Castlerock, United Kingdom

Full City Profile

1,477 Population 1/sq mi density
177 ft Elevation 54 meters
48°F Avg Temperature 9°C
Castlerock experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 40°F in January while summers reach 58°F in July. Annual precipitation totals 54.3 inches. The area receives 0.0 inches of snow annually.

Temperature

40°F Jan (5°C) 58°F Jul (14°C)
Annual Average48.2°F
11% below US avg
January Average40°F (5°C)
July Average58°F (14°C)

Geography

Elevation177 ft (54 m)
Area1,043.6 sq mi (2,702.8 km²)
Population Density1/sq mi
Coordinates55.1500°N, 6.7833°W
TimezoneEurope/London

Precipitation & Snow

Annual Rainfall 54.3"
43% above US avg
Snowfall 0.0"
Wettest Month (Jan) 5.91"
Driest Month (May) 3.03"

Air Quality

Earthquake History

4 earthquakes (M2.5+) within 150 km since 1990. Strongest: M3.5. Most recent: M2.6 on Nov 1, 2017.

May 3, 1998 Scotland, United Kingdom M3.5 111 km
Jan 26, 1990 34 km N of Isle of Islay, United Kingdom M3.0 109 km
Aug 27, 1992 33 km NNE of Isle of Islay, United Kingdom M2.7 112 km
Nov 1, 2017 2 km NNW of Tarbert, United Kingdom M2.6 118 km
Source: USGS (M2.5+, 1990-2025)

Tsunami History

1 tsunami recorded within 500 km.

Year Location Cause Max Wave Deaths Distance
720 HEBRIDES (SCOTLAND) Questionable Earthquake - - 133 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 40°F (5°C) 5.9 in Coldest, Wettest
February 40°F (5°C) 4.6 in
March 43°F (6°C) 4.6 in
April 45°F (7°C) 3.3 in
May 50°F (10°C) 3.0 in Driest
June 54°F (12°C) 3.2 in
July 58°F (14°C) 3.5 in Warmest
August 58°F (14°C) 4.3 in
September 54°F (12°C) 4.7 in
October 50°F (10°C) 5.7 in
November 44°F (7°C) 5.8 in
December 42°F (5°C) 5.8 in

Castlerock has a seasonal temperature swing of 17°F / from 40°F in January to 58°F in July. Total annual precipitation is 54.3 inches, with January being the wettest month (5.9") and May the driest (3.0").

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