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Weather & Climate in Castell'Alfero, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Castell'Alfero enjoys a temperate climate with an average annual temperature of 56°F (14°C). Winters average 38°F in January while summers reach 75°F in July. The area gets 287 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 33.6 inches. The area receives 4.8 inches of snow annually. The city sits at an elevation of 771 feet.
Temperature
38°F Jan (4°C)
75°F Jul (24°C)
| Annual Average | 56.3°F |
| 4% above US avg | |
| January Average | 38°F (4°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 287 days/yr |
Geography
| Elevation | 771 ft (235 m) |
| Area | 77.3 sq mi (200.3 km²) |
| Population Density | 13/sq mi |
| Coordinates | 44.9851°N, 8.2231°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
2,410 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.0.
| Apr 11, 2003 | 1 km SSW of Carezzano Maggiore, Italy | M5.0 | 57 km | 4 km |
| Apr 18, 2005 | 2 km WSW of Marsaglia, Italy | M4.9 | 94 km | 0 km |
| Aug 21, 2000 | 1 km WNW of Oviglio, Italy | M4.9 | 24 km | 10 km |
| Apr 7, 2014 | 7 km SE of Guillestre, France | M4.8 | 127 km | 8 km |
| Jul 18, 2001 | 3 km S of Masio, Italy | M4.7 | 22 km | 0 km |
| Mar 5, 2012 | 3 km NNW of Santo Stefano d'Aveto, Italy | M4.7 | 106 km | 9 km |
| Jan 20, 1994 | 1 km NE of Melle, Italy | M4.6 | 84 km | 10 km |
| Feb 11, 1991 | 5 km ESE of Briançon, France | M4.6 | 120 km | 14 km |
| Aug 13, 2019 | 4 km SW of Stazione Valmozzola, Italy | M4.6 | 140 km | 10 km |
| Apr 19, 2009 | 1 km ENE of Bandito, Italy | M4.5 | 41 km | 40 km |
| Apr 16, 2020 | 2 km SE of Marsaglia, Italy | M4.5 | 99 km | 10 km |
| Jul 17, 1993 | 0 km NNW of Calice Ligure, Italy | M4.5 | 87 km | 5 km |
| Mar 2, 2012 | 8 km NNW of Jausiers, France | M4.5 | 132 km | 10 km |
| Oct 3, 2012 | 2 km N of Melle, Italy | M4.5 | 84 km | 10 km |
| Oct 3, 2012 | 1 km WSW of Lugagnano Val d'Arda, Italy | M4.5 | 127 km | 22 km |
| Feb 24, 1997 | 36 km SE of Cervo, Italy | M4.5 | 144 km | 20 km |
| Jul 17, 1993 | 0 km NNE of Calice Ligure, Italy | M4.4 | 86 km | 5 km |
| Jun 14, 1993 | 3 km S of Vogogna, Italy | M4.4 | 111 km | 10 km |
| Nov 21, 1995 | 1 km SW of Collegno, Italy | M4.4 | 54 km | 22 km |
| Apr 21, 1995 | 4 km ESE of Menton, France | M4.4 | 146 km | 26 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1968 | LIGURIA-COTE D'AZUR | Earthquake | 3.0 m | — | 102 km |
| 1564 | LIGURIA-COTE D'AZUR | Eruption + Earthquake | — | 650 | 131 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (4°C) | 1.6 in | Coldest |
| February | 41°F (5°C) | 1.7 in | |
| March | 48°F (9°C) | 2.3 in | |
| April | 54°F (12°C) | 2.7 in | |
| May | 62°F (16°C) | 3.1 in | |
| June | 68°F (20°C) | 2.0 in | |
| July | 75°F (24°C) | 1.3 in | Warmest, Driest |
| August | 73°F (23°C) | 2.3 in | |
| September | 66°F (19°C) | 2.1 in | |
| October | 56°F (13°C) | 3.2 in | Wettest |
| November | 46°F (8°C) | 2.3 in | |
| December | 39°F (4°C) | 1.5 in |
Castell'Alfero has a seasonal temperature swing of 36°F / from 38°F in January to 75°F in July. Total annual precipitation is 25.9 inches, with October being the wettest month (3.2") and July the driest (1.3").