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Weather & Climate in Maslak, Turkey
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Maslak enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 47°F in January while summers reach 78°F in July. The area gets 288 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 35.0 inches. The area receives 6.4 inches of snow annually. The city sits at an elevation of 433 feet.
Temperature
47°F Jan (9°C)
78°F Jul (26°C)
| Annual Average | 60.5°F |
| 12% above US avg | |
| January Average | 47°F (9°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 288 days/yr |
Geography
| Elevation | 433 ft (132 m) |
| Area | 2.4 sq mi (6.1 km²) |
| Population Density | 5,195/sq mi |
| Coordinates | 41.1083°N, 29.0183°W |
| Timezone | Europe/Istanbul |
Precipitation & Snow
Air Quality
Earthquake History
2,595 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 | 82 km | 17 km |
| Apr 23, 2025 | 24 km SE of Marmara Ereğlisi, Turkey | M6.2 | 76 km | 13 km |
| Sep 13, 1999 | 4 km SE of Köseköy, Turkey | M5.9 | 97 km | 13 km |
| Sep 26, 2019 | 17 km ESE of Marmara Ere?lisi, Turkey | M5.7 | 76 km | 8 km |
| Nov 11, 1999 | 5 km N of Sapanca, Turkey | M5.7 | 112 km | 22 km |
| Aug 19, 1999 | 3 km SSE of Ç?narc?k, Turkey | M5.2 | 55 km | 10 km |
| Sep 29, 1999 | 8 km NNW of Ta?köprü, Turkey | M5.2 | 49 km | 10 km |
| Aug 31, 1999 | 2 km NNE of Kar??yaka, Turkey | M5.2 | 90 km | 10 km |
| Jul 25, 2011 | 25 km SW of Marmara Ere?lisi, Turkey | M5.1 | 112 km | 16 km |
| Apr 23, 2025 | 14 km S of Kumburgaz, Turkey | M5.0 | 51 km | 10 km |
| Aug 17, 1999 | 2 km NW of Kullar, Turkey | M5.0 | 90 km | 10 km |
| Sep 9, 1999 | 7 km NNW of Koruköy, Turkey | M5.0 | 45 km | 13 km |
| Sep 24, 2019 | 20 km SE of Marmara Ere?lisi, Turkey | M4.9 | 78 km | 10 km |
| Apr 23, 2025 | 24 km SSW of Selimpaşa, Turkey | M4.9 | 69 km | 10 km |
| Aug 17, 1999 | 9 km ESE of Köseköy, Turkey | M4.9 | 102 km | 10 km |
| Jun 7, 2012 | 13 km SSW of Marmara Ere?lisi, Turkey | M4.9 | 97 km | 15 km |
| Jan 11, 2020 | 16 km S of Silivri, Turkey | M4.9 | 68 km | 10 km |
| Aug 26, 1999 | 0 km ENE of Köseköy, Turkey | M4.8 | 93 km | 10 km |
| Mar 22, 1992 | 3 km SSW of Karacabey, Turkey | M4.8 | 117 km | 19 km |
| Sep 20, 1999 | 7 km NNE of Marmara, Turkey | M4.8 | 131 km | 10 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 | 84 km |
| 1894 | MARMARA SEA | Earthquake | 4.5 m | 1,349 | 63 km |
| 1999 | KOCAELI, TURKEY | Earthquake | 2.5 m | 17,118 | 89 km |
| 1963 | MARMARA SEA | Earthquake | 1.0 m | 1 | 47 km |
| 2025 | MARMARA SEA | Earthquake | 0.1 m | — | 79 km |
| 1935 | MARMARA SEA | Eruption + Earthquake | — | 5 | 143 km |
| 1343 | MARMARA SEA, STRAIT OF BOSPORUS | Earthquake | — | — | 69 km |
| 1265 | MARMARA SEA | Earthquake | — | — | 143 km |
| 986 | MARMARA SEA | Earthquake | — | — | 38 km |
| 557 | MARMARA SEA | Earthquake | — | — | 121 km |
| 551 | LEVANTIAN SEA | Earthquake | — | — | 82 km |
| 543 | BLACK SEA | Earthquake | — | — | 137 km |
| 478 | MARMARA SEA | Earthquake | — | — | 38 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 47°F (9°C) | 3.8 in | |
| February | 42°F (6°C) | 2.6 in | Coldest |
| March | 45°F (7°C) | 2.6 in | |
| April | 53°F (12°C) | 1.9 in | |
| May | 61°F (16°C) | 1.5 in | |
| June | 69°F (21°C) | 1.2 in | |
| July | 78°F (26°C) | 1.0 in | Warmest, Driest |
| August | 73°F (23°C) | 1.5 in | |
| September | 67°F (20°C) | 1.8 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 |
Maslak has a seasonal temperature swing of 36°F / from 42°F in February to 78°F in July. Total annual precipitation is 29.1 inches, with December being the wettest month (4.6") and July the driest (1.0").