All Countries
Weather & Climate in Giuliano di Roma, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Giuliano di Roma 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 1,191 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 | 1,191 ft (363 m) |
| Area | 23.8 sq mi (61.5 km²) |
| Population Density | 38/sq mi |
| Coordinates | 41.5393°N, 13.2803°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
732 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 | 89 km | 9 km |
| Aug 24, 2016 | 5 km WNW of Accumoli, Italy | M6.2 | 132 km | 4 km |
| Oct 31, 2002 | 4 km WSW of Larino, Italy | M5.9 | 135 km | 10 km |
| Nov 1, 2002 | 2 km ESE of Casacalenda, Italy | M5.8 | 134 km | 10 km |
| Jan 18, 2017 | 5 km ESE of Cittareale, Italy | M5.7 | 118 km | 7 km |
| Aug 24, 2016 | 5 km S of Castelsantangelo sul Nera, Italy | M5.6 | 145 km | 3 km |
| Jan 18, 2017 | 4 km SE of Cittareale, Italy | M5.6 | 117 km | 10 km |
| Apr 7, 2009 | 1 km SW of San Panfilo d'Ocre, Italy | M5.5 | 83 km | 15 km |
| Apr 9, 2009 | 5 km SE of Capitignano, Italy | M5.4 | 105 km | 15 km |
| Jan 18, 2017 | 4 km SW of Accumoli, Italy | M5.3 | 125 km | 10 km |
| Apr 9, 2009 | 2 km ESE of Capitignano, Italy | M5.2 | 108 km | 3 km |
| Jan 18, 2017 | 3 km N of Montereale, Italy | M5.2 | 113 km | 7 km |
| Apr 6, 2009 | 5 km ENE of Pizzoli, Italy | M5.1 | 102 km | 9 km |
| Apr 13, 2009 | 5 km ESE of Capitignano, Italy | M5.0 | 108 km | 8 km |
| Apr 6, 2009 | 0 km WSW of Coppito, Italy | M4.9 | 92 km | 10 km |
| Aug 15, 1998 | 3 km NE of Cittaducale, Italy | M4.8 | 100 km | 10 km |
| Feb 16, 2013 | 3 km W of Sora, Italy | M4.8 | 31 km | 11 km |
| Aug 26, 2016 | 2 km S of Amatrice, Italy | M4.8 | 118 km | 11 km |
| Apr 7, 2009 | 1 km SW of L'Aquila, Italy | M4.8 | 90 km | 10 km |
| Apr 6, 2009 | 5 km NW of Scoppito, Italy | M4.8 | 97 km | 5 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 | 125 km |
| 1906 | TYRRHENIAN SEA | Astronomical | 0.4 m | 350 | 125 km |
| 1805 | CAMPANIA | Earthquake | — | — | 99 km |
| 79 | BAY OF NAPLES | Eruption | — | 2,100 | 125 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Colli Albani (53 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Colli Albani | Caldera | 949 m (3,114 ft) | Unknown | 53 km |
| Ischia | Complex | 789 m (2,589 ft) | 1302 | 104 km |
| Campi Flegrei | Caldera | 458 m (1,503 ft) | 1538 | 107 km |
| Vesuvius | Stratovolcano | 1,281 m (4,203 ft) | 1944 | 125 km |
| Vulsini | Caldera | 800 m (2,625 ft) | -104 | 162 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 3.7 in | Coldest |
| February | 44°F (7°C) | 3.7 in | |
| March | 48°F (9°C) | 3.2 in | |
| April | 52°F (11°C) | 3.8 in | |
| May | 61°F (16°C) | 2.6 in | |
| June | 68°F (20°C) | 1.7 in | |
| July | 79°F (26°C) | 1.6 in | Warmest, Driest |
| August | 74°F (23°C) | 2.1 in | |
| September | 67°F (20°C) | 3.7 in | |
| October | 59°F (15°C) | 5.2 in | |
| November | 50°F (10°C) | 6.3 in | Wettest |
| December | 44°F (7°C) | 5.0 in |
Giuliano di Roma has a seasonal temperature swing of 36°F / from 43°F in January to 79°F in July. Total annual precipitation is 42.6 inches, with November being the wettest month (6.3") and July the driest (1.6").