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Weather & Climate in Harrow Weald, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Harrow Weald 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. The area gets 223 sunny days per year, above the national average. Annual precipitation totals 33.6 inches. The area receives 2.7 inches of snow annually. The city sits at an elevation of 315 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) |
| Sunny Days | 223 days/yr |
Geography
| Elevation | 315 ft (96 m) |
| Area | 23.1 sq mi (59.9 km²) |
| Population Density | 618/sq mi |
| Coordinates | 51.6107°N, 0.3374°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
30 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 | 110 km | 10 km |
| Feb 15, 1994 | 7 km ESE of Thetford, United Kingdom | M4.4 | 118 km | 10 km |
| Oct 28, 2001 | 5 km E of Long Clawson, United Kingdom | M4.2 | 142 km | 12 km |
| Sep 23, 2000 | 1 km WSW of Warwick, United Kingdom | M4.0 | 115 km | 13 km |
| Sep 15, 1994 | 38 km NE of Broadstairs, United Kingdom | M3.9 | 147 km | 10 km |
| Jan 28, 2015 | 2 km WSW of Market Overton, United Kingdom | M3.8 | 127 km | 3 km |
| May 12, 1994 | 4 km S of Shipston on Stour, United Kingdom | M3.7 | 100 km | 10 km |
| May 22, 2015 | 3 km SSE of Ramsgate, United Kingdom | M3.7 | 128 km | 12 km |
| Apr 18, 2014 | 3 km WSW of Market Overton, United Kingdom | M3.5 | 127 km | 2 km |
| Mar 3, 2009 | 1 km ENE of Hawkinge, United Kingdom | M3.5 | 119 km | 4 km |
| Feb 17, 1992 | 1 km W of Warboys, United Kingdom | M3.4 | 90 km | 10 km |
| Sep 9, 1995 | 0 km WNW of East Wittering, United Kingdom | M3.3 | 101 km | 10 km |
| Feb 27, 2019 | 3 km SE of Dorking, United Kingdom | M3.3 | 45 km | 10 km |
| Nov 5, 1994 | 5 km N of Debenham, United Kingdom | M3.0 | 128 km | 5 km |
| Mar 18, 2001 | 8 km W of Marlborough, United Kingdom | M2.9 | 106 km | 10 km |
| Jul 16, 2005 | 3 km WSW of Southwater, United Kingdom | M2.9 | 67 km | 5 km |
| Jan 18, 2013 | 0 km NE of Hathern, United Kingdom | M2.9 | 146 km | 13 km |
| Jan 27, 2015 | 1 km ENE of Winchester, United Kingdom | M2.9 | 90 km | 3 km |
| Feb 15, 1994 | 4 km NNE of Banham, United Kingdom | M2.9 | 137 km | 10 km |
| Sep 22, 2015 | 2 km W of Cottesmore, United Kingdom | M2.8 | 125 km | 2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 6.0 m (20 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1858 | NORTH SEA | Unknown | 6.0 m | — | 150 km |
| 1911 | FOLKSTONE, ENGLAND | Meteorological | 0.9 m | — | 123 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 2.4 in | |
| February | 41°F (5°C) | 1.6 in | Coldest, Driest |
| March | 44°F (7°C) | 1.9 in | |
| April | 48°F (9°C) | 1.8 in | |
| May | 54°F (12°C) | 2.0 in | |
| June | 60°F (15°C) | 2.1 in | |
| July | 63°F (17°C) | 1.6 in | |
| August | 63°F (17°C) | 2.0 in | Warmest |
| September | 58°F (15°C) | 2.2 in | |
| October | 52°F (11°C) | 2.5 in | Wettest |
| November | 45°F (7°C) | 2.3 in | |
| December | 42°F (6°C) | 2.4 in |
Harrow Weald has a seasonal temperature swing of 23°F / from 41°F in February to 63°F in August. Total annual precipitation is 24.8 inches, with October being the wettest month (2.5") and February the driest (1.6").