshpool, Wales. OS grid reference SH995313. It is the 5th highest of the 42 summits Peakify lists in Bala to Welshpool. The nearest summits are Y Groes Fagl (2.5 km), Cyrniau Nod (3.5 km) and Foel Cedig (3.4 km).
How high is Foel Cwm-Sian Llwyd?
Foel Cwm-Sian Llwyd is 648 metres high with 58 metres of prominence.
Where is Foel Cwm-Sian Llwyd?
Foel Cwm-Sian Llwyd is listed in Bala to Welshpool, Wales.
Are there routes for Foel Cwm-Sian Llwyd?
Peakify lists 2 routes for Foel Cwm-Sian Llwyd, including available distance, ascent, start point, and difficulty details. The easiest is Cwm Hirnant by the Bwlch Hirnant track (7.3 km one way, Hard).
Is it safe to climb Foel Cwm-Sian Llwyd today?
Peakify rates each day on the summit Good, Marginal or Poor from the forecast summit wind, gusts, chance of rain and wind chill. Wind of 40 mph or gusts of 65 mph make it Poor; wind of 25 mph, gusts of 45 mph, a 60% chance of rain or a feels-like temperature of -8°C or below make it Marginal. Today's and tomorrow's ratings are at the top of this page. The rating covers the weather only: also check your route, daylight, kit and experience, and in winter whether you need an ice axe and crampons.
What weather information is shown for Foel Cwm-Sian Llwyd?
The page includes cached mountain forecast context, snow outlook, dark-sky signals, cloud-inversion information, sunrise, sunset, and summit planning details where available.
Peakify is run by Sam Tyler, who has climbed Yr Wyddfa 22 times. The forecast refreshes every hour; how our forecast works.
