Weather & Climate in Radlett, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Radlett experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 41°F in January while summers reach 63°F in July. Annual precipitation totals 33.6 inches. The area receives 2.7 inches of snow annually. The city sits at an elevation of 243 feet.
Temperature
41°F Jan (5°C)
63°F Jul (17°C)
| Annual Average | 53.0°F |
| 2% below US avg | |
| January Average | 41°F (5°C) |
| July Average | 63°F (17°C) |
Geography
| Elevation | 243 ft (74 m) |
| Area | 49.5 sq mi (128.1 km²) |
| Population Density | 165/sq mi |
| Coordinates | 51.6859°N, 0.3187°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
32 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Apr 28, 2007 | 1 km WNW of Lympne, United Kingdom | M4.6 | 114 km | 10 km |
| Feb 15, 1994 | 7 km ESE of Thetford, United Kingdom | M4.4 | 111 km | 10 km |
| Oct 28, 2001 | 5 km E of Long Clawson, United Kingdom | M4.2 | 134 km | 12 km |
| Sep 23, 2000 | 1 km WSW of Warwick, United Kingdom | M4.0 | 110 km | 13 km |
| Sep 15, 1994 | 38 km NE of Broadstairs, United Kingdom | M3.9 | 145 km | 10 km |
| Jan 28, 2015 | 2 km WSW of Market Overton, United Kingdom | M3.8 | 119 km | 3 km |
| May 12, 1994 | 4 km S of Shipston on Stour, United Kingdom | M3.7 | 97 km | 10 km |
| May 22, 2015 | 3 km SSE of Ramsgate, United Kingdom | M3.7 | 129 km | 12 km |
| Mar 3, 2009 | 1 km ENE of Hawkinge, United Kingdom | M3.5 | 122 km | 4 km |
| Apr 18, 2014 | 3 km WSW of Market Overton, United Kingdom | M3.5 | 119 km | 2 km |
| Feb 17, 1992 | 1 km W of Warboys, United Kingdom | M3.4 | 81 km | 10 km |
| Sep 9, 1995 | 0 km WNW of East Wittering, United Kingdom | M3.3 | 109 km | 10 km |
| Feb 27, 2019 | 3 km SE of Dorking, United Kingdom | M3.3 | 53 km | 10 km |
| Feb 21, 2022 | 5 km N of Hockley, United Kingdom | M3.2 | 146 km | 10 km |
| Nov 5, 1994 | 5 km N of Debenham, United Kingdom | M3.0 | 122 km | 5 km |
| Mar 18, 2001 | 8 km W of Marlborough, United Kingdom | M2.9 | 109 km | 10 km |
| Jan 1, 1995 | 2 km ESE of Halesworth, United Kingdom | M2.9 | 147 km | 10 km |
| Feb 15, 1994 | 4 km NNE of Banham, United Kingdom | M2.9 | 130 km | 10 km |
| Jul 16, 2005 | 3 km WSW of Southwater, United Kingdom | M2.9 | 76 km | 5 km |
| Jan 18, 2013 | 0 km NE of Hathern, United Kingdom | M2.9 | 139 km | 13 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 0.9 m (3 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1911 | FOLKSTONE, ENGLAND | Meteorological | 0.9 m | - | 126 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 2.6 in | |
| February | 39°F (4°C) | 1.7 in | Coldest |
| March | 43°F (6°C) | 2.0 in | |
| April | 46°F (8°C) | 1.9 in | |
| May | 53°F (11°C) | 1.9 in | |
| June | 58°F (14°C) | 2.2 in | |
| July | 63°F (17°C) | 1.7 in | Warmest, Driest |
| August | 62°F (17°C) | 2.1 in | |
| September | 57°F (14°C) | 2.3 in | |
| October | 51°F (10°C) | 2.6 in | Wettest |
| November | 44°F (7°C) | 2.5 in | |
| December | 41°F (5°C) | 2.5 in |
Radlett has a seasonal temperature swing of 24°F / from 39°F in February to 63°F in July. Total annual precipitation is 26.0 inches, with October being the wettest month (2.6") and July the driest (1.7").