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Weather & Climate in Llansteffan, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Llansteffan experiences four distinct seasons with an average annual temperature of 51°F (10°C). Winters average 42°F in January while summers reach 61°F in July / relatively mild seasonal variation. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 41.8 inches. The city sits at an elevation of 105 feet.
Temperature
42°F Jan (6°C)
61°F Jul (16°C)
| Annual Average | 50.7°F |
| 6% below US avg | |
| January Average | 42°F (6°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 105 ft (32 m) |
| Area | 8.1 sq mi (20.9 km²) |
| Population Density | 53/sq mi |
| Coordinates | 51.7722°N, 4.3914°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
30 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Apr 2, 1990 | 4 km NNE of Presteigne, United Kingdom | M4.7 | 114 km | 18 km |
| Oct 25, 1999 | 10 km N of Hirwaun, United Kingdom | M4.5 | 59 km | 10 km |
| Feb 17, 2018 | 5 km NE of Clydach, United Kingdom | M4.3 | 37 km | 12 km |
| Feb 20, 2014 | 17 km NNW of Ilfracombe, United Kingdom | M4.1 | 48 km | 3 km |
| May 31, 2001 | 20 km NNW of Flexbury, United Kingdom | M4.0 | 89 km | 29 km |
| May 29, 2013 | 14 km WSW of Nefyn, United Kingdom | M3.8 | 126 km | 10 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.7 | 124 km | 7 km |
| Jan 1, 1994 | Wales-England region, United Kingdom | M3.6 | 86 km | 10 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.6 | 124 km | 7 km |
| Mar 17, 1994 | 5 km WNW of Newtown, United Kingdom | M3.5 | 110 km | 10 km |
| Feb 12, 2002 | 1 km SSE of Deri, United Kingdom | M3.5 | 79 km | 8 km |
| Oct 10, 2001 | 2 km SSE of Caerphilly, United Kingdom | M3.5 | 85 km | 10 km |
| Jun 20, 2002 | 3 km N of Marshfield, United Kingdom | M3.4 | 93 km | 14 km |
| Feb 24, 2023 | 1 km ENE of Brynmawr, United Kingdom | M3.4 | 85 km | 10 km |
| Sep 23, 1992 | 1 km NNE of Tiverton, United Kingdom | M3.3 | 114 km | 10 km |
| Jun 16, 1991 | 11 km WSW of Knighton, United Kingdom | M3.3 | 101 km | 10 km |
| Jul 30, 1999 | 2 km ENE of Bargoed, United Kingdom | M3.3 | 83 km | 6 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.3 | 124 km | 7 km |
| Sep 17, 1993 | 3 km S of Leominster, United Kingdom | M3.2 | 122 km | 10 km |
| May 26, 2015 | 6 km WSW of Caernarfon, United Kingdom | M3.0 | 149 km | 9 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 4.3 in | |
| February | 42°F (5°C) | 3.1 in | Coldest |
| March | 44°F (7°C) | 3.3 in | |
| April | 47°F (8°C) | 2.5 in | |
| May | 53°F (11°C) | 2.4 in | Driest |
| June | 57°F (14°C) | 2.8 in | |
| July | 61°F (16°C) | 2.7 in | Warmest |
| August | 61°F (16°C) | 3.4 in | |
| September | 57°F (14°C) | 3.6 in | |
| October | 53°F (12°C) | 4.5 in | |
| November | 47°F (8°C) | 4.8 in | Wettest |
| December | 44°F (7°C) | 4.5 in |
Llansteffan has a seasonal temperature swing of 19°F / from 42°F in February to 61°F in July. Total annual precipitation is 41.8 inches, with November being the wettest month (4.8") and May the driest (2.4").