All Countries
Weather & Climate in Harlow, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Harlow experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 40°F in January while summers reach 62°F in July. The area gets 225 sunny days per year, above the national average. Annual precipitation totals 30.7 inches. The area receives 4.5 inches of snow annually. The city sits at an elevation of 223 feet.
Temperature
40°F Jan (5°C)
62°F Jul (17°C)
| Annual Average | 51.8°F |
| 4% below US avg | |
| January Average | 40°F (5°C) |
| July Average | 62°F (17°C) |
| Sunny Days | 225 days/yr |
Geography
| Elevation | 223 ft (68 m) |
| Area | 11.8 sq mi (30.5 km²) |
| Population Density | 8,004/sq mi |
| Coordinates | 51.7766°N, 0.1116°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
36 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 | 99 km | 10 km |
| Feb 15, 1994 | 7 km ESE of Thetford, United Kingdom | M4.4 | 84 km | 10 km |
| Oct 28, 2001 | 5 km E of Long Clawson, United Kingdom | M4.2 | 136 km | 12 km |
| Jan 23, 2007 | 57 km ENE of Broadstairs, United Kingdom | M4.1 | 140 km | 10 km |
| Sep 23, 2000 | 1 km WSW of Warwick, United Kingdom | M4.0 | 130 km | 13 km |
| Sep 15, 1994 | 38 km NE of Broadstairs, United Kingdom | M3.9 | 117 km | 10 km |
| Jan 28, 2015 | 2 km WSW of Market Overton, United Kingdom | M3.8 | 120 km | 3 km |
| May 12, 1994 | 4 km S of Shipston on Stour, United Kingdom | M3.7 | 123 km | 10 km |
| May 22, 2015 | 3 km SSE of Ramsgate, United Kingdom | M3.7 | 106 km | 12 km |
| Mar 3, 2009 | 1 km ENE of Hawkinge, United Kingdom | M3.5 | 104 km | 4 km |
| Apr 18, 2014 | 3 km WSW of Market Overton, United Kingdom | M3.5 | 120 km | 2 km |
| Feb 17, 1992 | 1 km W of Warboys, United Kingdom | M3.4 | 71 km | 10 km |
| Sep 9, 1995 | 0 km WNW of East Wittering, United Kingdom | M3.3 | 131 km | 10 km |
| Feb 27, 2019 | 3 km SE of Dorking, United Kingdom | M3.3 | 69 km | 10 km |
| Jan 21, 1999 | 4 km ENE of Old Leake, United Kingdom | M3.3 | 141 km | 10 km |
| May 4, 1990 | 0 km NE of Coquelles, France | M3.1 | 150 km | 10 km |
| Nov 5, 1994 | 5 km N of Debenham, United Kingdom | M3.0 | 92 km | 5 km |
| Nov 25, 1998 | 26 km N of Grand-Fort-Philippe, France | M3.0 | 149 km | 10 km |
| Jul 16, 2005 | 3 km WSW of Southwater, United Kingdom | M2.9 | 92 km | 5 km |
| Jan 1, 1995 | 2 km ESE of Halesworth, United Kingdom | M2.9 | 116 km | 10 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 | — | 133 km |
| 1911 | FOLKSTONE, ENGLAND | Meteorological | 0.9 m | — | 109 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (5°C) | 2.4 in | Wettest |
| February | 39°F (4°C) | 1.6 in | Coldest, Driest |
| March | 43°F (6°C) | 1.9 in | |
| April | 46°F (8°C) | 1.7 in | |
| May | 53°F (11°C) | 1.8 in | |
| June | 58°F (14°C) | 2.0 in | |
| July | 62°F (17°C) | 1.7 in | |
| August | 62°F (17°C) | 1.9 in | Warmest |
| September | 57°F (14°C) | 2.2 in | |
| October | 51°F (11°C) | 2.4 in | |
| November | 44°F (7°C) | 2.4 in | |
| December | 41°F (5°C) | 2.3 in |
Harlow has a seasonal temperature swing of 23°F / from 39°F in February to 62°F in August. Total annual precipitation is 24.2 inches, with January being the wettest month (2.4") and February the driest (1.6").