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Kefken, Turkey

Full City Profile

1,520 Population 4/sq mi density
85 ft Elevation 26 meters
57°F Avg Temperature 14°C
Kefken enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 42°F in January while summers reach 71°F in July. The area gets 273 sunny days per year. Annual precipitation totals 34.5 inches. The area receives 0.0 inches of snow annually.

Temperature

42°F Jan (6°C) 71°F Jul (22°C)
Annual Average56.5°F
5% above US avg
January Average42°F (6°C)
July Average71°F (22°C)
Sunny Days273 days/yr

Geography

Elevation85 ft (26 m)
Area360.2 sq mi (933.0 km²)
Population Density4/sq mi
Coordinates41.1697°N, 30.2271°W
TimezoneEurope/Istanbul

Precipitation & Snow

Annual Rainfall 34.5"
9% below US avg
Snowfall 0.0"
Wettest Month (Dec) 4.96"
Driest Month (May) 1.73"

Air Quality

Earthquake History

1,887 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.6. Most recent: M4.2 on Jul 2, 2025.

Aug 17, 1999 4 km ESE of Derince, Turkey M7.6 56 km
Nov 12, 1999 8 km S of Düzce, Turkey M7.2 91 km
Sep 13, 1999 4 km SE of Köseköy, Turkey M5.9 54 km
Nov 11, 1999 5 km N of Sapanca, Turkey M5.7 47 km
Nov 12, 1999 7 km SSW of Düzce, Turkey M5.5 86 km
Aug 23, 2000 8 km E of Akyaz?, Turkey M5.3 68 km
Sep 29, 1999 8 km NNW of Ta?köprü, Turkey M5.2 88 km
Aug 31, 1999 2 km NNE of Kar??yaka, Turkey M5.2 56 km
Aug 19, 1999 3 km SSE of Ç?narc?k, Turkey M5.2 110 km
Nov 12, 1999 11 km W of Bolu, Turkey M5.2 115 km
Oct 15, 2016 117 km NNW of Ere?li, Turkey M5.1 123 km
Aug 17, 1999 9 km SE of Akyaz?, Turkey M5.1 73 km
Nov 16, 1999 2 km S of Bolu, Turkey M5.1 126 km
Nov 24, 2013 14 km WNW of Yeniça?a, Turkey M5.1 143 km
Sep 9, 1999 7 km NNW of Koruköy, Turkey M5.0 104 km
Nov 7, 1999 8 km E of Akyaz?, Turkey M5.0 68 km
Apr 23, 2025 14 km S of Kumburgaz, Turkey M5.0 150 km
Aug 17, 1999 2 km NW of Kullar, Turkey M5.0 52 km
Aug 26, 2001 24 km N of Bolu, Turkey M5.0 115 km
Aug 17, 1999 11 km ESE of Akyaz?, Turkey M4.9 73 km
Source: USGS (M2.5+, 1990–2025)

Tsunami History

6 tsunamis recorded within 500 km. Highest wave on record: 4.5 m (15 ft).

Year Location Cause Max Wave Deaths Distance
1894 MARMARA SEA Earthquake 4.5 m 1,349 143 km
1999 KOCAELI, TURKEY Earthquake 2.5 m 17,118 50 km
1963 MARMARA SEA Earthquake 1.0 m 1 104 km
986 MARMARA SEA Earthquake 96 km
551 LEVANTIAN SEA Earthquake 49 km
478 MARMARA SEA Earthquake 96 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 42°F (6°C) 4.0 in Coldest
February 43°F (6°C) 3.0 in
March 46°F (8°C) 2.8 in
April 53°F (12°C) 2.1 in
May 60°F (16°C) 1.7 in Driest
June 68°F (20°C) 1.9 in
July 71°F (22°C) 1.8 in Warmest
August 71°F (22°C) 2.2 in
September 66°F (19°C) 2.4 in
October 59°F (15°C) 3.8 in
November 52°F (11°C) 4.0 in
December 46°F (8°C) 5.0 in Wettest

Kefken has a seasonal temperature swing of 29°F / from 42°F in January to 71°F in July. Total annual precipitation is 34.5 inches, with December being the wettest month (5.0") and May the driest (1.7").

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