Göynük, Turkey

Full City Profile

5,600 Population 186,667/sq mi density

2,444 ft Elevation 745 meters

49°F Avg Temperature 10°C

Göynük experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 32°F in January while summers reach 66°F in July. The area gets 297 sunny days per year. Annual precipitation totals 21.7 inches. The area receives 4.3 inches of snow annually.

Temperature

32°F Jan (-0°C) 66°F Jul (19°C)

Annual Average	49.4°F
	9% below US avg
January Average	32°F (-0°C)
July Average	66°F (19°C)
Sunny Days	297 days/yr

Geography

Elevation	2,444 ft (745 m)
Area	0.0 sq mi (0.1 km²)
Population Density	186,667/sq mi
Coordinates	40.4003°N, 30.7883°W
Timezone	Europe/Istanbul

Precipitation & Snow

Annual Rainfall 21.7"

43% below US avg

Snowfall 4.3"

Wettest Month (Dec) 2.76"

Driest Month (Aug) 0.83"

Air Quality

Earthquake History

2,602 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	87 km
Nov 12, 1999	8 km S of Düzce, Turkey	M7.2	51 km
Sep 13, 1999	4 km SE of Köseköy, Turkey	M5.9	72 km
Nov 11, 1999	5 km N of Sapanca, Turkey	M5.7	58 km
Nov 12, 1999	7 km SSW of Düzce, Turkey	M5.5	51 km
Aug 23, 2000	8 km E of Akyaz?, Turkey	M5.3	32 km
Nov 12, 1999	11 km W of Bolu, Turkey	M5.2	69 km
Aug 31, 1999	2 km NNE of Kar??yaka, Turkey	M5.2	79 km
Sep 29, 1999	8 km NNW of Ta?köprü, Turkey	M5.2	128 km
Aug 19, 1999	3 km SSE of Ç?narc?k, Turkey	M5.2	142 km
Nov 24, 2013	14 km WNW of Yeniça?a, Turkey	M5.1	103 km
Aug 17, 1999	9 km SE of Akyaz?, Turkey	M5.1	25 km
Nov 16, 1999	2 km S of Bolu, Turkey	M5.1	78 km
Nov 7, 1999	8 km E of Akyaz?, Turkey	M5.0	33 km
Sep 9, 1999	7 km NNW of Koruköy, Turkey	M5.0	143 km
Aug 26, 2001	24 km N of Bolu, Turkey	M5.0	90 km
Aug 17, 1999	2 km NW of Kullar, Turkey	M5.0	79 km
Aug 17, 1999	9 km ESE of Köseköy, Turkey	M4.9	67 km
Aug 17, 1999	11 km ESE of Akyaz?, Turkey	M4.9	28 km
Feb 14, 2000	28 km SW of Devrek, Turkey	M4.9	107 km

Source: USGS (M2.5+, 1990–2025)

Tsunami History

5 tsunamis recorded within 500 km. Highest wave on record: 2.5 m (8 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1999	KOCAELI, TURKEY	Earthquake	2.5 m	17,118	80 km
1963	MARMARA SEA	Earthquake	1.0 m	1	142 km
986	MARMARA SEA	Earthquake	—	—	141 km
551	LEVANTIAN SEA	Earthquake	—	—	87 km
478	MARMARA SEA	Earthquake	—	—	141 km

Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	32°F (-0°C)	2.4 in	Coldest
February	34°F (1°C)	1.9 in
March	39°F (4°C)	2.1 in
April	48°F (9°C)	2.1 in
May	56°F (13°C)	2.3 in
June	62°F (17°C)	1.9 in
July	66°F (19°C)	1.0 in	Warmest
August	66°F (19°C)	0.8 in	Driest
September	60°F (16°C)	0.9 in
October	52°F (11°C)	1.6 in
November	43°F (6°C)	1.8 in
December	36°F (2°C)	2.8 in	Wettest

Göynük has a seasonal temperature swing of 34°F / from 32°F in January to 66°F in July. Total annual precipitation is 21.7 inches, with December being the wettest month (2.8") and August the driest (0.8").

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