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Museum · near Blaenau Ffestiniog · Gwynedd

Llechwedd Slate Caverns

You will find Llechwedd Slate Caverns, a museum, 300 m north of Blaenau Ffestiniog. Look also at Castell Dolwyddelan, 5.7 km away, first of 15 more within 15 km.

Where
300 m
north of Blaenau Ffestiniog
Warmest months
Jul–Aug
highs of 18–18°C
In brief

Museum near Blaenau Ffestiniog

Just outside Blaenau Ffestiniog

Llechwedd Slate Caverns is 300 m north of Blaenau Ffestiniog. Towns near it ↓

Written from OpenStreetMap, Wikidata, the ONS built-up areas and Met Office 1991–2020 averages.

When to go

Which month to go

July and August bring the warmest afternoons to Blaenau Ffestiniog, at 18°C.

Jan6° / 1°284 mm
Feb7° / 2°178 mm
Mar9° / 3°167 mm
Apr12° / 4°125 mm
May14° / 7°139 mm
Jun17° / 9°146 mm
Jul18° / 11°166 mm
Aug18° / 11°187 mm
Sep16° / 10°193 mm
Oct13° / 7°237 mm
Nov10° / 5°245 mm
Dec7° / 2°268 mm
Green months are the warmest. Typical afternoon highs and night lows in Blaenau Ffestiniog, and rain in a month. Met Office HadUK-Grid 1991–2020 averages for Blaenau Ffestiniog. Opening times change through the year: check before you go. Blaenau Ffestiniog’s full climate →
About

Llechwedd Slate Caverns

Museum.

Type
Museum
Town
300 m north of Blaenau Ffestiniog
Facts: Wikidata (CC0) and OpenStreetMap (© OpenStreetMap contributors).
Plan your visit

Hours, entry and address

Entrance fees
  • EntryA fee is charged
Hours and entry: OpenStreetMap contributors. They change through the year: check its site before you go.
The map

Finding Llechwedd Slate Caverns

Llechwedd Slate Caverns sits at the orange dot; the numbered ones are listed below.

12345678

© OpenStreetMap contributors · ONS built-up area 2022

Towns near it

Which towns are near Llechwedd Slate Caverns

Pick a base: each town is a page of its own, with what else there is to see.

12
  1. 1Blaenau Ffestiniog
  2. 2Llan Ffestiniog
1 · 300 m south of it

Blaenau Ffestiniog

3,449 people · 3 places to visit

2 · 4.7 km south of it

Llan Ffestiniog

903 people · 3 places to visit

Compare the 2 towns
TownWhere Llechwedd Slate Caverns isPeoplePlaces to visit
Blaenau Ffestiniog300 m south of it3,4493
Llan Ffestiniog4.7 km south of it9033
Make a day of it

Around Llechwedd Slate Caverns

Of the 15 within 15 km, look for 2 castles, 2 heritage railways and 2 museums.

Within 15 km, close and well known first. Numbers match the map.

Planning a visit to Llechwedd Slate Caverns

Where is Llechwedd Slate Caverns?

Llechwedd Slate Caverns is 300 m north of Blaenau Ffestiniog, Gwynedd.

What is Llechwedd Slate Caverns?

Museum.

When is the best time to visit Llechwedd Slate Caverns?

July and August are the warmest months in Blaenau Ffestiniog, with afternoon highs of 18–18°C (Met Office 1991–2020 averages).

What else is there to see near Llechwedd Slate Caverns?

Within 15 km: Castell Dolwyddelan (5.7 km), Dinas Emrys (9.5 km), Welsh Highland Railway (14 km) and Plas Brondanw (9.6 km).

Places: OpenStreetMap (© OpenStreetMap contributors, Open Database Licence) and Wikidata (CC0), placed in the ONS 2022 built-up area (Open Government Licence v3.0). Visitor counts are the latest Wikidata gives, with their year.

Photos: each place’s Wikidata image, from Wikimedia Commons under the licence below (our copy, resized).

Photo credits (3)

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.