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Weather & Climate in San Giovanni Gemini, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Giovanni Gemini enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 46°F in January while summers reach 74°F in July. The area gets 298 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 20.7 inches (drier than the 38-inch national average). The city sits at an elevation of 2,198 feet.
Temperature
46°F Jan (8°C)
74°F Jul (23°C)
| Annual Average | 58.7°F |
| 9% above US avg | |
| January Average | 46°F (8°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 298 days/yr |
Geography
| Elevation | 2,198 ft (670 m) |
| Area | 12.7 sq mi (32.8 km²) |
| Population Density | 613/sq mi |
| Coordinates | 37.6279°N, 13.6436°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
904 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.
| Sep 6, 2002 | 34 km NNE of Santa Flavia, Italy | M6.0 | 84 km | 5 km |
| May 5, 2004 | 5 km S of Leni, Italy | M5.5 | 142 km | 229 km |
| Sep 27, 2002 | 39 km NNE of Santa Flavia, Italy | M5.3 | 90 km | 5 km |
| Feb 7, 2025 | 39 km WSW of Leni, Italy | M5.2 | 115 km | 10 km |
| Nov 25, 2001 | 6 km SW of Polizzi Generosa, Italy | M4.9 | 31 km | 10 km |
| Jun 26, 1993 | 1 km WNW of Tusa, Italy | M4.9 | 65 km | 14 km |
| Sep 14, 1998 | 40 km N of Santa Flavia, Italy | M4.9 | 93 km | 10 km |
| Jan 17, 1998 | 28 km NNE of San Vito Lo Capo, Italy | M4.9 | 109 km | 10 km |
| Sep 7, 2009 | 62 km N of Cefalù, Italy | M4.8 | 115 km | 20 km |
| May 29, 1995 | 22 km W of Favignana, Italy | M4.8 | 142 km | 12 km |
| May 6, 1994 | 2 km NNE of Alimena, Italy | M4.8 | 43 km | 46 km |
| Mar 28, 1990 | 2 km NNW of San Giorgio, Italy | M4.7 | 129 km | 37 km |
| Dec 14, 1996 | 1 km SW of Sclafani Bagni, Italy | M4.7 | 27 km | 40 km |
| Apr 6, 1992 | 5 km NNE of Troina / Draginai, Italy | M4.7 | 89 km | 22 km |
| Jun 20, 1998 | 28 km NNW of San Vito Lo Capo, Italy | M4.7 | 123 km | 10 km |
| Sep 28, 2002 | 43 km NNE of Santa Flavia, Italy | M4.6 | 94 km | 5 km |
| Jan 4, 2013 | 3 km NNE of Cesarò, Italy | M4.6 | 99 km | 10 km |
| Sep 6, 2002 | 40 km NNE of Santa Flavia, Italy | M4.5 | 90 km | 4 km |
| Jun 21, 1998 | 29 km NNW of San Vito Lo Capo, Italy | M4.5 | 123 km | 10 km |
| Sep 20, 2002 | Sicily, Italy | M4.5 | 92 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
8 tsunamis recorded within 500 km. Highest wave on record: 12.0 m (39 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1693 | ISLAND OF SICILY | Earthquake | 12.0 m | 54,000 | 133 km |
| 1988 | LA FOSSA VOLCANO, VULCANO IS. | Meteorological | 2.0 m | — | 144 km |
| 1818 | EASTERN SICILY | Earthquake | — | 72 | 131 km |
| 1726 | NORTHERN SICILY | Earthquake | — | 250 | 60 km |
| 1172 | ISLAND OF SICILY | Earthquake | — | — | 126 km |
| 1169 | EASTERN SICILY | Earthquake | — | 16,000 | 128 km |
| 1169 | CALABRIAN ARC | Astronomical | — | — | 120 km |
| 963 | SICILY | Earthquake | — | — | 126 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
7 volcanoes within 200 km. Closest: Campi Flegrei del Mar di Sicilia (102 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Campi Flegrei del Mar di Sicilia | Submarine | -8 m (-26 ft) | 1867 | 102 km |
| Etna | Stratovolcano(es) | 3,295 m (10,810 ft) | 2020 | 120 km |
| Vulcano | Stratovolcano(es) | 500 m (1,640 ft) | 1890 | 144 km |
| Lipari | Stratovolcano(es) | 590 m (1,936 ft) | 1230 | 148 km |
| Panarea | Stratovolcano | 399 m (1,309 ft) | Unknown | 168 km |
| Pantelleria | Shield | 836 m (2,743 ft) | 1891 | 173 km |
| Stromboli | Stratovolcano | 924 m (3,031 ft) | 2020 | 188 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 46°F (8°C) | 2.6 in | Coldest |
| February | 46°F (8°C) | 2.1 in | |
| March | 48°F (9°C) | 1.8 in | |
| April | 53°F (11°C) | 1.9 in | |
| May | 61°F (16°C) | 1.0 in | |
| June | 69°F (20°C) | 0.3 in | |
| July | 74°F (23°C) | 0.2 in | Driest |
| August | 75°F (24°C) | 0.5 in | Warmest |
| September | 69°F (21°C) | 1.6 in | |
| October | 62°F (17°C) | 3.0 in | |
| November | 54°F (12°C) | 2.8 in | |
| December | 49°F (9°C) | 3.0 in | Wettest |
San Giovanni Gemini has a seasonal temperature swing of 28°F / from 46°F in January to 75°F in August. Total annual precipitation is 20.7 inches, with December being the wettest month (3.0") and July the driest (0.2").