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Weather & Climate in Gölcük, Turkey
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Gölcük enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 45°F in January while summers reach 74°F in July. The area gets 301 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 29.6 inches (drier than the 38-inch national average). The area receives 12.1 inches of snow annually. The city sits at an elevation of 1,447 feet.
Temperature
45°F Jan (7°C)
74°F Jul (24°C)
| Annual Average | 56.7°F |
| 5% above US avg | |
| January Average | 45°F (7°C) |
| July Average | 74°F (24°C) |
| Sunny Days | 301 days/yr |
Geography
| Elevation | 1,447 ft (441 m) |
| Area | 427.8 sq mi (1,108.0 km²) |
| Population Density | 2/sq mi |
| Coordinates | 39.3131°N, 27.9832°W |
| Timezone | Europe/Istanbul |
Precipitation & Snow
Air Quality
Earthquake History
7,040 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.3.
| Jun 12, 2017 | 5 km S of Plomári, Greece | M6.3 | 146 km | 12 km |
| Aug 10, 2025 | 10 km WSW of Bigadiç, Turkey | M6.1 | 7 km | 10 km |
| May 19, 2011 | 12 km ENE of Simav, Turkey | M5.8 | 98 km | 7 km |
| Jan 22, 2020 | 15 km ESE of K?rka?aç, Turkey | M5.6 | 30 km | 6 km |
| May 24, 1994 | 4 km NE of Karaburun, Turkey | M5.5 | 144 km | 17 km |
| Jan 28, 1994 | 7 km SW of Saruhanl?, Turkey | M5.4 | 81 km | 5 km |
| Jul 23, 2003 | 14 km N of Buldan, Turkey | M5.4 | 148 km | 5 km |
| Feb 17, 2009 | 5 km ENE of Simav, Turkey | M5.2 | 94 km | 7 km |
| May 3, 2012 | 13 km NE of Simav, Turkey | M5.2 | 97 km | 3 km |
| Jun 26, 2020 | 13 km NW of Gölmarmara, Turkey | M5.2 | 61 km | 10 km |
| Jul 25, 1999 | 14 km SW of Bigadiç, Turkey | M5.2 | 2 km | 10 km |
| Jun 17, 2017 | 10 km SSE of Plomári, Greece | M5.2 | 143 km | 8 km |
| Feb 20, 2019 | 10 km N of Ayvac?k, Turkey | M5.1 | 142 km | 10 km |
| May 27, 2017 | 10 km NW of Gölmarmara, Turkey | M5.1 | 62 km | 10 km |
| Apr 21, 2017 | 17 km E of Selendi, Turkey | M5.0 | 111 km | 10 km |
| Jan 28, 2020 | Western Turkey | M5.0 | 25 km | 10 km |
| May 24, 1994 | 16 km NNE of Karaburun, Turkey | M5.0 | 134 km | 16 km |
| Jan 21, 2025 | 4 km SW of Behram, Turkey | M5.0 | 146 km | 6 km |
| Feb 4, 2020 | 13 km NNE of Akhisar, Turkey | M4.9 | 32 km | 5 km |
| Apr 21, 2017 | 12 km SE of Saruhanl?, Turkey | M4.9 | 77 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: 2.0 m (7 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1949 | CHIOS ISLAND, AEGEAN ISLANDS | Earthquake | 2.0 m | 7 | 146 km |
| 2017 | LESBOS | Earthquake | 0.2 m | 1 | 146 km |
| 1944 | EDREMIT GULF, AEGEAN SEA | Earthquake | — | 30 | 122 km |
| 1867 | LESBOS | Earthquake | — | 563 | 137 km |
| 1668 | SMYRNA, W. TURKEY | Earthquake | — | — | 127 km |
| 543 | BLACK SEA | Earthquake | — | — | 111 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Kula (94 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Kula | Pyroclastic cone(s) | 750 m (2,461 ft) | Unknown | 94 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 45°F (7°C) | 3.9 in | |
| February | 42°F (5°C) | 3.1 in | Coldest |
| March | 46°F (8°C) | 2.7 in | |
| April | 54°F (12°C) | 2.3 in | |
| May | 62°F (17°C) | 1.7 in | |
| June | 70°F (21°C) | 0.9 in | |
| July | 74°F (24°C) | 0.4 in | Warmest, Driest |
| August | 74°F (23°C) | 0.4 in | |
| September | 68°F (20°C) | 0.9 in | |
| October | 59°F (15°C) | 1.8 in | |
| November | 50°F (10°C) | 3.1 in | |
| December | 43°F (6°C) | 4.7 in | Wettest |
Gölcük has a seasonal temperature swing of 33°F / from 42°F in February to 74°F in July. Total annual precipitation is 25.9 inches, with December being the wettest month (4.7") and July the driest (0.4").