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Weather & Climate in Mégara, Greece
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mégara enjoys a temperate climate with an average annual temperature of 67°F (19°C). Winters average 52°F in January while summers reach 88°F in July. The area gets 340 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 16.7 inches (drier than the 38-inch national average). The area receives 3.0 inches of snow annually. The city sits at an elevation of 115 feet.
Temperature
52°F Jan (11°C)
88°F Jul (31°C)
| Annual Average | 66.9°F |
| 24% above US avg | |
| January Average | 52°F (11°C) |
| July Average | 88°F (31°C) |
| Sunny Days | 340 days/yr |
Geography
| Elevation | 115 ft (35 m) |
| Area | 124.4 sq mi (322.2 km²) |
| Population Density | 189/sq mi |
| Coordinates | 37.9947°N, 23.3432°W |
| Timezone | Europe/Athens |
Precipitation & Snow
Air Quality
Earthquake History
5,144 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.5.
| Jun 15, 1995 | 8 km WNW of Galaxídhion, Greece | M6.5 | 103 km | 14 km |
| Jul 26, 2001 | 32 km WNW of Skýros, Greece | M6.5 | 142 km | 10 km |
| Jan 6, 2008 | 15 km WNW of Leonídio, Greece | M6.2 | 104 km | 75 km |
| Sep 7, 1999 | 5 km WNW of Fylí, Greece | M6.0 | 27 km | 10 km |
| Nov 18, 1992 | 10 km SE of Galaxídhion, Greece | M5.9 | 85 km | 15 km |
| Aug 29, 2014 | 59 km E of Géfyra, Greece | M5.8 | 149 km | 80 km |
| Mar 18, 1993 | 11 km NNE of Témeni, Greece | M5.8 | 111 km | 59 km |
| Jul 14, 1993 | 2 km SE of Pátra, Greece | M5.6 | 141 km | 23 km |
| Apr 4, 2014 | 36 km ESE of Ýdra, Greece | M5.6 | 92 km | 107 km |
| Nov 5, 1997 | 10 km NW of Galaxídhion, Greece | M5.6 | 105 km | 24 km |
| Mar 1, 2004 | 6 km ESE of Arfará, Greece | M5.6 | 144 km | 9 km |
| Feb 17, 2021 | 11 km N of Kamárai, Greece | M5.5 | 124 km | 5 km |
| Jan 18, 2010 | 11 km E of Náfpaktos, Greece | M5.5 | 129 km | 1 km |
| Jan 22, 2010 | 14 km NNE of Kamárai, Greece | M5.4 | 123 km | 5 km |
| Jun 15, 1995 | 3 km E of Galaxídhion, Greece | M5.4 | 92 km | 10 km |
| Nov 4, 1993 | 8 km N of Kamárai, Greece | M5.3 | 125 km | 17 km |
| Feb 15, 2016 | 14 km E of Kréstena, Greece | M5.3 | 145 km | 29 km |
| Jun 9, 2015 | 13 km E of Malesína, Greece | M5.3 | 70 km | 13 km |
| Jul 19, 2019 | 1 km NNE of Magoúla, Greece | M5.3 | 19 km | 10 km |
| Mar 30, 2019 | 2 km SE of Galaxídhion, Greece | M5.3 | 93 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 | 121 km |
| 1817 | CORINTHOS-PATRAS GULF | Earthquake | 5.0 m | - | 114 km |
| 1965 | NORTH CORINTH GULF | Eruption + Earthquake | 3.0 m | 2 | 82 km |
| 1894 | NORTH EVOIKOS GULF | Eruption + Earthquake | 3.0 m | - | 81 km |
| 1861 | CORINTH GULF | Eruption + Earthquake | 2.1 m | - | 103 km |
| 2008 | SW. CORINTH GULF | Unknown | 2.0 m | - | 103 km |
| 1996 | W. CORINTH GULF | Meteorological | 2.0 m | - | 118 km |
| 1981 | GULF OF CORINTH | Earthquake | 1.3 m | - | 24 km |
| 1995 | GULF OF CORINTH: AIYION | Eruption + Earthquake | 1.0 m | 26 | 103 km |
| 1981 | ATHENS-EASTERN GULF OF CORINTH | Earthquake | 1.0 m | 22 | 44 km |
| 1928 | CORINTHOS-PATRAS GULF | Earthquake | 0.6 m | 20 | 30 km |
| 1992 | CORINTH GULF | Earthquake | - | - | 77 km |
| 1984 | CORINTHOS GULF, GREECE | Eruption + Earthquake | - | - | 113 km |
| 1888 | GULF OF CORINTH | Eruption + Earthquake | - | - | 111 km |
| 1862 | IONIAN SEA | Earthquake | - | - | 100 km |
| 1853 | CENTRAL GREECE (EVOIKOS GULF) | Earthquake | - | 17 | 32 km |
| 1794 | CORINTH GULF | Eruption + Earthquake | - | - | 97 km |
| 1748 | CORINTHOS-PATRAS GULF | Earthquake | - | - | 114 km |
| 1402 | GULF OF CORINTH | Earthquake | - | - | 83 km |
| -373 | CORINTHOS-PATRAS GULF | Eruption + Earthquake | - | - | 100 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Methana (42 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Methana | Lava dome(s) | 760 m (2,493 ft) | -258 | 42 km |
| Milos | Stratovolcano(es) | 751 m (2,464 ft) | 140 | 174 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 52°F (11°C) | 2.2 in | |
| February | 49°F (9°C) | 2.2 in | Coldest |
| March | 52°F (11°C) | 2.2 in | |
| April | 58°F (15°C) | 1.3 in | |
| May | 67°F (19°C) | 0.8 in | |
| June | 76°F (24°C) | 0.4 in | |
| July | 88°F (31°C) | 0.3 in | Warmest, Driest |
| August | 80°F (26°C) | 0.4 in | |
| September | 74°F (23°C) | 0.5 in | |
| October | 65°F (19°C) | 1.9 in | |
| November | 57°F (14°C) | 2.6 in | |
| December | 52°F (11°C) | 3.0 in | Wettest |
Mégara has a seasonal temperature swing of 39°F / from 49°F in February to 88°F in July. Total annual precipitation is 17.5 inches, with December being the wettest month (3.0") and July the driest (0.3").