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Weather & Climate in Néa Ionía, Greece
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Néa Ionía enjoys a temperate climate with an average annual temperature of 58°F (15°C). Winters average 42°F in January while summers reach 76°F in July. The area gets 301 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 19.2 inches (drier than the 38-inch national average). The city sits at an elevation of 112 feet.
Temperature
42°F Jan (6°C)
76°F Jul (25°C)
| Annual Average | 58.3°F |
| 8% above US avg | |
| January Average | 42°F (6°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 301 days/yr |
Geography
| Elevation | 112 ft (34 m) |
| Area | 244.6 sq mi (633.4 km²) |
| Population Density | 134/sq mi |
| Coordinates | 39.3790°N, 22.9275°W |
| Timezone | Europe/Athens |
Precipitation & Snow
Air Quality
Earthquake History
5,859 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.6.
| May 13, 1995 | 10 km W of Aianí, Greece | M6.6 | 136 km | 14 km |
| Jun 15, 1995 | 8 km WNW of Galaxídhion, Greece | M6.5 | 122 km | 14 km |
| Jul 26, 2001 | 32 km WNW of Skýros, Greece | M6.5 | 119 km | 10 km |
| Mar 3, 2021 | 9 km W of Týrnavos, Greece | M6.3 | 77 km | 8 km |
| Nov 18, 1992 | 10 km SE of Galaxídhion, Greece | M5.9 | 126 km | 15 km |
| Mar 4, 2021 | 11 km E of Verdikoússa, Greece | M5.8 | 83 km | 10 km |
| Mar 18, 1993 | 11 km NNE of Témeni, Greece | M5.8 | 134 km | 59 km |
| Mar 12, 2021 | 8 km W of Elassóna, Greece | M5.6 | 92 km | 7 km |
| Nov 5, 1997 | 10 km NW of Galaxídhion, Greece | M5.6 | 119 km | 24 km |
| Jan 18, 2010 | 11 km E of Náfpaktos, Greece | M5.5 | 137 km | 1 km |
| Mar 4, 2021 | 7 km S of Kraniá Elassónas, Greece | M5.5 | 99 km | 10 km |
| Jan 16, 2022 | 25 km SSE of Karyes, Greece | M5.5 | 143 km | 7 km |
| Jul 23, 1992 | 43 km ESE of Sykiá, Greece | M5.5 | 136 km | 7 km |
| Feb 17, 2021 | 11 km N of Kamárai, Greece | M5.5 | 134 km | 5 km |
| Jan 22, 2010 | 14 km NNE of Kamárai, Greece | M5.4 | 131 km | 5 km |
| Jun 7, 2025 | 6 km WNW of Karyes, Greece | M5.4 | 145 km | 10 km |
| Jun 15, 1995 | 3 km E of Galaxídhion, Greece | M5.4 | 119 km | 10 km |
| Nov 4, 1993 | 8 km N of Kamárai, Greece | M5.3 | 138 km | 17 km |
| Jun 9, 2015 | 13 km E of Malesína, Greece | M5.3 | 93 km | 13 km |
| Mar 30, 2019 | 2 km SE of Galaxídhion, Greece | M5.3 | 122 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
20 tsunamis recorded within 500 km. Highest wave on record: 6.0 m (20 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1963 | CORINTH GULF | Meteorological | 6.0 m | 2 | 143 km |
| 1817 | CORINTHOS-PATRAS GULF | Earthquake | 5.0 m | — | 140 km |
| 1965 | NORTH CORINTH GULF | Eruption + Earthquake | 3.0 m | 2 | 116 km |
| 1894 | NORTH EVOIKOS GULF | Eruption + Earthquake | 3.0 m | — | 77 km |
| 1861 | CORINTH GULF | Eruption + Earthquake | 2.1 m | — | 146 km |
| 2008 | SW. CORINTH GULF | Unknown | 2.0 m | — | 146 km |
| 1996 | W. CORINTH GULF | Meteorological | 2.0 m | — | 134 km |
| 1932 | NORTH AEGEAN | Earthquake | 2.0 m | 161 | 150 km |
| 1981 | GULF OF CORINTH | Earthquake | 1.3 m | — | 134 km |
| 1995 | GULF OF CORINTH: AIYION | Eruption + Earthquake | 1.0 m | 26 | 122 km |
| 1981 | ATHENS-EASTERN GULF OF CORINTH | Earthquake | 1.0 m | 22 | 129 km |
| 1992 | CORINTH GULF | Earthquake | — | — | 117 km |
| 1984 | CORINTHOS GULF, GREECE | Eruption + Earthquake | — | — | 139 km |
| 1965 | AEGEAN SEA | Earthquake | — | 38 | 92 km |
| 1955 | VOLOS GULF | Earthquake | — | 8 | 15 km |
| 1888 | GULF OF CORINTH | Eruption + Earthquake | — | — | 149 km |
| 1862 | IONIAN SEA | Earthquake | — | — | 139 km |
| 1853 | CENTRAL GREECE (EVOIKOS GULF) | Earthquake | — | 17 | 135 km |
| 1794 | CORINTH GULF | Eruption + Earthquake | — | — | 132 km |
| 1748 | CORINTHOS-PATRAS GULF | Earthquake | — | — | 140 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Methana (199 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Methana | Lava dome(s) | 760 m (2,493 ft) | -258 | 199 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 1.9 in | Coldest |
| February | 43°F (6°C) | 2.0 in | |
| March | 48°F (9°C) | 1.9 in | |
| April | 55°F (13°C) | 1.5 in | |
| May | 64°F (18°C) | 1.4 in | |
| June | 72°F (22°C) | 0.9 in | |
| July | 76°F (25°C) | 0.7 in | Warmest, Driest |
| August | 75°F (24°C) | 0.7 in | |
| September | 69°F (21°C) | 1.0 in | |
| October | 60°F (16°C) | 2.1 in | |
| November | 51°F (11°C) | 2.5 in | Wettest |
| December | 44°F (7°C) | 2.5 in |
Néa Ionía has a seasonal temperature swing of 34°F / from 42°F in January to 76°F in July. Total annual precipitation is 19.2 inches, with November being the wettest month (2.5") and July the driest (0.7").