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Bilecik, Turkey

Full City Profile

74,457 Population 676,882/sq mi density
1,696 ft Elevation 517 meters
51°F Avg Temperature 11°C
Bilecik experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 33°F in January while summers reach 67°F in July. The area gets 298 sunny days per year. Annual precipitation totals 20.9 inches. The area receives 2.5 inches of snow annually.

Temperature

33°F Jan (1°C) 67°F Jul (19°C)
Annual Average51.0°F
6% below US avg
January Average33°F (1°C)
July Average67°F (19°C)
Sunny Days298 days/yr

Geography

Elevation1,696 ft (517 m)
Area0.1 sq mi (0.3 km²)
Population Density676,882/sq mi
Coordinates40.1419°N, 29.9793°W
TimezoneEurope/Istanbul

Precipitation & Snow

Annual Rainfall 20.9"
45% below US avg
Snowfall 2.5"
Wettest Month (Dec) 2.68"
Driest Month (Aug) 0.59"

Air Quality

Earthquake History

3,928 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 68 km
Nov 12, 1999 8 km S of Düzce, Turkey M7.2 121 km
Sep 13, 1999 4 km SE of Köseköy, Turkey M5.9 63 km
May 19, 2011 12 km ENE of Simav, Turkey M5.8 134 km
Nov 11, 1999 5 km N of Sapanca, Turkey M5.7 71 km
Nov 12, 1999 7 km SSW of Düzce, Turkey M5.5 120 km
Aug 23, 2000 8 km E of Akyaz?, Turkey M5.3 87 km
Feb 17, 2009 5 km ENE of Simav, Turkey M5.2 141 km
Aug 31, 1999 2 km NNE of Kar??yaka, Turkey M5.2 63 km
Sep 29, 1999 8 km NNW of Ta?köprü, Turkey M5.2 85 km
Nov 12, 1999 11 km W of Bolu, Turkey M5.2 143 km
May 3, 2012 13 km NE of Simav, Turkey M5.2 132 km
Aug 19, 1999 3 km SSE of Ç?narc?k, Turkey M5.2 89 km
Aug 17, 1999 9 km SE of Akyaz?, Turkey M5.1 80 km
Aug 31, 2021 19 km W of ?hsaniye, Turkey M5.1 124 km
Aug 17, 1999 2 km NW of Kullar, Turkey M5.0 67 km
Nov 7, 1999 8 km E of Akyaz?, Turkey M5.0 88 km
Sep 9, 1999 7 km NNW of Koruköy, Turkey M5.0 95 km
Aug 17, 1999 9 km ESE of Köseköy, Turkey M4.9 65 km
Aug 17, 1999 11 km ESE of Akyaz?, Turkey M4.9 86 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 1,349 120 km
1999 KOCAELI, TURKEY Earthquake 2.5 m 17,118 69 km
1963 MARMARA SEA Earthquake 1.0 m 1 93 km
986 MARMARA SEA Earthquake 99 km
551 LEVANTIAN SEA Earthquake 74 km
478 MARMARA SEA Earthquake 99 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 33°F (1°C) 2.5 in Coldest
February 36°F (2°C) 2.0 in
March 41°F (5°C) 2.1 in
April 50°F (10°C) 2.0 in
May 57°F (14°C) 2.1 in
June 63°F (17°C) 1.6 in
July 67°F (19°C) 0.8 in Warmest
August 67°F (19°C) 0.6 in Driest
September 61°F (16°C) 0.9 in
October 54°F (12°C) 1.8 in
November 45°F (7°C) 1.9 in
December 38°F (3°C) 2.7 in Wettest

Bilecik has a seasonal temperature swing of 34°F / from 33°F in January to 67°F in July. Total annual precipitation is 20.9 inches, with December being the wettest month (2.7") and August the driest (0.6").

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