Moelwyn Mawr weather forecast & routes (770 m)

Routes up

Moelwyn Mawr routes: 4 ways to the top

From Croesor by the north-west ridgeHiking · 3.7 km one way · 620 m ascent · ~1h 45m · from Croesor village car parkModerate
Climb the grassy north-west ridge from the village to the summit trig pillar. Steady ascent on a clear path.
Start 157 m3.7 km to the top
Start grid ref SH 631 446 · Driving directions · By bus or train
Near the start
- Oriel Caffi Croesor0.1 km
- Public toilets0.0 km
From OpenStreetMap, within 2 km. Check opening times before you rely on them.
Download the From Croesor by the north-west ridge GPXFull From Croesor by the north-west ridge route guide
From Tanygrisiau via CraigysgafnHiking · 4.4 km one way · 570 m ascent · ~1h 50m · from Cwmorthin car park, TanygrisiauModerate
Climb past the slate workings to the Stwlan dam, then follow the rocky Craigysgafn ridge north to the summit.
Start 258 m4.4 km to the top
Start grid ref SH 683 454 · Driving directions · By bus or train
Near the start
From OpenStreetMap, within 2 km. Check opening times before you rely on them.
Download the From Tanygrisiau via Craigysgafn GPXFull From Tanygrisiau via Craigysgafn route guide
Cwmorthin and Rhosydd from TanygrisiauHiking · 4.8 km one way · 540 m ascent · ~1h 50m · from Cwmorthin car park, TanygrisiauHard
A hard mountain walk to the summit from Cwmorthin car park, Tanygrisiau.
Start 258 m4.8 km to the top
Start grid ref SH 683 454 · Driving directions · By bus or train
Near the start
From OpenStreetMap, within 2 km. Check opening times before you rely on them.
Download the Cwmorthin and Rhosydd from Tanygrisiau GPXFull Cwmorthin and Rhosydd from Tanygrisiau route guide
Croesor via Moelwyn Bach and CraigysgafnHiking · 5.7 km one way · 730 m ascent · ~2h 20m · from Croesor public pathHard
A hard mountain walk to the summit from Croesor public path.
Start 174 m5.7 km to the top
Start grid ref SH 629 447 · Driving directions · By bus or train
Near the start
- Oriel Caffi Croesor0.3 km
- Public toilets0.2 km
From OpenStreetMap, within 2 km. Check opening times before you rely on them.
Download the Croesor via Moelwyn Bach and Craigysgafn GPXFull Croesor via Moelwyn Bach and Craigysgafn route guide

Summit today

Is it safe to climb Moelwyn Mawr today?

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Cloud inversion · 7 days

The chance of standing above a sea of cloud on Moelwyn Mawr each morning this week, from overnight temperature, humidity and low cloud below the 770m summit.

Dark sky · 7 days

How dark the sky gets over Moelwyn Mawr each night this week, from cloud cover, moonlight and local light pollution.

Snow · 7 days

Snowfall and lying snow at the summit over the next 7 days.

Sun today

Sunrise 07:06, sunset 16:53

9h 47m of daylight. Golden hour ends 07:56 and starts 16:02. From the summit you see the sun 07:00 to 16:58.

Nearby summits

Close to Moelwyn Mawr

About Moelwyn Mawr

Moelwyn Mawr is the highest of the Moelwynion, the hills between the Vale of Ffestiniog and Croesor. The narrow rocky ridge of Craigysgafn links it to Moelwyn Bach, 1.1 km south, and Cnicht lies 2.2 km north-west. Disused slate quarries and their tramways cover the eastern side, around Rhosydd and Croesor.

From Croesor a path climbs the long north-west ridge to the summit trig pillar. From Tanygrisiau you can walk up past the Stwlan dam and along Craigysgafn, which is rocky but not exposed. Both routes give a good round when you add Moelwyn Bach.

The summit looks out over Tremadog Bay and the Glaslyn estuary to the west.

Moelwyn Mawr is 770 m (2,526 ft) high with 385 m of prominence. It is in Snowdonia, Wales. It is the 44th highest of the 152 summits Peakify lists in Snowdonia. The nearest summits are Moelwyn Mawr North Ridge Top (0.5 km), Craigysgafn (0.6 km) and Moelwyn Bach (1.1 km).

Can you climb Moelwyn Mawr and Moelwyn Bach together?

Yes. Moelwyn Bach is 1.1 km south, linked by the Craigysgafn ridge.

Where do you start Moelwyn Mawr?

Croesor on the west side and Tanygrisiau on the east side are the usual starting points.

Can you climb Moelwyn Mawr and Cnicht together?

Cnicht is 2.2 km north-west, and walkers often join them by crossing the old quarry ground around Rhosydd.

How high is Moelwyn Mawr?

Moelwyn Mawr is 770 metres high with 385 metres of prominence.

Where is Moelwyn Mawr?

Moelwyn Mawr is listed in Snowdonia, Wales.

Are there routes for Moelwyn Mawr?

Peakify lists 4 routes for Moelwyn Mawr, including available distance, ascent, start point, and difficulty details. The easiest is From Croesor by the north-west ridge (3.7 km one way, Moderate).

Is it safe to climb Moelwyn Mawr 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 Moelwyn Mawr?

The page includes cached mountain forecast context, snow outlook, dark-sky signals, cloud-inversion information, sunrise, sunset, and summit planning details where available.

More in Snowdonia

Peakify is run by Sam Tyler, who has climbed Yr Wyddfa 22 times. The forecast refreshes every hour; how our forecast works.