Termal, Turkey

Full City Profile

6,784 Population 93/sq mi density
443 ft Elevation 135 meters
55°F Avg Temperature 13°C
Termal experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 42°F in January while summers reach 71°F in July. Annual precipitation totals 51.1 inches. The area receives 31.0 inches of snow annually.

Temperature

42°F Jan (6°C) 71°F Jul (21°C)
Annual Average54.6°F
1% above US avg
January Average42°F (6°C)
July Average71°F (21°C)

Geography

Elevation443 ft (135 m)
Area72.8 sq mi (188.6 km²)
Population Density93/sq mi
Coordinates40.6074°N, 29.1731°E
TimezoneEurope/Istanbul

Precipitation & Snow

Annual Rainfall 51.1"
34% above US avg
Snowfall 31.0"
Wettest Month (Dec) 3.80"
Driest Month (Jul) 0.90"

Air Quality

Earthquake History

4,269 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.6. Most recent: M3.8 on Jul 5, 2025.

Aug 17, 1999 4 km ESE of Derince, Turkey M7.6 60 km
Apr 23, 2025 24 km SE of Marmara Ereğlisi, Turkey M6.2 87 km
Sep 13, 1999 4 km SE of Köseköy, Turkey M5.9 74 km
Sep 26, 2019 17 km ESE of Marmara Ere?lisi, Turkey M5.7 92 km
Nov 11, 1999 5 km N of Sapanca, Turkey M5.7 93 km
Aug 23, 2000 8 km E of Akyaz?, Turkey M5.3 131 km
Aug 19, 1999 3 km SSE of Ç?narc?k, Turkey M5.2 3 km
Sep 29, 1999 8 km NNW of Ta?köprü, Turkey M5.2 21 km
Aug 31, 1999 2 km NNE of Kar??yaka, Turkey M5.2 67 km
Jul 25, 2011 25 km SW of Marmara Ere?lisi, Turkey M5.1 122 km
Aug 17, 1999 9 km SE of Akyaz?, Turkey M5.1 128 km
Nov 7, 1999 8 km E of Akyaz?, Turkey M5.0 131 km
Apr 23, 2025 14 km S of Kumburgaz, Turkey M5.0 66 km
Aug 17, 1999 2 km NW of Kullar, Turkey M5.0 69 km
Sep 9, 1999 7 km NNW of Koruköy, Turkey M5.0 13 km
Aug 17, 1999 9 km ESE of Köseköy, Turkey M4.9 80 km
Apr 23, 2025 24 km SSW of Selimpaşa, Turkey M4.9 80 km
Jun 7, 2012 13 km SSW of Marmara Ere?lisi, Turkey M4.9 109 km
Sep 24, 2019 20 km SE of Marmara Ere?lisi, Turkey M4.9 91 km
Jan 11, 2020 16 km S of Silivri, Turkey M4.9 86 km
Source: USGS (M2.5+, 1990-2025)

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 93 km
1894 MARMARA SEA Earthquake 4.5 m 1,349 40 km
1999 KOCAELI, TURKEY Earthquake 2.5 m 17,118 69 km
1963 MARMARA SEA Earthquake 1.0 m 1 10 km
2025 MARMARA SEA Earthquake 0.1 m - 91 km
1935 MARMARA SEA Eruption + Earthquake - 5 145 km
1343 MARMARA SEA, STRAIT OF BOSPORUS Earthquake - - 77 km
1265 MARMARA SEA Earthquake - - 150 km
986 MARMARA SEA Earthquake - - 22 km
557 MARMARA SEA Earthquake - - 136 km
551 LEVANTIAN SEA Earthquake - - 65 km
543 BLACK SEA Earthquake - - 121 km
478 MARMARA SEA Earthquake - - 22 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 42°F (6°C) 3.5 in
February 40°F (4°C) 2.7 in Coldest
March 43°F (6°C) 2.5 in
April 52°F (11°C) 2.1 in
May 59°F (15°C) 1.7 in
June 67°F (19°C) 1.3 in
July 71°F (21°C) 0.9 in Warmest, Driest
August 70°F (21°C) 1.0 in
September 65°F (18°C) 1.5 in
October 57°F (14°C) 2.5 in
November 49°F (10°C) 3.0 in
December 43°F (6°C) 3.8 in Wettest

Termal has a seasonal temperature swing of 31°F / from 40°F in February to 71°F in July. Total annual precipitation is 26.5 inches, with December being the wettest month (3.8") and July the driest (0.9").

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