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Weather & Climate in Winchester, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Winchester experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 41°F in January while summers reach 62°F in July. The area gets 228 sunny days per year, above the national average. Annual precipitation totals 40.6 inches. The area receives 4.1 inches of snow annually. The city sits at an elevation of 200 feet.
Temperature
41°F Jan (5°C)
62°F Jul (17°C)
| Annual Average | 52.8°F |
| 2% below US avg | |
| January Average | 41°F (5°C) |
| July Average | 62°F (17°C) |
| Sunny Days | 228 days/yr |
Geography
| Elevation | 200 ft (61 m) |
| Area | 282.6 sq mi (732.0 km²) |
| Population Density | 163/sq mi |
| Coordinates | 51.0651°N, 1.3187°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
29 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.0.
| Sep 23, 2000 | 1 km WSW of Warwick, United Kingdom | M4.0 | 137 km | 13 km |
| Jul 14, 2011 | 62 km SSE of Ventnor, United Kingdom | M3.9 | 113 km | 10 km |
| May 12, 1994 | 4 km S of Shipston on Stour, United Kingdom | M3.7 | 108 km | 10 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.7 | 116 km | 7 km |
| Jan 1, 1994 | Wales-England region, United Kingdom | M3.6 | 149 km | 10 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.6 | 116 km | 7 km |
| Oct 10, 2001 | 2 km SSE of Caerphilly, United Kingdom | M3.5 | 142 km | 10 km |
| Jun 20, 2002 | 3 km N of Marshfield, United Kingdom | M3.4 | 135 km | 14 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.3 | 116 km | 7 km |
| Feb 27, 2019 | 3 km SE of Dorking, United Kingdom | M3.3 | 73 km | 10 km |
| Jul 30, 1999 | 2 km ENE of Bargoed, United Kingdom | M3.3 | 148 km | 6 km |
| Sep 9, 1995 | 0 km WNW of East Wittering, United Kingdom | M3.3 | 45 km | 10 km |
| Jun 17, 1999 | 7 km NNE of Ross on Wye, United Kingdom | M3.0 | 130 km | 10 km |
| May 19, 2019 | 7 km ESE of Swanage, United Kingdom | M3.0 | 67 km | 10 km |
| Aug 26, 2002 | 40 km NNW of Étretat, France | M3.0 | 146 km | 4 km |
| Nov 26, 1991 | 50 km N of Urville-Nacqueville, France | M3.0 | 107 km | 10 km |
| Jan 28, 2002 | 1 km S of Abercarn, United Kingdom | M3.0 | 141 km | 10 km |
| Aug 17, 1992 | 1 km E of Machen, United Kingdom | M2.9 | 139 km | 10 km |
| Feb 11, 1998 | 4 km SE of Newport, United Kingdom | M2.9 | 126 km | 10 km |
| Mar 23, 1998 | 11 km W of Chickerell, United Kingdom | M2.9 | 108 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 0.4 m (1 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2011 | PLYMOUTH, ENGLAND | Avalanche | 0.4 m | — | 134 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 3.4 in | |
| February | 40°F (4°C) | 2.2 in | Coldest |
| March | 43°F (6°C) | 2.4 in | |
| April | 47°F (8°C) | 1.9 in | |
| May | 53°F (11°C) | 1.9 in | |
| June | 58°F (14°C) | 2.2 in | |
| July | 62°F (17°C) | 1.8 in | Warmest, Driest |
| August | 62°F (17°C) | 2.1 in | |
| September | 57°F (14°C) | 2.7 in | |
| October | 51°F (11°C) | 3.2 in | |
| November | 45°F (7°C) | 3.4 in | |
| December | 41°F (5°C) | 3.4 in | Wettest |
Winchester has a seasonal temperature swing of 23°F / from 40°F in February to 62°F in July. Total annual precipitation is 30.6 inches, with December being the wettest month (3.4") and July the driest (1.8").