Mountain ConditionsThis section displays the weather forecast for Tanygrisiau, which is located to the south and is one of the nearest towns to Moelwyn Mawr. Remember that Tanygrisiau sits at 200m above sea level, whereas the summit of Moelwyn Mawr reaches 770m. This means that when looking at temperature the adiabatic lapse rate must be taken into account, which in Wales is a drop in temperature of between 0.5 and 1°C per 100m in altitude. Exposure and wind speed can also significantly lower temperatures.
When to Climb and Essential GearMoelwyn Mawr can be climbed at anytime of the year, however in poor conditions the mountain may be best avoided. April to September offer the most reliable conditions and one will need all the equipment one usually carries for a day in the mountains, which in Wales means full waterproofs and sturdy boots as a minimum.
Getting ThereMoelwyn Mawr is located in the southern Moelwynion, between the valleys of Cwm Croesor in the west and the Vale of Ffestiniog in the east. The mountain can be approached from either of these valleys, both giving an interesting walk in.
Cwm Croesor may only be reached from the south. If you’re coming from the east therefore, leave the A487 in Penrhyndeudraeth (SH 611 389) and take the A4085 north in the direction of Beddgelert (SH 590 481). Just after the village of Garreg (SH 612 416), there is a right hand turn (SH 614 420), which is signposted for the village of Croesor (SH 630 447). The village is reached after around 3km. Park in the small National Park run car park in the village.
If you’d rather start your walk from the Vale of Ffestiniog, the most convenient starting point is the small car park just above the village of Tanygrisiau. To reach it, leave the A470 at the roundabout in Blaenau Ffestiniog (SH 697 460) and take the A496 in a southerly direction over the railway line. Continue along the A496 for a kilometre or so to a small junction on the right hand side (SH 688 448). Take this junction and then turn left immediately, following the signs for the Ffestiniog Power Station; 500 metres down the road there’s a café on the left hand side; it’s a great place to start and end a day in the hills. Pass the café and follow the curving road up the hill to the car park at the top of Tanygrisiau (SH 683 453).
Red Tape and AccessNo red tape here!
For climbers, hill walkers and mountaineers, the British Mountaineering Council (BMC) runs a Regional Access Database, which holds mountain/crag specific information on matters of conservation and access, including issues such as nesting restrictions, nature designations and preferred parking.
If you are in any doubt about any particular access arrangement, or need to report an incident, you should contact your local BMC Access Representative or the BMC Access Officers for Wales: Elfyn Jones.
Camping and AccommodationThere’s an almost unlimited supply of accommodation within the Snowdonia National Park so it would be inappropriate to list it all here. For budget accommodation it’s worth checking out some of the following sites:
Snowdonia National Park Authority
Council for National Parks
Association of National Park Authorities
Conwy County Council
Gwynedd County Council
Powys County Council
Countryside Council for Wales
Forestry Commission Wales
Royal Commission on Ancient & Historical Monuments in Wales
Gwynedd Archaeological Trust
The National Trust
Hiking, Climbing and Mountaineering Organisations and Companies
British Mountaineering Council
The Climbers Club
Plas y Brenin National Mountain Centre
Mountain Weather Wales
Weather from the Met Office
Weather Channel UK
North Wales Tourism Partnership
Local Information from Gwynedd.com
Local Information from Snowdonia Wales Net
North Wales Index
Welsh Public Transport Information
Uk Train Timetable
Youth Hostel Association in Wales
North Wales Campsites
Maps and Guidebooks
Harvey Map Services
Climbers Club Guidebooks
North Wales Bouldering
Mid Wales Climbing
Cordee Travel and Adventure Sports Bookshop
Wildlife and Conservation
Joint Nature Conservation Committee
North Wales Wildlife Trust
Royal Society for the Protection of Birds
Welsh Language Board
Cymdeithas yr Iaith Gymraeg Welsh language pressure group
Yr Urdd (Welsh Youth Association)
Welsh-English / English-Welsh online translator
Welsh-English / English-Welsh Online Dictionary
Welsh-English / English-Welsh Online Lexicon
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