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Weather & Climate in Jelsi, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Jelsi enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 44°F in January while summers reach 81°F in July. The area gets 299 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 34.9 inches. The area receives 9.8 inches of snow annually. The city sits at an elevation of 1,903 feet.
Temperature
44°F Jan (7°C)
81°F Jul (27°C)
| Annual Average | 59.9°F |
| 11% above US avg | |
| January Average | 44°F (7°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 299 days/yr |
Geography
| Elevation | 1,903 ft (580 m) |
| Area | 27.8 sq mi (72.1 km²) |
| Population Density | 47/sq mi |
| Coordinates | 41.5170°N, 14.7979°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
658 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.9.
| Oct 31, 2002 | 4 km WSW of Larino, Italy | M5.9 | 31 km | 10 km |
| Nov 1, 2002 | 2 km ESE of Casacalenda, Italy | M5.8 | 24 km | 10 km |
| May 5, 1990 | 6 km NE of Avigliano, Italy | M5.8 | 116 km | 10 km |
| Apr 7, 2009 | 1 km SW of San Panfilo d'Ocre, Italy | M5.5 | 139 km | 15 km |
| Mar 27, 2021 | 55 km N of Peschici, Italy | M5.5 | 146 km | 7 km |
| Sep 30, 1995 | 3 km S of Ischitella, Italy | M5.2 | 99 km | 25 km |
| May 26, 1991 | 3 km E of Avigliano, Italy | M5.1 | 119 km | 8 km |
| Mar 14, 2025 | 14 km NNE of Lesina, Italy | M5.0 | 74 km | 10 km |
| Feb 16, 2013 | 3 km W of Sora, Italy | M4.8 | 104 km | 11 km |
| Apr 7, 2009 | 1 km SW of L'Aquila, Italy | M4.8 | 148 km | 10 km |
| Mar 28, 2023 | 2 km NNW of Montagano, Italy | M4.7 | 20 km | 7 km |
| Feb 1, 1990 | 10 km NNE of Isole Tremiti, Italy | M4.7 | 99 km | 10 km |
| May 29, 2006 | 6 km SE of Carpino, Italy | M4.7 | 97 km | 31 km |
| Sep 21, 2019 | 4 km WNW of Agropoli, Italy | M4.7 | 128 km | 300 km |
| Apr 3, 1996 | 0 km NNE of Muro Lucano, Italy | M4.7 | 102 km | 10 km |
| Mar 19, 1997 | 1 km SSE of Sepino, Italy | M4.6 | 20 km | 10 km |
| Apr 15, 2021 | 59 km N of Peschici, Italy | M4.6 | 150 km | 19 km |
| Sep 27, 2012 | 0 km E of Sant'Arcangelo Trimonte, Italy | M4.6 | 41 km | 6 km |
| Feb 20, 2008 | 3 km W of Belmonte Castello, Italy | M4.6 | 85 km | 9 km |
| May 5, 1990 | 1 km W of Pietragalla, Italy | M4.6 | 123 km | 13 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
7 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 | 83 km |
| 1906 | TYRRHENIAN SEA | Astronomical | 0.4 m | 350 | 83 km |
| 1805 | CAMPANIA | Earthquake | - | - | 28 km |
| 1731 | TYRRHENIAN SEA | Earthquake | - | 3,600 | 59 km |
| 1627 | GARGANO PENINSULA | Earthquake | - | 5,000 | 52 km |
| 1562 | REGGIO DI CALABRIA | Earthquake | - | - | 128 km |
| 79 | BAY OF NAPLES | Eruption | - | 2,100 | 83 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Vesuvius (83 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Vesuvius | Stratovolcano | 1,281 m (4,203 ft) | 1944 | 83 km |
| Campi Flegrei | Caldera | 458 m (1,503 ft) | 1538 | 95 km |
| Ischia | Complex | 789 m (2,589 ft) | 1302 | 116 km |
| Colli Albani | Caldera | 949 m (3,114 ft) | Unknown | 176 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (7°C) | 2.0 in | |
| February | 41°F (5°C) | 1.9 in | Coldest |
| March | 45°F (7°C) | 1.8 in | |
| April | 50°F (10°C) | 1.9 in | |
| May | 59°F (15°C) | 1.6 in | |
| June | 66°F (19°C) | 1.2 in | |
| July | 81°F (27°C) | 1.1 in | Warmest, Driest |
| August | 72°F (22°C) | 1.4 in | |
| September | 65°F (19°C) | 1.8 in | |
| October | 57°F (14°C) | 2.1 in | |
| November | 48°F (9°C) | 2.8 in | Wettest |
| December | 44°F (6°C) | 2.2 in |
Jelsi has a seasonal temperature swing of 39°F / from 41°F in February to 81°F in July. Total annual precipitation is 21.7 inches, with November being the wettest month (2.8") and July the driest (1.1").