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Weather & Climate in Ermoúpolis, Greece
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ermoúpolis enjoys a temperate climate with an average annual temperature of 66°F (19°C). Winters average 53°F in January while summers reach 80°F in July. The area gets 307 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 15.8 inches (drier than the 38-inch national average). The city sits at an elevation of 52 feet.
Temperature
53°F Jan (11°C)
80°F Jul (27°C)
| Annual Average | 65.5°F |
| 21% above US avg | |
| January Average | 53°F (11°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 307 days/yr |
Geography
| Elevation | 52 ft (16 m) |
| Area | 4.3 sq mi (11.2 km²) |
| Population Density | 2,628/sq mi |
| Coordinates | 37.4447°N, 24.9429°W |
| Timezone | Europe/Athens |
Precipitation & Snow
Air Quality
Earthquake History
1,518 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.
| Sep 7, 1999 | 5 km WNW of Fylí, Greece | M6.0 | 140 km | 10 km |
| May 21, 2002 | 18 km SW of Adámas, Greece | M5.9 | 109 km | 97 km |
| Aug 29, 2014 | 59 km E of Géfyra, Greece | M5.8 | 139 km | 80 km |
| Apr 4, 2014 | 36 km ESE of Ýdra, Greece | M5.6 | 96 km | 107 km |
| Jun 10, 2001 | 6 km NE of Psará, Greece | M5.6 | 139 km | 33 km |
| Feb 10, 2025 | 26 km SW of Amorgós, Greece | M5.3 | 105 km | 10 km |
| Feb 4, 2025 | 21 km NE of Firá, Greece | M5.3 | 115 km | 14 km |
| Jul 19, 2019 | 1 km NNE of Magoúla, Greece | M5.3 | 144 km | 10 km |
| Feb 9, 2025 | 30 km SW of Amorgós, Greece | M5.2 | 106 km | 10 km |
| Mar 20, 1992 | 9 km SE of Adámas, Greece | M5.2 | 95 km | 14 km |
| Feb 10, 2025 | 28 km NE of Firá, Greece | M5.1 | 110 km | 10 km |
| Feb 12, 2025 | 15 km NE of Oía, Greece | M5.1 | 111 km | 10 km |
| Feb 5, 2025 | 28 km NE of Firá, Greece | M5.1 | 111 km | 10 km |
| Feb 3, 2025 | 28 km SW of Amorgós, Greece | M5.0 | 113 km | 10 km |
| Feb 17, 2025 | 27 km ESE of Íos, Greece | M5.0 | 103 km | 10 km |
| Feb 18, 2025 | 20 km SSW of Amorgós, Greece | M5.0 | 118 km | 10 km |
| Feb 4, 2025 | 29 km SW of Amorgós, Greece | M5.0 | 109 km | 10 km |
| May 12, 2025 | 26 km NE of Oía, Greece | M4.9 | 107 km | 5 km |
| Jun 26, 2009 | 9 km NE of Oía, Greece | M4.9 | 111 km | 10 km |
| Feb 3, 2025 | 24 km NE of Firá, Greece | M4.9 | 115 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
6 tsunamis recorded within 500 km. Highest wave on record: 90.0 m (295 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| -1610 | THERA ISLAND (SANTORINI) | Astronomical | 90.0 m | — | 123 km |
| 1650 | THERA ISLAND (SANTORINI) | Explosion | 30.0 m | 120 | 123 km |
| 1956 | CYCLADES | Eruption + Earthquake | 20.0 m | 56 | 125 km |
| 1956 | AMORGOS ISLAND, AEGEAN ISLANDS | Earthquake | 10.0 m | — | 87 km |
| 1050 | ISLAND OF THIRA | Astronomical | — | — | 123 km |
| 46 | THERA ISLAND (SANTORINI) | Astronomical | — | — | 123 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Milos (94 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Milos | Stratovolcano(es) | 751 m (2,464 ft) | 140 | 94 km |
| Santorini | Shield(s) | 367 m (1,204 ft) | 1950 | 123 km |
| Methana | Lava dome(s) | 760 m (2,493 ft) | -258 | 143 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 53°F (11°C) | 2.7 in | |
| February | 53°F (11°C) | 2.4 in | Coldest |
| March | 56°F (13°C) | 2.0 in | |
| April | 61°F (16°C) | 0.9 in | |
| May | 68°F (20°C) | 0.5 in | |
| June | 77°F (25°C) | 0.2 in | |
| July | 80°F (27°C) | 0.1 in | Warmest, Driest |
| August | 80°F (27°C) | 0.1 in | |
| September | 74°F (24°C) | 0.2 in | |
| October | 68°F (20°C) | 1.6 in | |
| November | 61°F (16°C) | 2.4 in | |
| December | 56°F (13°C) | 2.8 in | Wettest |
Ermoúpolis has a seasonal temperature swing of 28°F / from 53°F in February to 80°F in July. Total annual precipitation is 15.8 inches, with December being the wettest month (2.8") and July the driest (0.1").