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Weather & Climate in Sperlonga, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Sperlonga enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 43°F in January while summers reach 79°F in July. The area gets 309 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 43.0 inches. The area receives 2.1 inches of snow annually. The city sits at an elevation of 180 feet.
Temperature
43°F Jan (6°C)
79°F Jul (26°C)
| Annual Average | 58.6°F |
| 9% above US avg | |
| January Average | 43°F (6°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 309 days/yr |
Geography
| Elevation | 180 ft (55 m) |
| Area | 70.9 sq mi (183.5 km²) |
| Population Density | 42/sq mi |
| Coordinates | 41.2590°N, 13.4330°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
506 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.3.
| Apr 6, 2009 | 3 km SE of Sassa, Italy | M6.3 | 120 km | 9 km |
| Oct 31, 2002 | 4 km WSW of Larino, Italy | M5.9 | 134 km | 10 km |
| Nov 1, 2002 | 2 km ESE of Casacalenda, Italy | M5.8 | 131 km | 10 km |
| Jan 18, 2017 | 4 km SE of Cittareale, Italy | M5.6 | 149 km | 10 km |
| Apr 7, 2009 | 1 km SW of San Panfilo d'Ocre, Italy | M5.5 | 113 km | 15 km |
| Apr 9, 2009 | 5 km SE of Capitignano, Italy | M5.4 | 136 km | 15 km |
| Feb 26, 1991 | 52 km SW of Anacapri, Italy | M5.3 | 124 km | 401 km |
| Apr 9, 2009 | 2 km ESE of Capitignano, Italy | M5.2 | 140 km | 3 km |
| Jan 18, 2017 | 3 km N of Montereale, Italy | M5.2 | 145 km | 7 km |
| Apr 6, 2009 | 5 km ENE of Pizzoli, Italy | M5.1 | 133 km | 9 km |
| Apr 13, 2009 | 5 km ESE of Capitignano, Italy | M5.0 | 139 km | 8 km |
| Dec 21, 1996 | 90 km SSW of Ventotene, Italy | M4.9 | 140 km | 488 km |
| Apr 6, 2009 | 0 km WSW of Coppito, Italy | M4.9 | 123 km | 10 km |
| Aug 15, 1998 | 3 km NE of Cittaducale, Italy | M4.8 | 133 km | 10 km |
| Apr 7, 2009 | 1 km SW of L'Aquila, Italy | M4.8 | 121 km | 10 km |
| Feb 16, 2013 | 3 km W of Sora, Italy | M4.8 | 52 km | 11 km |
| Apr 6, 2009 | 5 km NW of Scoppito, Italy | M4.8 | 129 km | 5 km |
| Aug 26, 2016 | 2 km S of Amatrice, Italy | M4.8 | 150 km | 11 km |
| Jan 18, 2017 | 4 km WNW of Campotosto, Italy | M4.7 | 148 km | 10 km |
| Jan 21, 1996 | 87 km SSW of Ventotene, Italy | M4.7 | 138 km | 459 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
4 tsunamis recorded within 500 km. Highest wave on record: 5.0 m (16 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1631 | BAY OF NAPLES | Eruption | 5.0 m | 4,000 | 97 km |
| 1906 | TYRRHENIAN SEA | Astronomical | 0.4 m | 350 | 97 km |
| 1805 | CAMPANIA | Earthquake | - | - | 90 km |
| 79 | BAY OF NAPLES | Eruption | - | 2,100 | 97 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Ischia (71 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Ischia | Complex | 789 m (2,589 ft) | 1302 | 71 km |
| Campi Flegrei | Caldera | 458 m (1,503 ft) | 1538 | 76 km |
| Colli Albani | Caldera | 949 m (3,114 ft) | Unknown | 80 km |
| Vesuvius | Stratovolcano | 1,281 m (4,203 ft) | 1944 | 97 km |
| Vulsini | Caldera | 800 m (2,625 ft) | -104 | 194 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 3.8 in | Coldest |
| February | 47°F (8°C) | 3.5 in | |
| March | 51°F (10°C) | 3.1 in | |
| April | 55°F (13°C) | 3.0 in | |
| May | 63°F (17°C) | 1.9 in | |
| June | 70°F (21°C) | 1.1 in | |
| July | 79°F (26°C) | 0.9 in | Warmest, Driest |
| August | 76°F (24°C) | 1.8 in | |
| September | 70°F (21°C) | 3.3 in | |
| October | 62°F (17°C) | 4.8 in | |
| November | 53°F (12°C) | 5.9 in | Wettest |
| December | 48°F (9°C) | 4.9 in |
Sperlonga has a seasonal temperature swing of 36°F / from 43°F in January to 79°F in July. Total annual precipitation is 38.0 inches, with November being the wettest month (5.9") and July the driest (0.9").