Moelwyn Mawr
About Moelwyn Mawr
Moelwyn Mawr is the highest of the Moelwyn group of mountains between Blaenau Ffestiniog and Porthmadog. The summit gives wonderful views across the bay towards the Llŷn Peninsula.
Height & Prominence of Moelwyn Mawr
Moelwyn Mawr stands at 770 metres (2527 feet) above sea level, according to Ordnance Survey data. Its topographic prominence is 590 metres, meaning it rises at least that far above the col connecting it to the nearest higher peak. Moelwyn Mawr is part of the Moelwyn Mountains. The OS grid reference is SH 658449, which you can use to locate the summit on any Ordnance Survey Explorer or Landranger map.
Moelwyn Mawr carries the classifications of Hewitt, Nuttall, Marilyn.
Location & Nearest Towns
Moelwyn Mawr is located in Wales, Gwynedd, within Snowdonia National Park. It sits in the Moelwynion area. The nearest towns and villages include Blaenau Ffestiniog, Porthmadog, Croesor, where you can find accommodation, pubs, and supplies before or after your walk.
For official access information and any seasonal restrictions, check the Snowdonia National Park authority.
Interesting Facts
- Highest of the Moelwyn group
- Superb views over the Glaslyn estuary
- Crossed by the Ffestiniog Railway corridor below
Safety Tips
Always check forecasts before setting out. Summit conditions differ dramatically from valley level.
Carry map, compass/GPS, water, food, first aid, whistle, torch, and waterproofs.
Tell someone your route and return time. Stick to marked paths. Be ready to turn back.
Ask for Police, then Mountain Rescue. Know your grid reference.
On the Mountain: Walking Moelwyn Mawr
Moelwyn Mawr is a moderate walk that rewards careful planning. The summit sits at 770m, where conditions can feel distinctly different from the valley — wind speeds are typically 30–50% stronger above 800m, and the temperature drops roughly 1°C for every 100m of ascent. In cloud, the cairn at the top can be hard to spot, so keep a map and compass to hand even on well-marked paths.
After your walk, the nearest village — Blaenau Ffestiniog — is a good place for a pint and a debrief. For detailed route descriptions and trip reports from other walkers, Walkhighlands is an excellent resource.
Nearby Dining
- Blaenau Ffestiniog cafes
- Glaslyn Fish and Chips
Frequently Asked Questions
Is Moelwyn Mawr one of the best mountains to climb in the UK?
Yes, Moelwyn Mawr is considered one of the best mountains to climb in the UK thanks to its scenic routes, 770m elevation, and moderate difficulty level.
What difficulty level is Moelwyn Mawr?
Moelwyn Mawr has a difficulty rating of Moderate. Various routes are available for different experience levels.
When is the best time to climb Moelwyn Mawr?
The best season is Spring to Autumn. Summit temperatures are typically 5–10°C colder than the valley, and conditions can change rapidly.
Why Visit Moelwyn Mawr?
Moelwyn Mawr stands at 770m (2527ft) in Wales, Gwynedd. Classified as a Hewitt and Nuttall and Marilyn, it is a rewarding destination for hikers, climbers, and photographers.
Browse our UK mountains directory to discover more peaks, or see all mountains A–Z.
Nearby Peaks to Explore
Looking beyond Moelwyn Mawr? These peaks are close by and worth exploring.
