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Ierissós, Greece

Full City Profile

2.6 /5.0
C+ Fair
3,266 Population 7/sq mi density
20 ft Elevation 6 meters
60°F Avg Temperature 15°C
C+
Overall
2.6 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.6 / 5.0
$19,332 median income, unemployment
Ierissós enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 44°F in January while summers reach 78°F in July. The area gets 302 sunny days per year. Annual precipitation totals 18.5 inches. The area receives 0.0 inches of snow annually.

Temperature

44°F Jan (6°C) 78°F Jul (25°C)
Annual Average59.7°F
11% above US avg
January Average44°F (6°C)
July Average78°F (25°C)
Sunny Days302 days/yr

Geography

Elevation20 ft (6 m)
Area460.7 sq mi (1,193.2 km²)
Population Density7/sq mi
Coordinates40.3975°N, 23.8751°W
TimezoneEurope/Athens

Precipitation & Snow

Annual Rainfall 18.5"
51% below US avg
Snowfall 0.0"
Wettest Month (Nov) 2.56"
Driest Month (Aug) 0.55"

Air Quality

Earthquake History

1,941 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.9. Most recent: M4.1 on Aug 12, 2025.

May 24, 2014 21 km SSW of Kamariótissa, Greece M6.9 129 km
Dec 21, 1990 14 km WNW of Gouménissa, Greece M6.1 149 km
Jan 16, 2022 25 km SSE of Karyes, Greece M5.5 57 km
Jul 23, 1992 43 km ESE of Sykiá, Greece M5.5 75 km
Jun 7, 2025 6 km WNW of Karyes, Greece M5.4 28 km
May 24, 2009 11 km WNW of Stathmós Mourión, Greece M5.3 140 km
May 4, 1995 9 km NNW of Palaiochóri, Greece M5.3 29 km
Jun 9, 2003 7 km E of Tsarítsani, Greece M5.2 144 km
Mar 4, 2012 8 km ENE of Sárti, Greece M5.2 33 km
Feb 14, 2012 10 km ENE of Sárti, Greece M5.2 35 km
Aug 22, 2014 12 km S of Kassándreia, Greece M5.2 64 km
Oct 11, 2017 32 km E of Patitírion, Greece M5.1 141 km
Jul 16, 2010 24 km NNE of Patitírion, Greece M5.0 118 km
Jul 30, 2001 16 km ESE of Patitírion, Greece M5.0 146 km
Mar 3, 2021 Greece M4.9 146 km
Feb 7, 2023 4 km SSW of Níkiti, Greece M4.9 31 km
Sep 4, 2014 29 km NNW of Mýrina, Greece M4.9 91 km
Feb 15, 2025 12 km E of Ouranoupolis, Greece M4.9 23 km
Jan 2, 2018 2 km N of Stathmós Mourión, Greece M4.9 132 km
Apr 21, 2018 3 km ESE of Pefkochóri, Greece M4.9 51 km
Source: USGS (M2.5+, 1990–2025)

Tsunami History

9 tsunamis recorded within 500 km. Highest wave on record: 3.0 m (10 ft).

Year Location Cause Max Wave Deaths Distance
1905 NORTH AEGEAN SEA Eruption + Earthquake 3.0 m 11 72 km
1932 NORTH AEGEAN Earthquake 2.0 m 161 12 km
1968 LEMNOS ISLAND, NORTH AEGEAN SEA Earthquake 1.2 m 22 147 km
1893 SAMOTHRACE Earthquake 1.0 m 1 138 km
2014 NORTH AEGEAN SEA Earthquake 0.2 m 3 129 km
1965 AEGEAN SEA Earthquake 38 111 km
1955 VOLOS GULF Earthquake 8 129 km
1902 AEGEAN SEA Earthquake 5 66 km
1585 NORTH AEGEAN SEA Earthquake 57 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 44°F (6°C) 2.2 in Coldest
February 45°F (7°C) 1.6 in
March 49°F (10°C) 1.7 in
April 56°F (14°C) 1.3 in
May 65°F (18°C) 1.3 in
June 73°F (23°C) 1.2 in
July 78°F (25°C) 0.8 in Warmest
August 77°F (25°C) 0.6 in Driest
September 70°F (21°C) 0.8 in
October 61°F (16°C) 2.0 in
November 52°F (11°C) 2.6 in Wettest
December 46°F (8°C) 2.5 in

Ierissós has a seasonal temperature swing of 34°F / from 44°F in January to 78°F in July. Total annual precipitation is 18.5 inches, with November being the wettest month (2.6") and August the driest (0.6").

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