All Countries
Weather & Climate in Llanrhian, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Llanrhian experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 44°F in January while summers reach 60°F in July / relatively mild seasonal variation. The area gets 225 sunny days per year, above the national average. Annual precipitation totals 56.3 inches (wetter than the 38-inch national average). The area receives 4.4 inches of snow annually. The city sits at an elevation of 184 feet.
Temperature
44°F Jan (7°C)
60°F Jul (15°C)
| Annual Average | 50.4°F |
| 7% below US avg | |
| January Average | 44°F (7°C) |
| July Average | 60°F (15°C) |
| Sunny Days | 225 days/yr |
Geography
| Elevation | 184 ft (56 m) |
| Area | 5.8 sq mi (15.0 km²) |
| Population Density | 154/sq mi |
| Coordinates | 51.9375°N, 5.1739°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
21 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Oct 25, 1999 | 10 km N of Hirwaun, United Kingdom | M4.5 | 113 km | 10 km |
| Feb 17, 2018 | 5 km NE of Clydach, United Kingdom | M4.3 | 94 km | 12 km |
| Feb 20, 2014 | 17 km NNW of Ilfracombe, United Kingdom | M4.1 | 95 km | 3 km |
| May 31, 2001 | 20 km NNW of Flexbury, United Kingdom | M4.0 | 110 km | 29 km |
| May 29, 2013 | 14 km WSW of Nefyn, United Kingdom | M3.8 | 110 km | 10 km |
| Jan 1, 1994 | Wales-England region, United Kingdom | M3.6 | 141 km | 10 km |
| Mar 17, 1994 | 5 km WNW of Newtown, United Kingdom | M3.5 | 140 km | 10 km |
| Oct 10, 2001 | 2 km SSE of Caerphilly, United Kingdom | M3.5 | 142 km | 10 km |
| Feb 12, 2002 | 1 km SSE of Deri, United Kingdom | M3.5 | 135 km | 8 km |
| Jul 29, 1992 | 8 km WNW of Caernarfon, United Kingdom | M3.5 | 146 km | 10 km |
| Feb 24, 2023 | 1 km ENE of Brynmawr, United Kingdom | M3.4 | 139 km | 10 km |
| Jun 20, 2002 | 3 km N of Marshfield, United Kingdom | M3.4 | 150 km | 14 km |
| Jun 16, 1991 | 11 km WSW of Knighton, United Kingdom | M3.3 | 140 km | 10 km |
| Jul 30, 1999 | 2 km ENE of Bargoed, United Kingdom | M3.3 | 138 km | 6 km |
| May 26, 2015 | 6 km WSW of Caernarfon, United Kingdom | M3.0 | 142 km | 9 km |
| Jan 28, 2002 | 1 km S of Abercarn, United Kingdom | M3.0 | 144 km | 10 km |
| Aug 17, 1992 | 1 km E of Machen, United Kingdom | M2.9 | 146 km | 10 km |
| Jun 26, 2013 | 14 km WSW of Nefyn, United Kingdom | M2.8 | 109 km | 8 km |
| May 31, 1998 | 38 km WNW of Northam, United Kingdom | M2.8 | 89 km | 15 km |
| Aug 17, 1994 | 0 km NNE of Machen, United Kingdom | M2.8 | 145 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (7°C) | 3.9 in | |
| February | 42°F (6°C) | 2.9 in | Coldest |
| March | 44°F (7°C) | 2.9 in | |
| April | 47°F (8°C) | 2.3 in | |
| May | 52°F (11°C) | 2.2 in | Driest |
| June | 56°F (13°C) | 2.4 in | |
| July | 60°F (15°C) | 2.3 in | |
| August | 60°F (16°C) | 3.1 in | Warmest |
| September | 57°F (14°C) | 3.1 in | |
| October | 53°F (11°C) | 4.2 in | |
| November | 48°F (9°C) | 4.4 in | Wettest |
| December | 45°F (7°C) | 4.1 in |
Llanrhian has a seasonal temperature swing of 18°F / from 42°F in February to 60°F in August. Total annual precipitation is 37.8 inches, with November being the wettest month (4.4") and May the driest (2.2").