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Weather & Climate in Aviano-Castello, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Aviano-Castello enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 43°F in January while summers reach 76°F in July. The area gets 285 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 51.8 inches (wetter than the 38-inch national average). The area receives 1.5 inches of snow annually. The city sits at an elevation of 522 feet.
Temperature
43°F Jan (6°C)
76°F Jul (25°C)
| Annual Average | 58.6°F |
| 9% above US avg | |
| January Average | 43°F (6°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 285 days/yr |
Geography
| Elevation | 522 ft (159 m) |
| Area | 52.6 sq mi (136.3 km²) |
| Population Density | 104/sq mi |
| Coordinates | 46.0676°N, 12.5832°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
804 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.6.
| Apr 12, 1998 | 5 km E of Kobarid, Slovenia | M5.6 | 85 km | 10 km |
| Mar 13, 1998 | 4 km NW of Ilirska Bistrica, Slovenia | M5.2 | 136 km | 10 km |
| Jul 12, 2004 | 7 km NE of Kobarid, Slovenia | M5.2 | 85 km | 8 km |
| May 22, 1995 | 6 km NNW of Ilirska Bistrica, Slovenia | M4.9 | 137 km | 27 km |
| Nov 11, 1990 | 5 km ENE of Cerkno, Slovenia | M4.7 | 114 km | 22 km |
| Jul 17, 2001 | 3 km NNE of Rifiano, Italy | M4.7 | 129 km | 10 km |
| Feb 14, 2002 | 4 km SSW of Moggio di Sotto, Italy | M4.7 | 57 km | 10 km |
| Jun 2, 2002 | 6 km SSE of Pivka, Slovenia | M4.6 | 137 km | 10 km |
| May 6, 1998 | 6 km NNW of Tolmin, Slovenia | M4.6 | 89 km | 10 km |
| Oct 5, 1991 | 0 km W of Nimis, Italy | M4.5 | 55 km | 10 km |
| Jun 9, 2012 | 5 km NE of Lamosano, Italy | M4.5 | 19 km | 7 km |
| May 28, 1998 | 3 km WSW of Osoppo, Italy | M4.5 | 40 km | 10 km |
| Apr 22, 2014 | 7 km SE of Pivka, Slovenia | M4.5 | 138 km | 5 km |
| Apr 24, 2005 | 0 km NNW of Ilirska Bistrica, Slovenia | M4.4 | 140 km | 10 km |
| Jan 30, 2015 | 4 km W of Moggio di Sotto, Italy | M4.4 | 57 km | 6 km |
| May 13, 1999 | 2 km NW of Clodig, Italy | M4.4 | 77 km | 10 km |
| Mar 27, 2024 | 6 km ENE of Tramonti di Sopra, Italy | M4.3 | 37 km | 10 km |
| Aug 29, 2004 | 1 km S of Enemonzo-Quinis, Italy | M4.3 | 43 km | 11 km |
| Oct 24, 1994 | 3 km ESE of Piazza, Italy | M4.3 | 109 km | 18 km |
| Oct 2, 1993 | 4 km WNW of Bordano, Italy | M4.3 | 47 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 235.0 m (771 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1963 | VAJONT DAM, VAJONT RIVER | Meteorological | 235.0 m | 2,000 | 30 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 2.4 in | |
| February | 36°F (2°C) | 2.1 in | Driest |
| March | 43°F (6°C) | 3.1 in | |
| April | 49°F (10°C) | 3.9 in | |
| May | 58°F (15°C) | 4.5 in | |
| June | 65°F (18°C) | 5.0 in | Wettest |
| July | 76°F (25°C) | 4.1 in | Warmest |
| August | 69°F (20°C) | 4.0 in | |
| September | 62°F (16°C) | 4.4 in | |
| October | 52°F (11°C) | 4.8 in | |
| November | 42°F (6°C) | 3.9 in | |
| December | 35°F (2°C) | 2.8 in | Coldest |
Aviano-Castello has a seasonal temperature swing of 41°F / from 35°F in December to 76°F in July. Total annual precipitation is 45.1 inches, with June being the wettest month (5.0") and February the driest (2.1").