Mountain

Cefn Merthyr

Located in Merthyr Vale, Merthyr Tydfil Coordinates: 51°41′56″ N 3°19′46″ W

Location in United Kingdom

Elevation: 377 m; above sea level
Nearest town: Aberfan; 1.4 km SW
Local time: UTC+00:00; Europe/London · UTC+00:00
When to go: June–August; See the climate
Airports: CWL Cardiff International Airport34 km; BRS Bristol Airport55 km

About Cefn Merthyr

Cefn Merthyr is a mountain. Location: Merthyr Vale, Merthyr Tydfil. Elevation: 377 m. The best months to visit are June–August. The nearest airport is Cardiff International Airport (34 km). Nearby sights include Mynydd Cilfach-yr-encil and Coed yr Hendre.

Climate of Cefn Merthyr

Best months for sightseeing

Best months for sightseeing: June–August.

This month · November

A wet month

Day 9° · Night 3° · Rain 155 mm

Hottest month: July (day 19°)
Coldest month: February (night 0°)
Wettest month: December (161 mm)
Driest month: July (76 mm)

5° 1°

5° 0°

8° 2°

10° 3°

14° 6°

17° 8°

19° 11°

16° 9°

12° 6°

9° 3°

6° 2°

Jan

160

Feb

114

Mar

121

Apr

May

Jun

Jul

Aug

105

Sep

121

Oct

137

Nov

155

Dec

161

Bars: average monthly low and high temperature. Below: precipitation. Monthly averages for 1970–2000 at about 18 km resolution, adjusted for elevation. Highlighted months are mild and relatively dry. Source: WorldClim 2.1 (CC BY 4.0).

Show values as a table

Climate of Cefn Merthyr
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average high (°C)	5°	5°	8°	10°	14°	17°	19°	19°	16°	12°	9°	6°
Average low (°C)	1°	0°	2°	3°	6°	8°	11°	11°	9°	6°	3°	2°
Precipitation (mm)	160	114	121	87	85	86	76	105	121	137	155	161

Other places to visit in this season: June July August

How to get to Cefn Merthyr

The nearest airport is Cardiff International Airport (CWL), 34 km to the south as the crow flies. The nearest large city is Newport, 26 km to the southeast.

Airports

Cardiff International Airport (CWL) Cardiff 34 kmsouth
Bristol Airport (BRS) Bristol 55 kmsoutheast
Exeter International Airport (EXT) Exeter, Devon 107 kmsouth

Nearby large cities

Newport Population: 161.5K 26 kmsoutheast
Cardiff Population: 372.1K 26 kmsoutheast
Swansea Population: 300.4K 43 kmwest
Bristol Population: 479K 58 kmsoutheast
Bath Population: 101.6K 76 kmsoutheast

Straight-line distances; road distances are longer. Airport data: OurAirports.

Day trips from Cefn Merthyr

Within 100 km: 934 historic and cultural sites, 2,148 natural sites, 158 lakes, rivers and coasts.

0–25 km226 places

Lisvane Reservoir Lake 22 kmSE
Llandegfedd Reservoir Lake 25 kmE
Talybont Reservoir Lake 18 kmN
Pen y Fan Mountain 22 kmN

25–60 km1,123 places

Kilve Beach Beach 57 kmS
Steep Holm Island 43 kmS
Flat Holm Island 38 kmS
Barry Island Island 34 kmS

60–100 km1,891 places

Saunton Sands Beach 91 kmSW
Putsborough Beach Beach 87 kmSW
Tresaith Beach Beach 95 kmNW
Llangrannog's Beach Beach 94 kmNW

Straight-line distances.

Nearest towns and villages

Aberfan Village, Merthyr Vale
1.4 km SW
Bedlinog Village, Bedlinog
1.3 km NE
Treharris Town, Treharris
4.1 km S
Abercanaid Town, Troed-y-Rhiw
3.7 km NW
Mountain Ash Town, Mountain Ash
3.9 km SW
Merthyr Vale Village, Merthyr Vale
1.4 km S

Cefn Merthyr

Nearby attractions & nature

Everything nearby

Mynydd Cilfach-yr-encil Mountain, Troed-y-Rhiw
2.5 km N
Coed yr Hendre Mountain, Bedlinog
2.5 km NE
Twyn Brynbychan Mountain, Merthyr Vale
2.7 km SW
Pen Garnbugail Mountain, Bedlinog
3.3 km NE
Craig y Felin Mountain, Darran Valley
4.4 km E
Goitre Coed Mountain, Treharris
4.4 km S
Cefn y Brithdir Mountain, Darran Valley
5.2 km NE
Pen-twyn Mountain, Ynysybwl and Coed-y-Cwm
5.3 km SW

Cefn Merthyr

Sources & licences

GeoNames, CC-BY-4.0 GeoNames (www.geonames.org), CC BY 4.0

Data last updated: November 3, 2026