All Countries
Weather & Climate in Sultanbeyli, Turkey
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Sultanbeyli enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 42°F in January while summers reach 74°F in July. The area gets 282 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 29.5 inches (drier than the 38-inch national average). The city sits at an elevation of 495 feet.
Temperature
42°F Jan (5°C)
74°F Jul (23°C)
| Annual Average | 57.1°F |
| 6% above US avg | |
| January Average | 42°F (5°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 282 days/yr |
Geography
| Elevation | 495 ft (151 m) |
| Area | 1.0 sq mi (2.6 km²) |
| Population Density | 286,622/sq mi |
| Coordinates | 40.9607°N, 29.2707°W |
| Timezone | Europe/Istanbul |
Precipitation & Snow
Air Quality
Earthquake History
3,313 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 | 55 km | 17 km |
| Apr 23, 2025 | 24 km SE of Marmara Ereğlisi, Turkey | M6.2 | 92 km | 13 km |
| Sep 13, 1999 | 4 km SE of Köseköy, Turkey | M5.9 | 71 km | 13 km |
| Nov 11, 1999 | 5 km N of Sapanca, Turkey | M5.7 | 87 km | 22 km |
| Sep 26, 2019 | 17 km ESE of Marmara Ere?lisi, Turkey | M5.7 | 94 km | 8 km |
| Aug 23, 2000 | 8 km E of Akyaz?, Turkey | M5.3 | 126 km | 15 km |
| Aug 19, 1999 | 3 km SSE of Ç?narc?k, Turkey | M5.2 | 40 km | 10 km |
| Aug 31, 1999 | 2 km NNE of Kar??yaka, Turkey | M5.2 | 64 km | 10 km |
| Sep 29, 1999 | 8 km NNW of Ta?köprü, Turkey | M5.2 | 26 km | 10 km |
| Aug 17, 1999 | 9 km SE of Akyaz?, Turkey | M5.1 | 125 km | 10 km |
| Jul 25, 2011 | 25 km SW of Marmara Ere?lisi, Turkey | M5.1 | 129 km | 16 km |
| Nov 7, 1999 | 8 km E of Akyaz?, Turkey | M5.0 | 126 km | 10 km |
| Apr 23, 2025 | 14 km S of Kumburgaz, Turkey | M5.0 | 67 km | 10 km |
| Sep 9, 1999 | 7 km NNW of Koruköy, Turkey | M5.0 | 29 km | 13 km |
| Aug 17, 1999 | 2 km NW of Kullar, Turkey | M5.0 | 64 km | 10 km |
| Sep 24, 2019 | 20 km SE of Marmara Ere?lisi, Turkey | M4.9 | 95 km | 10 km |
| Jan 11, 2020 | 16 km S of Silivri, Turkey | M4.9 | 87 km | 10 km |
| Jun 7, 2012 | 13 km SSW of Marmara Ere?lisi, Turkey | M4.9 | 114 km | 15 km |
| Apr 23, 2025 | 24 km SSW of Selimpaşa, Turkey | M4.9 | 85 km | 10 km |
| Aug 17, 1999 | 9 km ESE of Köseköy, Turkey | M4.9 | 76 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
11 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 | 100 km |
| 1894 | MARMARA SEA | Earthquake | 4.5 m | 1,349 | 63 km |
| 1999 | KOCAELI, TURKEY | Earthquake | 2.5 m | 17,118 | 63 km |
| 1963 | MARMARA SEA | Earthquake | 1.0 m | 1 | 31 km |
| 2025 | MARMARA SEA | Earthquake | 0.1 m | - | 96 km |
| 1343 | MARMARA SEA, STRAIT OF BOSPORUS | Earthquake | - | - | 84 km |
| 986 | MARMARA SEA | Earthquake | - | - | 19 km |
| 557 | MARMARA SEA | Earthquake | - | - | 141 km |
| 551 | LEVANTIAN SEA | Earthquake | - | - | 56 km |
| 543 | BLACK SEA | Earthquake | - | - | 144 km |
| 478 | MARMARA SEA | Earthquake | - | - | 19 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (5°C) | 3.8 in | Coldest |
| February | 42°F (6°C) | 2.7 in | |
| March | 45°F (7°C) | 2.6 in | |
| April | 53°F (12°C) | 2.0 in | |
| May | 61°F (16°C) | 1.5 in | |
| June | 70°F (21°C) | 1.3 in | |
| July | 74°F (23°C) | 1.1 in | Warmest, Driest |
| August | 74°F (23°C) | 1.4 in | |
| September | 68°F (20°C) | 1.9 in | |
| October | 60°F (15°C) | 3.2 in | |
| November | 52°F (11°C) | 3.5 in | |
| December | 46°F (8°C) | 4.6 in | Wettest |
Sultanbeyli has a seasonal temperature swing of 32°F / from 42°F in January to 74°F in July. Total annual precipitation is 29.5 inches, with December being the wettest month (4.6") and July the driest (1.1").