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Weather & Climate in San Costanzo, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Costanzo enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 41°F in January while summers reach 74°F in July. The area gets 280 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 30.6 inches. The city sits at an elevation of 492 feet.
Temperature
41°F Jan (5°C)
74°F Jul (23°C)
| Annual Average | 56.7°F |
| 5% above US avg | |
| January Average | 41°F (5°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 280 days/yr |
Geography
| Elevation | 492 ft (150 m) |
| Area | 63.1 sq mi (163.4 km²) |
| Population Density | 35/sq mi |
| Coordinates | 43.7672°N, 13.0731°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
1,874 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.2.
| Aug 24, 2016 | 5 km WNW of Accumoli, Italy | M6.2 | 117 km | 4 km |
| Sep 26, 1997 | 3 km SSE of Nocera Umbra, Italy | M6.0 | 79 km | 10 km |
| Jan 18, 2017 | 5 km ESE of Cittareale, Italy | M5.7 | 130 km | 7 km |
| Sep 26, 1997 | 6 km WSW of Serravalle di Chienti, Italy | M5.7 | 82 km | 10 km |
| Jan 18, 2017 | 4 km SE of Cittareale, Italy | M5.6 | 132 km | 10 km |
| Aug 24, 2016 | 5 km S of Castelsantangelo sul Nera, Italy | M5.6 | 103 km | 3 km |
| Oct 14, 1997 | 8 km NNW of Sellano, Italy | M5.5 | 91 km | 10 km |
| Oct 6, 1997 | 6 km E of Valtopina, Italy | M5.5 | 83 km | 10 km |
| Jul 21, 2013 | 3 km ENE of Marcelli, Italy | M5.4 | 56 km | 8 km |
| Apr 9, 2009 | 5 km SE of Capitignano, Italy | M5.4 | 144 km | 15 km |
| Mar 26, 1998 | 1 km E of Esanatoglia, Italy | M5.4 | 58 km | 10 km |
| Sep 14, 2003 | 3 km E of Monterenzio, Italy | M5.3 | 144 km | 10 km |
| Oct 12, 1997 | 2 km NW of Sellano, Italy | M5.3 | 97 km | 10 km |
| Oct 3, 1997 | 3 km ENE of Valtopina, Italy | M5.3 | 80 km | 10 km |
| Jan 18, 2017 | 4 km SW of Accumoli, Italy | M5.3 | 124 km | 10 km |
| Apr 9, 2009 | 2 km ESE of Capitignano, Italy | M5.2 | 141 km | 3 km |
| Apr 3, 1998 | 8 km E of Valfabbrica, Italy | M5.2 | 74 km | 10 km |
| Jan 18, 2017 | 3 km N of Montereale, Italy | M5.2 | 135 km | 7 km |
| May 10, 2000 | 7 km SE of Granarolo, Italy | M5.1 | 105 km | 10 km |
| Sep 18, 2023 | 7 km SE of Marradi, Italy | M5.1 | 115 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
5 tsunamis recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1930 | CENTRAL ADRIATIC | Earthquake | — | 18 | 36 km |
| 1916 | CENTRAL ADRIATIC | Earthquake | — | 4 | 30 km |
| 1875 | ADRIATIC SEA | Earthquake | — | — | 72 km |
| 1672 | CENTRAL ADRIATIC | Earthquake | — | 1,500 | 43 km |
| 1624 | DELTA OF THE PO | Earthquake | — | — | 137 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Vulsini (160 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Vulsini | Caldera | 800 m (2,625 ft) | -104 | 160 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 1.9 in | Coldest |
| February | 42°F (6°C) | 2.1 in | |
| March | 48°F (9°C) | 2.3 in | |
| April | 53°F (12°C) | 2.4 in | |
| May | 62°F (17°C) | 2.2 in | |
| June | 69°F (20°C) | 2.4 in | |
| July | 74°F (23°C) | 1.9 in | Warmest, Driest |
| August | 74°F (23°C) | 2.8 in | |
| September | 67°F (20°C) | 3.2 in | |
| October | 59°F (15°C) | 3.2 in | |
| November | 49°F (10°C) | 3.7 in | Wettest |
| December | 43°F (6°C) | 2.6 in |
San Costanzo has a seasonal temperature swing of 33°F / from 41°F in January to 74°F in July. Total annual precipitation is 30.6 inches, with November being the wettest month (3.7") and July the driest (1.9").