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Weather & Climate in Óssa, Greece
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Óssa enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 40°F in January while summers reach 76°F in July. The area gets 302 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 18.7 inches (drier than the 38-inch national average). The city sits at an elevation of 433 feet.
Temperature
40°F Jan (4°C)
76°F Jul (24°C)
| Annual Average | 56.8°F |
| 5% above US avg | |
| January Average | 40°F (4°C) |
| July Average | 76°F (24°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 433 ft (132 m) |
| Area | 43,758.1 sq mi (113,333.5 km²) |
| Population Density | 0/sq mi |
| Coordinates | 39.7463°N, 22.5784°W |
| Timezone | Europe/Athens |
Precipitation & Snow
Air Quality
Earthquake History
3,616 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 | 88 km | 14 km |
| Mar 3, 2021 | 9 km W of Týrnavos, Greece | M6.3 | 34 km | 8 km |
| Dec 21, 1990 | 14 km WNW of Gouménissa, Greece | M6.1 | 142 km | 13 km |
| Mar 4, 2021 | 11 km E of Verdikoússa, Greece | M5.8 | 40 km | 10 km |
| Mar 12, 2021 | 8 km W of Elassóna, Greece | M5.6 | 45 km | 7 km |
| Nov 5, 1997 | 10 km NW of Galaxídhion, Greece | M5.6 | 148 km | 24 km |
| Mar 4, 2021 | 7 km S of Kraniá Elassónas, Greece | M5.5 | 53 km | 10 km |
| Jun 7, 2025 | 6 km WNW of Karyes, Greece | M5.4 | 147 km | 10 km |
| Aug 7, 2013 | 9 km NW of Eláteia, Greece | M5.3 | 118 km | 0 km |
| May 4, 1995 | 9 km NNW of Palaiochóri, Greece | M5.3 | 127 km | 10 km |
| Sep 16, 2013 | 9 km NNW of Eláteia, Greece | M5.3 | 116 km | 8 km |
| Jun 9, 2015 | 13 km E of Malesína, Greece | M5.3 | 143 km | 13 km |
| Mar 3, 2021 | 5 km WSW of Týrnavos, Greece | M5.3 | 31 km | 10 km |
| Jul 17, 1995 | 7 km S of Siátista, Greece | M5.2 | 102 km | 22 km |
| Jun 9, 2003 | 7 km E of Tsarítsani, Greece | M5.2 | 28 km | 18 km |
| May 15, 1995 | 18 km NW of Deskáti, Greece | M5.2 | 85 km | 14 km |
| Feb 14, 2012 | 10 km ENE of Sárti, Greece | M5.2 | 136 km | 24 km |
| Aug 22, 2014 | 12 km S of Kassándreia, Greece | M5.2 | 76 km | 14 km |
| May 17, 1995 | 17 km WSW of Aianí, Greece | M5.2 | 90 km | 19 km |
| Mar 4, 2012 | 8 km ENE of Sárti, Greece | M5.2 | 133 km | 3 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
6 tsunamis recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1894 | NORTH EVOIKOS GULF | Eruption + Earthquake | 3.0 m | — | 125 km |
| 1932 | NORTH AEGEAN | Earthquake | 2.0 m | 161 | 140 km |
| 1965 | AEGEAN SEA | Earthquake | — | 38 | 128 km |
| 1955 | VOLOS GULF | Earthquake | — | 8 | 59 km |
| 1902 | AEGEAN SEA | Earthquake | — | 5 | 125 km |
| -426 | CORINTHOS-PATRAS GULF | Earthquake | — | 2,500 | 95 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (4°C) | 1.6 in | Coldest |
| February | 41°F (5°C) | 1.7 in | |
| March | 46°F (8°C) | 1.7 in | |
| April | 54°F (12°C) | 1.7 in | |
| May | 63°F (17°C) | 1.7 in | |
| June | 72°F (22°C) | 1.1 in | |
| July | 76°F (24°C) | 0.9 in | Warmest |
| August | 74°F (24°C) | 0.9 in | Driest |
| September | 68°F (20°C) | 1.0 in | |
| October | 59°F (15°C) | 2.0 in | |
| November | 49°F (9°C) | 2.4 in | Wettest |
| December | 42°F (5°C) | 2.1 in |
Óssa has a seasonal temperature swing of 36°F / from 40°F in January to 76°F in July. Total annual precipitation is 18.7 inches, with November being the wettest month (2.4") and August the driest (0.9").