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Weather & Climate in Büyük Sinekli, Turkey
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Büyük Sinekli experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 40°F in January while summers reach 72°F in July. The area gets 290 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 25.4 inches (drier than the 38-inch national average). The city sits at an elevation of 568 feet.
Temperature
40°F Jan (4°C)
72°F Jul (22°C)
| Annual Average | 55.3°F |
| 2% above US avg | |
| January Average | 40°F (4°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 290 days/yr |
Geography
| Elevation | 568 ft (173 m) |
| Area | 6.3 sq mi (16.4 km²) |
| Population Density | 111/sq mi |
| Coordinates | 41.2256°N, 28.2131°W |
| Timezone | Europe/Istanbul |
Precipitation & Snow
Air Quality
Earthquake History
2,077 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 | 148 km | 17 km |
| Apr 23, 2025 | 24 km SE of Marmara Ereğlisi, Turkey | M6.2 | 44 km | 13 km |
| Sep 26, 2019 | 17 km ESE of Marmara Ere?lisi, Turkey | M5.7 | 36 km | 8 km |
| Sep 29, 1999 | 8 km NNW of Ta?köprü, Turkey | M5.2 | 109 km | 10 km |
| Aug 19, 1999 | 3 km SSE of Ç?narc?k, Turkey | M5.2 | 103 km | 10 km |
| Jul 25, 2011 | 25 km SW of Marmara Ere?lisi, Turkey | M5.1 | 61 km | 16 km |
| Apr 23, 2025 | 14 km S of Kumburgaz, Turkey | M5.0 | 44 km | 10 km |
| Sep 9, 1999 | 7 km NNW of Koruköy, Turkey | M5.0 | 96 km | 13 km |
| Jan 11, 2020 | 16 km S of Silivri, Turkey | M4.9 | 33 km | 10 km |
| Jun 7, 2012 | 13 km SSW of Marmara Ere?lisi, Turkey | M4.9 | 49 km | 15 km |
| Apr 23, 2025 | 24 km SSW of Selimpaşa, Turkey | M4.9 | 42 km | 10 km |
| Sep 24, 2019 | 20 km SE of Marmara Ere?lisi, Turkey | M4.9 | 41 km | 10 km |
| Mar 22, 1992 | 3 km SSW of Karacabey, Turkey | M4.8 | 116 km | 19 km |
| Sep 20, 1999 | 7 km NNE of Marmara, Turkey | M4.8 | 83 km | 10 km |
| Dec 12, 1993 | 26 km NNE of Durusu, Turkey | M4.8 | 60 km | 28 km |
| Feb 12, 1991 | 18 km SW of K?nal?, Turkey | M4.8 | 72 km | 10 km |
| Apr 13, 1995 | 18 km E of Kumba?, Turkey | M4.7 | 61 km | 24 km |
| Oct 20, 1999 | 11 km SSW of Adalar, Turkey | M4.6 | 89 km | 10 km |
| Aug 17, 1999 | 0 km WNW of Ç?narc?k, Turkey | M4.6 | 99 km | 10 km |
| Jul 3, 2014 | 16 km SSW of Band?rma, Turkey | M4.6 | 116 km | 12 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
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 | 48 km |
| 1894 | MARMARA SEA | Earthquake | 4.5 m | 1,349 | 81 km |
| 1912 | MARMARA SEA | Eruption + Earthquake | 2.7 m | 2,800 | 107 km |
| 1963 | MARMARA SEA | Earthquake | 1.0 m | 1 | 99 km |
| 2025 | MARMARA SEA | Earthquake | 0.1 m | — | 43 km |
| 1935 | MARMARA SEA | Eruption + Earthquake | — | 5 | 93 km |
| 1343 | MARMARA SEA, STRAIT OF BOSPORUS | Earthquake | — | — | 48 km |
| 1265 | MARMARA SEA | Earthquake | — | — | 90 km |
| 986 | MARMARA SEA | Earthquake | — | — | 95 km |
| 557 | MARMARA SEA | Earthquake | — | — | 63 km |
| 551 | LEVANTIAN SEA | Earthquake | — | — | 149 km |
| 543 | BLACK SEA | Earthquake | — | — | 109 km |
| 478 | MARMARA SEA | Earthquake | — | — | 95 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (4°C) | 3.2 in | Coldest |
| February | 41°F (5°C) | 2.3 in | |
| March | 44°F (7°C) | 2.3 in | |
| April | 52°F (11°C) | 1.9 in | |
| May | 60°F (15°C) | 1.6 in | |
| June | 67°F (20°C) | 1.4 in | |
| July | 72°F (22°C) | 0.9 in | Warmest, Driest |
| August | 72°F (22°C) | 1.0 in | |
| September | 66°F (19°C) | 1.5 in | |
| October | 58°F (15°C) | 2.4 in | |
| November | 50°F (10°C) | 3.2 in | |
| December | 44°F (6°C) | 3.8 in | Wettest |
Büyük Sinekli has a seasonal temperature swing of 32°F / from 40°F in January to 72°F in July. Total annual precipitation is 25.4 inches, with December being the wettest month (3.8") and July the driest (0.9").