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Weather & Climate in Instow, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Instow experiences four distinct seasons with an average annual temperature of 51°F (10°C). Winters average 43°F in January while summers reach 61°F in July / relatively mild seasonal variation. The area gets 263 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 40.3 inches. The city sits at an elevation of 62 feet.
Temperature
43°F Jan (6°C)
61°F Jul (16°C)
| Annual Average | 50.8°F |
| 6% below US avg | |
| January Average | 43°F (6°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 263 days/yr |
Geography
| Elevation | 62 ft (19 m) |
| Area | 869.2 sq mi (2,251.3 km²) |
| Population Density | 1/sq mi |
| Coordinates | 51.0537°N, 4.1792°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
27 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 | 98 km | 10 km |
| Feb 17, 2018 | 5 km NE of Clydach, United Kingdom | M4.3 | 78 km | 12 km |
| Feb 20, 2014 | 17 km NNW of Ilfracombe, United Kingdom | M4.1 | 34 km | 3 km |
| May 31, 2001 | 20 km NNW of Flexbury, United Kingdom | M4.0 | 36 km | 29 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.7 | 84 km | 7 km |
| Aug 17, 1995 | 28 km S of Salcombe, United Kingdom | M3.6 | 122 km | 10 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.6 | 84 km | 7 km |
| Jan 1, 1994 | Wales-England region, United Kingdom | M3.6 | 59 km | 10 km |
| Oct 10, 2001 | 2 km SSE of Caerphilly, United Kingdom | M3.5 | 88 km | 10 km |
| Feb 12, 2002 | 1 km SSE of Deri, United Kingdom | M3.5 | 96 km | 8 km |
| Jun 20, 2002 | 3 km N of Marshfield, United Kingdom | M3.4 | 95 km | 14 km |
| Feb 24, 2023 | 1 km ENE of Brynmawr, United Kingdom | M3.4 | 110 km | 10 km |
| Jan 29, 2004 | 2 km E of North Petherton, United Kingdom | M3.3 | 84 km | 7 km |
| Sep 23, 1992 | 1 km NNE of Tiverton, United Kingdom | M3.3 | 51 km | 10 km |
| Jul 30, 1999 | 2 km ENE of Bargoed, United Kingdom | M3.3 | 98 km | 6 km |
| Oct 16, 1997 | 4 km ENE of Torquay, United Kingdom | M3.2 | 81 km | 10 km |
| Jan 28, 2002 | 1 km S of Abercarn, United Kingdom | M3.0 | 97 km | 10 km |
| Sep 5, 1999 | 15 km WSW of Salcombe, United Kingdom | M2.9 | 99 km | 5 km |
| Feb 11, 1998 | 4 km SE of Newport, United Kingdom | M2.9 | 103 km | 10 km |
| Aug 17, 1992 | 1 km E of Machen, United Kingdom | M2.9 | 95 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 | — | 103 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 4.5 in | |
| February | 42°F (6°C) | 3.1 in | Coldest |
| March | 44°F (7°C) | 3.0 in | |
| April | 47°F (8°C) | 2.4 in | |
| May | 53°F (11°C) | 2.2 in | Driest |
| June | 57°F (14°C) | 2.5 in | |
| July | 61°F (16°C) | 2.5 in | Warmest |
| August | 61°F (16°C) | 3.0 in | |
| September | 57°F (14°C) | 3.5 in | |
| October | 53°F (11°C) | 4.3 in | |
| November | 47°F (9°C) | 4.8 in | Wettest |
| December | 44°F (7°C) | 4.7 in |
Instow has a seasonal temperature swing of 19°F / from 42°F in February to 61°F in July. Total annual precipitation is 40.3 inches, with November being the wettest month (4.8") and May the driest (2.2").