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Körfez, Turkey

Full City Profile

90,580 Population 779/sq mi density
187 ft Elevation 57 meters
56°F Avg Temperature 13°C
Körfez enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 41°F in January while summers reach 72°F in July. The area gets 284 sunny days per year. Annual precipitation totals 28.6 inches. The area receives 0.0 inches of snow annually.

Temperature

41°F Jan (5°C) 72°F Jul (22°C)
Annual Average56.0°F
4% above US avg
January Average41°F (5°C)
July Average72°F (22°C)
Sunny Days284 days/yr

Geography

Elevation187 ft (57 m)
Area116.2 sq mi (301.0 km²)
Population Density779/sq mi
Coordinates40.7670°N, 29.7828°W
TimezoneEurope/Istanbul

Precipitation & Snow

Annual Rainfall 28.6"
25% below US avg
Snowfall 0.0"
Wettest Month (Dec) 4.02"
Driest Month (Jul) 1.18"

Air Quality

Earthquake History

3,462 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.6. Most recent: M3.8 on Jul 5, 2025.

Aug 17, 1999 4 km ESE of Derince, Turkey M7.6 7 km
Nov 12, 1999 8 km S of Düzce, Turkey M7.2 116 km
Apr 23, 2025 24 km SE of Marmara Ereğlisi, Turkey M6.2 134 km
Sep 13, 1999 4 km SE of Köseköy, Turkey M5.9 23 km
Sep 26, 2019 17 km ESE of Marmara Ere?lisi, Turkey M5.7 138 km
Nov 11, 1999 5 km N of Sapanca, Turkey M5.7 41 km
Nov 12, 1999 7 km SSW of Düzce, Turkey M5.5 113 km
Aug 23, 2000 8 km E of Akyaz?, Turkey M5.3 80 km
Aug 31, 1999 2 km NNE of Kar??yaka, Turkey M5.2 15 km
Aug 19, 1999 3 km SSE of Ç?narc?k, Turkey M5.2 57 km
Sep 29, 1999 8 km NNW of Ta?köprü, Turkey M5.2 37 km
Nov 12, 1999 11 km W of Bolu, Turkey M5.2 142 km
Aug 17, 1999 9 km SE of Akyaz?, Turkey M5.1 78 km
Apr 23, 2025 14 km S of Kumburgaz, Turkey M5.0 110 km
Sep 9, 1999 7 km NNW of Koruköy, Turkey M5.0 54 km
Nov 7, 1999 8 km E of Akyaz?, Turkey M5.0 80 km
Aug 17, 1999 2 km NW of Kullar, Turkey M5.0 16 km
Apr 23, 2025 24 km SSW of Selimpaşa, Turkey M4.9 127 km
Aug 17, 1999 9 km ESE of Köseköy, Turkey M4.9 28 km
Aug 17, 1999 11 km ESE of Akyaz?, Turkey M4.9 83 km
Source: USGS (M2.5+, 1990–2025)

Tsunami History

9 tsunamis recorded within 500 km. Highest wave on record: 6.0 m (20 ft).

Year Location Cause Max Wave Deaths Distance
1509 MARMARA SEA Earthquake 6.0 m 5,000 142 km
1894 MARMARA SEA Earthquake 4.5 m 1,349 93 km
1999 KOCAELI, TURKEY Earthquake 2.5 m 17,118 16 km
1963 MARMARA SEA Earthquake 1.0 m 1 53 km
2025 MARMARA SEA Earthquake 0.1 m 138 km
1343 MARMARA SEA, STRAIT OF BOSPORUS Earthquake 125 km
986 MARMARA SEA Earthquake 49 km
551 LEVANTIAN SEA Earthquake 11 km
478 MARMARA SEA Earthquake 49 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 41°F (5°C) 3.4 in Coldest
February 42°F (5°C) 2.6 in
March 45°F (7°C) 2.5 in
April 53°F (12°C) 2.0 in
May 61°F (16°C) 1.9 in
June 68°F (20°C) 1.6 in
July 72°F (22°C) 1.2 in Driest
August 72°F (22°C) 1.4 in Warmest
September 66°F (19°C) 1.9 in
October 59°F (15°C) 3.1 in
November 51°F (11°C) 3.1 in
December 45°F (7°C) 4.0 in Wettest

Körfez has a seasonal temperature swing of 31°F / from 41°F in January to 72°F in August. Total annual precipitation is 28.6 inches, with December being the wettest month (4.0") and July the driest (1.2").

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