Kocadere, Turkey

Full City Profile

1,137 Population 16/sq mi density

95 ft Elevation 29 meters

54°F Avg Temperature 12°C

Kocadere experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 39°F in January while summers reach 70°F in July. The area gets 288 sunny days per year. Annual precipitation totals 26.5 inches. The area receives 0.0 inches of snow annually.

Temperature

39°F Jan (4°C) 70°F Jul (21°C)

Annual Average	53.9°F
	0% below US avg
January Average	39°F (4°C)
July Average	70°F (21°C)
Sunny Days	288 days/yr

Geography

Elevation	95 ft (29 m)
Area	72.8 sq mi (188.6 km²)
Population Density	16/sq mi
Coordinates	40.6300°N, 29.0300°W
Timezone	Europe/Istanbul

Precipitation & Snow

Annual Rainfall 26.5"

30% below US avg

Snowfall 0.0"

Wettest Month (Dec) 3.82"

Driest Month (Jul) 0.87"

Air Quality

Earthquake History

4,267 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	72 km
Apr 23, 2025	24 km SE of Marmara Ereğlisi, Turkey	M6.2	74 km
Sep 13, 1999	4 km SE of Köseköy, Turkey	M5.9	86 km
Nov 11, 1999	5 km N of Sapanca, Turkey	M5.7	105 km
Sep 26, 2019	17 km ESE of Marmara Ere?lisi, Turkey	M5.7	80 km
Aug 23, 2000	8 km E of Akyaz?, Turkey	M5.3	143 km
Aug 31, 1999	2 km NNE of Kar??yaka, Turkey	M5.2	78 km
Aug 19, 1999	3 km SSE of Ç?narc?k, Turkey	M5.2	9 km
Sep 29, 1999	8 km NNW of Ta?köprü, Turkey	M5.2	29 km
Aug 17, 1999	9 km SE of Akyaz?, Turkey	M5.1	140 km
Jul 25, 2011	25 km SW of Marmara Ere?lisi, Turkey	M5.1	109 km
Nov 7, 1999	8 km E of Akyaz?, Turkey	M5.0	143 km
Apr 23, 2025	14 km S of Kumburgaz, Turkey	M5.0	54 km
Sep 9, 1999	7 km NNW of Koruköy, Turkey	M5.0	14 km
Aug 17, 1999	2 km NW of Kullar, Turkey	M5.0	80 km
Apr 23, 2025	24 km SSW of Selimpaşa, Turkey	M4.9	68 km
Jan 11, 2020	16 km S of Silivri, Turkey	M4.9	74 km
Jun 7, 2012	13 km SSW of Marmara Ere?lisi, Turkey	M4.9	97 km
Aug 17, 1999	9 km ESE of Köseköy, Turkey	M4.9	92 km
Sep 24, 2019	20 km SE of Marmara Ere?lisi, Turkey	M4.9	79 km

Source: USGS (M2.5+, 1990-2025)

Tsunami History

13 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	81 km
1894	MARMARA SEA	Earthquake	4.5 m	1,349	28 km
1999	KOCAELI, TURKEY	Earthquake	2.5 m	17,118	81 km
1963	MARMARA SEA	Earthquake	1.0 m	1	13 km
2025	MARMARA SEA	Earthquake	0.1 m	-	78 km
1935	MARMARA SEA	Eruption + Earthquake	-	5	133 km
1343	MARMARA SEA, STRAIT OF BOSPORUS	Earthquake	-	-	64 km
1265	MARMARA SEA	Earthquake	-	-	138 km
986	MARMARA SEA	Earthquake	-	-	24 km
557	MARMARA SEA	Earthquake	-	-	124 km
551	LEVANTIAN SEA	Earthquake	-	-	76 km
543	BLACK SEA	Earthquake	-	-	110 km
478	MARMARA SEA	Earthquake	-	-	24 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	39°F (4°C)	3.5 in	Coldest
February	39°F (4°C)	2.7 in
March	43°F (6°C)	2.5 in
April	51°F (11°C)	2.1 in
May	59°F (15°C)	1.8 in
June	66°F (19°C)	1.3 in
July	70°F (21°C)	0.9 in	Warmest, Driest
August	69°F (21°C)	0.9 in
September	64°F (18°C)	1.5 in
October	57°F (14°C)	2.5 in
November	49°F (9°C)	3.1 in
December	43°F (6°C)	3.8 in	Wettest

Kocadere has a seasonal temperature swing of 31°F / from 39°F in January to 70°F in July. Total annual precipitation is 26.5 inches, with December being the wettest month (3.8") and July the driest (0.9").

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