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Orhangazi, Turkey

Full City Profile

51,792 Population 325/sq mi density
394 ft Elevation 120 meters
55°F Avg Temperature 13°C
Orhangazi experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 39°F in January while summers reach 71°F in July. The area gets 291 sunny days per year. Annual precipitation totals 24.8 inches. The area receives 0.0 inches of snow annually.

Temperature

39°F Jan (4°C) 71°F Jul (22°C)
Annual Average54.7°F
1% above US avg
January Average39°F (4°C)
July Average71°F (22°C)
Sunny Days291 days/yr

Geography

Elevation394 ft (120 m)
Area159.6 sq mi (413.2 km²)
Population Density325/sq mi
Coordinates40.4892°N, 29.3089°W
TimezoneEurope/Istanbul

Precipitation & Snow

Annual Rainfall 24.8"
35% below US avg
Snowfall 0.0"
Wettest Month (Dec) 3.35"
Driest Month (Aug) 0.83"

Air Quality

Earthquake History

4,381 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 55 km
Apr 23, 2025 24 km SE of Marmara Ereğlisi, Turkey M6.2 102 km
Sep 13, 1999 4 km SE of Köseköy, Turkey M5.9 67 km
Nov 11, 1999 5 km N of Sapanca, Turkey M5.7 86 km
Sep 26, 2019 17 km ESE of Marmara Ere?lisi, Turkey M5.7 108 km
Aug 23, 2000 8 km E of Akyaz?, Turkey M5.3 121 km
Aug 19, 1999 3 km SSE of Ç?narc?k, Turkey M5.2 20 km
Aug 31, 1999 2 km NNE of Kar??yaka, Turkey M5.2 59 km
Sep 29, 1999 8 km NNW of Ta?köprü, Turkey M5.2 28 km
May 3, 2012 13 km NE of Simav, Turkey M5.2 147 km
Jul 25, 2011 25 km SW of Marmara Ere?lisi, Turkey M5.1 136 km
Aug 17, 1999 9 km SE of Akyaz?, Turkey M5.1 117 km
Aug 17, 1999 2 km NW of Kullar, Turkey M5.0 62 km
Nov 7, 1999 8 km E of Akyaz?, Turkey M5.0 122 km
Apr 23, 2025 14 km S of Kumburgaz, Turkey M5.0 83 km
Sep 9, 1999 7 km NNW of Koruköy, Turkey M5.0 29 km
Sep 24, 2019 20 km SE of Marmara Ere?lisi, Turkey M4.9 106 km
Jan 11, 2020 16 km S of Silivri, Turkey M4.9 103 km
Jun 7, 2012 13 km SSW of Marmara Ere?lisi, Turkey M4.9 124 km
Aug 17, 1999 9 km ESE of Köseköy, Turkey M4.9 72 km
Source: USGS (M2.5+, 1990–2025)

Tsunami History

10 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 5,000 108 km
1894 MARMARA SEA Earthquake 4.5 m 1,349 53 km
1999 KOCAELI, TURKEY Earthquake 2.5 m 17,118 63 km
1963 MARMARA SEA Earthquake 1.0 m 1 26 km
2025 MARMARA SEA Earthquake 0.1 m 106 km
1343 MARMARA SEA, STRAIT OF BOSPORUS Earthquake 92 km
986 MARMARA SEA Earthquake 36 km
551 LEVANTIAN SEA Earthquake 61 km
543 BLACK SEA Earthquake 130 km
478 MARMARA SEA Earthquake 36 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 39°F (4°C) 3.3 in Coldest
February 40°F (4°C) 2.6 in
March 44°F (6°C) 2.4 in
April 52°F (11°C) 2.0 in
May 60°F (15°C) 1.8 in
June 67°F (20°C) 1.3 in
July 71°F (22°C) 0.9 in Warmest
August 71°F (22°C) 0.8 in Driest
September 65°F (18°C) 1.4 in
October 57°F (14°C) 2.3 in
November 49°F (9°C) 2.8 in
December 43°F (6°C) 3.4 in Wettest

Orhangazi has a seasonal temperature swing of 33°F / from 39°F in January to 71°F in July. Total annual precipitation is 24.8 inches, with December being the wettest month (3.4") and August the driest (0.8").

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