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Weather & Climate in Ottery St Mary, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ottery St Mary experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 42°F in January while summers reach 61°F in July / relatively mild seasonal variation. The area gets 266 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 38.9 inches. The city sits at an elevation of 266 feet.
Temperature
42°F Jan (5°C)
61°F Jul (16°C)
| Annual Average | 50.2°F |
| 7% below US avg | |
| January Average | 42°F (5°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 266 days/yr |
Geography
| Elevation | 266 ft (81 m) |
| Area | 1,562.7 sq mi (4,047.3 km²) |
| Population Density | 12/sq mi |
| Coordinates | 50.7500°N, 3.2667°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
33 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Oct 25, 1999 | 10 km N of Hirwaun, United Kingdom | M4.5 | 122 km | 10 km |
| Feb 17, 2018 | 5 km NE of Clydach, United Kingdom | M4.3 | 116 km | 12 km |
| Feb 20, 2014 | 17 km NNW of Ilfracombe, United Kingdom | M4.1 | 93 km | 3 km |
| May 31, 2001 | 20 km NNW of Flexbury, United Kingdom | M4.0 | 103 km | 29 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.7 | 43 km | 7 km |
| Aug 17, 1995 | 28 km S of Salcombe, United Kingdom | M3.6 | 93 km | 10 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.6 | 43 km | 7 km |
| Jan 1, 1994 | Wales-England region, United Kingdom | M3.6 | 61 km | 10 km |
| Oct 10, 2001 | 2 km SSE of Caerphilly, United Kingdom | M3.5 | 89 km | 10 km |
| Feb 12, 2002 | 1 km SSE of Deri, United Kingdom | M3.5 | 106 km | 8 km |
| Jun 20, 2002 | 3 km N of Marshfield, United Kingdom | M3.4 | 92 km | 14 km |
| Feb 24, 2023 | 1 km ENE of Brynmawr, United Kingdom | M3.4 | 118 km | 10 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.3 | 43 km | 7 km |
| Sep 23, 1992 | 1 km NNE of Tiverton, United Kingdom | M3.3 | 24 km | 10 km |
| Jul 30, 1999 | 2 km ENE of Bargoed, United Kingdom | M3.3 | 105 km | 6 km |
| Oct 16, 1997 | 4 km ENE of Torquay, United Kingdom | M3.2 | 33 km | 10 km |
| May 19, 2019 | 7 km ESE of Swanage, United Kingdom | M3.0 | 101 km | 10 km |
| Jan 28, 2002 | 1 km S of Abercarn, United Kingdom | M3.0 | 98 km | 10 km |
| Nov 26, 1991 | 50 km N of Urville-Nacqueville, France | M3.0 | 130 km | 10 km |
| Jun 17, 1999 | 7 km NNE of Ross on Wye, United Kingdom | M3.0 | 145 km | 10 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 | — | 34 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (5°C) | 4.3 in | |
| February | 41°F (5°C) | 3.2 in | Coldest |
| March | 44°F (7°C) | 3.1 in | |
| April | 47°F (8°C) | 2.4 in | |
| May | 52°F (11°C) | 2.5 in | |
| June | 58°F (14°C) | 2.3 in | Driest |
| July | 61°F (16°C) | 2.6 in | Warmest |
| August | 61°F (16°C) | 3.0 in | |
| September | 57°F (14°C) | 3.1 in | |
| October | 52°F (11°C) | 3.9 in | |
| November | 46°F (8°C) | 4.2 in | |
| December | 43°F (6°C) | 4.4 in | Wettest |
Ottery St Mary has a seasonal temperature swing of 20°F / from 41°F in February to 61°F in July. Total annual precipitation is 38.9 inches, with December being the wettest month (4.4") and June the driest (2.3").