Castletown, Isle of Man

Full City Profile

3,100 Population 3,483/sq mi density

43 ft Elevation 13 meters

48°F Avg Temperature 9°C

Castletown experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 41°F in January while summers reach 58°F in July. The area gets 269 sunny days per year. Annual precipitation totals 36.7 inches. The area receives 0.0 inches of snow annually.

Temperature

41°F Jan (5°C) 58°F Jul (14°C)

Annual Average	48.4°F
	10% below US avg
January Average	41°F (5°C)
July Average	58°F (14°C)
Sunny Days	269 days/yr

Geography

Elevation	43 ft (13 m)
Area	0.9 sq mi (2.3 km²)
Population Density	3,483/sq mi
Coordinates	54.0745°N, 4.6537°W
Timezone	Europe/Isle_of_Man

Precipitation & Snow

Annual Rainfall 36.7"

3% below US avg

Snowfall 0.0"

Wettest Month (Nov) 4.06"

Driest Month (May) 2.20"

Air Quality

Earthquake History

14 earthquakes (M2.5+) within 150 km since 1990. Strongest: M3.8. Most recent: M0.0 on May 26, 2015.

May 29, 2013	14 km WSW of Nefyn, United Kingdom	M3.8	133 km
Feb 14, 2005	2 km SW of Conwy, United Kingdom	M3.8	104 km
Apr 28, 2009	3 km WSW of Flookburgh, United Kingdom	M3.7	107 km
Jul 29, 1992	8 km WNW of Caernarfon, United Kingdom	M3.5	103 km
Feb 10, 1994	2 km NNE of Tregarth, United Kingdom	M3.3	103 km
Sep 1, 1999	4 km SSW of Llanfairfechan, United Kingdom	M3.3	104 km
Aug 25, 2013	23 km W of Cleveleys, United Kingdom	M3.2	84 km
May 26, 2015	6 km WSW of Caernarfon, United Kingdom	M3.0	108 km
Jun 26, 1993	5 km WSW of High Bentham, United Kingdom	M3.0	134 km
May 13, 2001	3 km W of Locharbriggs, United Kingdom	M2.9	132 km
Jun 26, 2013	14 km WSW of Nefyn, United Kingdom	M2.8	133 km
Oct 16, 1998	1 km WSW of Y Felinheli, United Kingdom	M2.7	103 km
Apr 24, 2000	12 km NNW of Penrith, United Kingdom	M2.6	142 km
May 28, 2008	12 km WNW of Penrith, United Kingdom	M2.5	130 km

Source: USGS (M2.5+, 1990–2025)

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	41°F (5°C)	3.7 in
February	41°F (5°C)	2.8 in	Coldest
March	43°F (6°C)	2.9 in
April	45°F (7°C)	2.4 in
May	50°F (10°C)	2.2 in	Driest
June	54°F (12°C)	2.3 in
July	58°F (14°C)	2.2 in	Warmest
August	58°F (14°C)	3.0 in
September	55°F (13°C)	3.2 in
October	50°F (10°C)	4.0 in
November	45°F (7°C)	4.1 in	Wettest
December	42°F (6°C)	3.9 in

Castletown has a seasonal temperature swing of 17°F / from 41°F in February to 58°F in July. Total annual precipitation is 36.7 inches, with November being the wettest month (4.1") and May the driest (2.2").

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