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Merthyr Mawr, United Kingdom

Full City Profile

3.4 /5.0
B Good
279 Population 84/sq mi density
39 ft Elevation 12 meters
52°F Avg Temperature 11°C
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.2 / 5.0
$49,093 median income, 4.8% unemployment
B+
Affordability
3.6 / 5.0
$264,598 home value, $1,249/mo rent
B
Education
3.4 / 5.0
30.0% bachelor's degree or higher
Merthyr Mawr experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 41°F in January while summers reach 60°F in July. The area gets 224 sunny days per year. Annual precipitation totals 69.6 inches. The area receives 6.0 inches of snow annually.

Temperature

41°F Jan (5°C) 60°F Jul (15°C)
Annual Average51.8°F
4% below US avg
January Average41°F (5°C)
July Average60°F (15°C)
Sunny Days224 days/yr

Geography

Elevation39 ft (12 m)
Area3.3 sq mi (8.6 km²)
Population Density84/sq mi
Coordinates51.4861°N, 3.6086°W
TimezoneEurope/London

Precipitation & Snow

Annual Rainfall 69.6"
83% above US avg
Snowfall 6.0"
Wettest Month (Nov) 5.30"
Driest Month (Apr) 2.70"

Air Quality

Earthquake History

32 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.7. Most recent: M3.4 on Feb 24, 2023.

Apr 2, 1990 4 km NNE of Presteigne, United Kingdom M4.7 102 km
Oct 25, 1999 10 km N of Hirwaun, United Kingdom M4.5 39 km
Feb 17, 2018 5 km NE of Clydach, United Kingdom M4.3 31 km
Feb 20, 2014 17 km NNW of Ilfracombe, United Kingdom M4.1 41 km
May 31, 2001 20 km NNW of Flexbury, United Kingdom M4.0 93 km
May 12, 1994 4 km S of Shipston on Stour, United Kingdom M3.7 149 km
Jan 29, 2004 2 km E of North Petherton, United Kingdom M3.7 62 km
Jan 29, 2004 2 km E of North Petherton, United Kingdom M3.6 62 km
Jan 1, 1994 Wales-England region, United Kingdom M3.6 25 km
Mar 17, 1994 5 km WNW of Newtown, United Kingdom M3.5 118 km
Oct 10, 2001 2 km SSE of Caerphilly, United Kingdom M3.5 29 km
Feb 12, 2002 1 km SSE of Deri, United Kingdom M3.5 34 km
Feb 24, 2023 1 km ENE of Brynmawr, United Kingdom M3.4 47 km
Jun 20, 2002 3 km N of Marshfield, United Kingdom M3.4 38 km
Jun 16, 1991 11 km WSW of Knighton, United Kingdom M3.3 96 km
Sep 23, 1992 1 km NNE of Tiverton, United Kingdom M3.3 64 km
Jul 30, 1999 2 km ENE of Bargoed, United Kingdom M3.3 36 km
Jan 29, 2004 2 km E of North Petherton, United Kingdom M3.3 62 km
Oct 16, 1997 4 km ENE of Torquay, United Kingdom M3.2 112 km
Sep 17, 1993 3 km S of Leominster, United Kingdom M3.2 99 km
Source: USGS (M2.5+, 1990–2025)

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 0.4 m (1 ft).

Year Location Cause Max Wave Deaths Distance
2011 PLYMOUTH, ENGLAND Avalanche 0.4 m — 118 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 41°F (5°C) 5.0 in
February 40°F (4°C) 3.6 in Coldest
March 43°F (6°C) 3.8 in
April 46°F (8°C) 2.7 in Driest
May 52°F (11°C) 2.7 in
June 57°F (14°C) 2.9 in
July 60°F (15°C) 2.9 in
August 60°F (16°C) 3.7 in Warmest
September 56°F (14°C) 4.2 in
October 51°F (11°C) 4.7 in
November 45°F (7°C) 5.3 in Wettest
December 42°F (6°C) 5.1 in

Merthyr Mawr has a seasonal temperature swing of 21°F / from 40°F in February to 60°F in August. Total annual precipitation is 46.6 inches, with November being the wettest month (5.3") and April the driest (2.7").

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