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Weather & Climate in Kefken, Turkey
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Kefken enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 42°F in January while summers reach 71°F in July. The area gets 273 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 34.5 inches. The city sits at an elevation of 85 feet.
Temperature
42°F Jan (6°C)
71°F Jul (22°C)
| Annual Average | 56.5°F |
| 5% above US avg | |
| January Average | 42°F (6°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 273 days/yr |
Geography
| Elevation | 85 ft (26 m) |
| Area | 360.2 sq mi (933.0 km²) |
| Population Density | 4/sq mi |
| Coordinates | 41.1697°N, 30.2271°W |
| Timezone | Europe/Istanbul |
Precipitation & Snow
Air Quality
Earthquake History
1,887 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.6.
| Aug 17, 1999 | 4 km ESE of Derince, Turkey | M7.6 | 56 km | 17 km |
| Nov 12, 1999 | 8 km S of Düzce, Turkey | M7.2 | 91 km | 10 km |
| Sep 13, 1999 | 4 km SE of Köseköy, Turkey | M5.9 | 54 km | 13 km |
| Nov 11, 1999 | 5 km N of Sapanca, Turkey | M5.7 | 47 km | 22 km |
| Nov 12, 1999 | 7 km SSW of Düzce, Turkey | M5.5 | 86 km | 10 km |
| Aug 23, 2000 | 8 km E of Akyaz?, Turkey | M5.3 | 68 km | 15 km |
| Sep 29, 1999 | 8 km NNW of Ta?köprü, Turkey | M5.2 | 88 km | 10 km |
| Aug 31, 1999 | 2 km NNE of Kar??yaka, Turkey | M5.2 | 56 km | 10 km |
| Aug 19, 1999 | 3 km SSE of Ç?narc?k, Turkey | M5.2 | 110 km | 10 km |
| Nov 12, 1999 | 11 km W of Bolu, Turkey | M5.2 | 115 km | 10 km |
| Oct 15, 2016 | 117 km NNW of Ere?li, Turkey | M5.1 | 123 km | 6 km |
| Aug 17, 1999 | 9 km SE of Akyaz?, Turkey | M5.1 | 73 km | 10 km |
| Nov 16, 1999 | 2 km S of Bolu, Turkey | M5.1 | 126 km | 10 km |
| Nov 24, 2013 | 14 km WNW of Yeniça?a, Turkey | M5.1 | 143 km | 6 km |
| Sep 9, 1999 | 7 km NNW of Koruköy, Turkey | M5.0 | 104 km | 13 km |
| Nov 7, 1999 | 8 km E of Akyaz?, Turkey | M5.0 | 68 km | 10 km |
| Apr 23, 2025 | 14 km S of Kumburgaz, Turkey | M5.0 | 150 km | 10 km |
| Aug 17, 1999 | 2 km NW of Kullar, Turkey | M5.0 | 52 km | 10 km |
| Aug 26, 2001 | 24 km N of Bolu, Turkey | M5.0 | 115 km | 8 km |
| Aug 17, 1999 | 11 km ESE of Akyaz?, Turkey | M4.9 | 73 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
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 | 143 km |
| 1999 | KOCAELI, TURKEY | Earthquake | 2.5 m | 17,118 | 50 km |
| 1963 | MARMARA SEA | Earthquake | 1.0 m | 1 | 104 km |
| 986 | MARMARA SEA | Earthquake | - | - | 96 km |
| 551 | LEVANTIAN SEA | Earthquake | - | - | 49 km |
| 478 | MARMARA SEA | Earthquake | - | - | 96 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 4.0 in | Coldest |
| February | 43°F (6°C) | 3.0 in | |
| March | 46°F (8°C) | 2.8 in | |
| April | 53°F (12°C) | 2.1 in | |
| May | 60°F (16°C) | 1.7 in | Driest |
| June | 68°F (20°C) | 1.9 in | |
| July | 71°F (22°C) | 1.8 in | Warmest |
| August | 71°F (22°C) | 2.2 in | |
| September | 66°F (19°C) | 2.4 in | |
| October | 59°F (15°C) | 3.8 in | |
| November | 52°F (11°C) | 4.0 in | |
| December | 46°F (8°C) | 5.0 in | Wettest |
Kefken has a seasonal temperature swing of 29°F / from 42°F in January to 71°F in July. Total annual precipitation is 34.5 inches, with December being the wettest month (5.0") and May the driest (1.7").