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Weather & Climate in Isola del Giglio, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Isola del Giglio enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 48°F in January while summers reach 73°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 19.5 inches (drier than the 38-inch national average). The city sits at an elevation of 1,532 feet.
Temperature
48°F Jan (9°C)
73°F Jul (23°C)
| Annual Average | 59.1°F |
| 9% above US avg | |
| January Average | 48°F (9°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 301 days/yr |
Geography
| Elevation | 1,532 ft (467 m) |
| Area | 26.7 sq mi (69.1 km²) |
| Population Density | 53/sq mi |
| Coordinates | 42.3579°N, 10.9072°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
205 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.
| Nov 7, 2001 | 56 km ENE of Porto Cervo, Italy | M4.6 | 129 km | 10 km |
| Apr 1, 2000 | 1 km SSW of Piancastagnaio, Italy | M4.5 | 83 km | 10 km |
| May 12, 1997 | 3 km W of Massa Martana, Italy | M4.4 | 137 km | 5 km |
| May 30, 2016 | 1 km WNW of Castel Giorgio, Italy | M4.4 | 95 km | 15 km |
| Dec 16, 2000 | 9 km N of Terni, Italy | M4.3 | 147 km | 10 km |
| Dec 15, 2009 | 6 km SW of Pila, Italy | M4.3 | 133 km | 9 km |
| Sep 13, 2015 | 3 km WNW of Panzano in Chianti, Italy | M4.2 | 137 km | 4 km |
| May 1, 2018 | 3 km SSW of Radicondoli, Italy | M4.1 | 98 km | 10 km |
| Apr 9, 1995 | 30 km WNW of Capraia Isola, Italy | M4.1 | 146 km | 10 km |
| May 20, 1998 | 2 km ENE of Suvereto, Italy | M4.0 | 82 km | 10 km |
| Nov 17, 1993 | 21 km SSW of Castiglione della Pescaia, Italy | M4.0 | 31 km | 10 km |
| Mar 4, 2015 | 4 km NW of Sambuca, Italy | M4.0 | 140 km | 9 km |
| Aug 6, 1993 | 4 km ESE of Pomarance, Italy | M3.9 | 103 km | 30 km |
| Apr 26, 1994 | 1 km ESE of Gualdo Cattaneo, Italy | M3.9 | 149 km | 15 km |
| Mar 27, 1991 | 66 km WSW of Fiumicino, Italy | M3.8 | 116 km | 18 km |
| Mar 25, 1993 | 1 km NNW of Torri in Sabina, Italy | M3.7 | 142 km | 10 km |
| Mar 21, 1994 | 8 km NE of Monteverdi Marittimo, Italy | M3.7 | 97 km | 5 km |
| Jul 26, 1997 | 6 km SSW of Todi, Italy | M3.7 | 128 km | 10 km |
| Jul 27, 1997 | 3 km SE of Bettona, Italy | M3.7 | 149 km | 10 km |
| Feb 7, 1992 | 3 km NE of San Lorenzo Nuovo, Italy | M3.7 | 93 km | 6 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
4 tsunamis recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1846 | LIVORNO | Earthquake | - | 56 | 119 km |
| 1846 | TUSCANY | Earthquake | - | - | 131 km |
| 1742 | LIVORNO | Earthquake | - | - | 139 km |
| 1646 | LIVORNO | Earthquake | - | - | 141 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Vulsini (88 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Vulsini | Caldera | 800 m (2,625 ft) | -104 | 88 km |
| Colli Albani | Caldera | 949 m (3,114 ft) | Unknown | 164 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 48°F (9°C) | 2.2 in | |
| February | 48°F (9°C) | 1.8 in | Coldest |
| March | 50°F (10°C) | 1.8 in | |
| April | 54°F (12°C) | 1.4 in | |
| May | 61°F (16°C) | 1.2 in | |
| June | 68°F (20°C) | 0.6 in | |
| July | 73°F (23°C) | 0.3 in | Driest |
| August | 74°F (23°C) | 1.0 in | Warmest |
| September | 69°F (20°C) | 1.9 in | |
| October | 62°F (17°C) | 2.6 in | |
| November | 54°F (12°C) | 2.6 in | Wettest |
| December | 49°F (10°C) | 2.2 in |
Isola del Giglio has a seasonal temperature swing of 27°F / from 48°F in February to 74°F in August. Total annual precipitation is 19.5 inches, with November being the wettest month (2.6") and July the driest (0.3").