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Porto Ercole, Italy

Full City Profile

1.9 /5.0
D Poor
2,676 Population 24/sq mi density
10 ft Elevation 3 meters
59°F Avg Temperature 15°C
D
Overall
1.9 / 5.0
Below average overall score based on economy, affordability, safety and education
D
Economy
1.9 / 5.0
$22,236 median income, 12.8% unemployment
Porto Ercole 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. Annual precipitation totals 21.0 inches. The area receives 0.0 inches of snow annually.

Temperature

46°F Jan (8°C) 74°F Jul (23°C)
Annual Average59.0°F
9% above US avg
January Average46°F (8°C)
July Average74°F (23°C)
Sunny Days298 days/yr

Geography

Elevation10 ft (3 m)
Area113.3 sq mi (293.4 km²)
Population Density24/sq mi
Coordinates42.4017°N, 11.2052°W
TimezoneEurope/Rome

Precipitation & Snow

Annual Rainfall 21.0"
45% below US avg
Snowfall 0.0"
Wettest Month (Nov) 2.87"
Driest Month (Jul) 0.39"

Air Quality

Earthquake History

618 earthquakes (M2.5+) within 150 km since 1990. Strongest: M5.3. Most recent: M2.7 on May 8, 2025.

Oct 3, 1997 3 km ENE of Valtopina, Italy M5.3 150 km
Oct 12, 1997 2 km NW of Sellano, Italy M5.3 149 km
Apr 3, 1998 8 km E of Valfabbrica, Italy M5.2 149 km
Jun 5, 1993 7 km ESE of Valfabbrica, Italy M4.9 144 km
Jun 22, 2000 8 km WSW of Cipolleto, Italy M4.8 144 km
Aug 15, 1998 3 km NE of Cittaducale, Italy M4.8 146 km
Sep 3, 1997 6 km ESE of Valtopina, Italy M4.7 150 km
Oct 4, 1997 7 km NW of Sellano, Italy M4.6 147 km
Nov 7, 2001 56 km ENE of Porto Cervo, Italy M4.6 147 km
Sep 27, 1997 7 km ESE of Valtopina, Italy M4.5 150 km
Mar 9, 2023 2 km S of Umbertide, Italy M4.5 135 km
Mar 21, 1998 10 km NW of Sellano, Italy M4.5 146 km
Oct 4, 1997 2 km NW of Sellano, Italy M4.5 149 km
Oct 19, 1997 8 km ENE of Foligno, Italy M4.5 145 km
Apr 1, 2000 1 km SSW of Piancastagnaio, Italy M4.5 63 km
Oct 15, 1997 5 km NNW of Sellano, Italy M4.5 150 km
Sep 27, 1997 1 km ENE of Valtopina, Italy M4.5 147 km
Nov 6, 1997 0 km S of Rocca Priora, Italy M4.5 147 km
Oct 17, 1997 central Italy M4.5 150 km
Jun 11, 2000 1 km NW of Costano, Italy M4.4 130 km
Source: USGS (M2.5+, 1990–2025)

Tsunami History

4 tsunamis recorded within 500 km.

Year Location Cause Max Wave Deaths Distance
1846 LIVORNO Earthquake 56 122 km
1846 TUSCANY Earthquake 135 km
1742 LIVORNO Earthquake 147 km
1646 LIVORNO Earthquake 147 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Vulsini (63 km).

Name Type Elevation Last Eruption Distance
Vulsini Caldera 800 m (2,625 ft) -104 63 km
Colli Albani Caldera 949 m (3,114 ft) Unknown 144 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 46°F (8°C) 2.2 in Coldest
February 47°F (8°C) 1.9 in
March 50°F (10°C) 1.8 in
April 54°F (12°C) 1.6 in
May 62°F (17°C) 1.4 in
June 69°F (20°C) 0.8 in
July 74°F (23°C) 0.4 in Driest
August 75°F (24°C) 1.1 in Warmest
September 69°F (21°C) 2.2 in
October 62°F (16°C) 2.7 in
November 53°F (12°C) 2.9 in Wettest
December 48°F (9°C) 2.2 in

Porto Ercole has a seasonal temperature swing of 29°F / from 46°F in January to 75°F in August. Total annual precipitation is 21.0 inches, with November being the wettest month (2.9") and July the driest (0.4").

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