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Weather & Climate in Riolo Terme, Italy
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Riolo Terme enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 42°F in January while summers reach 79°F in July. The area gets 294 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 35.7 inches. The area receives 6.3 inches of snow annually. The city sits at an elevation of 322 feet.
Temperature
42°F Jan (5°C)
79°F Jul (26°C)
| Annual Average | 59.1°F |
| 9% above US avg | |
| January Average | 42°F (5°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 294 days/yr |
Geography
| Elevation | 322 ft (98 m) |
| Area | 21.5 sq mi (55.6 km²) |
| Population Density | 202/sq mi |
| Coordinates | 44.2761°N, 11.7272°W |
| Timezone | Europe/Rome |
Precipitation & Snow
Air Quality
Earthquake History
1,969 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.
| May 20, 2012 | 4 km NNE of Massa Finalese, Italy | M6.0 | 79 km | 6 km |
| May 29, 2012 | 1 km ENE of Medolla, Italy | M5.8 | 82 km | 10 km |
| May 29, 2012 | 2 km NE of San Possidonio, Italy | M5.5 | 89 km | 7 km |
| Oct 15, 1996 | 2 km N of Correggio, Italy | M5.4 | 95 km | 10 km |
| Sep 14, 2003 | 3 km E of Monterenzio, Italy | M5.3 | 23 km | 10 km |
| Jun 21, 2013 | 6 km WSW of Minucciano, Italy | M5.2 | 128 km | 5 km |
| Apr 3, 1998 | 8 km E of Valfabbrica, Italy | M5.2 | 146 km | 10 km |
| May 10, 2000 | 7 km SE of Granarolo, Italy | M5.1 | 22 km | 10 km |
| Sep 18, 2023 | 7 km SE of Marradi, Italy | M5.1 | 29 km | 10 km |
| Jun 3, 2012 | 3 km ENE of Novi di Modena, Italy | M5.1 | 93 km | 9 km |
| May 29, 2012 | 2 km W of San Possidonio, Italy | M5.1 | 90 km | 10 km |
| May 20, 2012 | 1 km SSW of Vigarano Mainarda, Italy | M5.0 | 65 km | 5 km |
| Nov 2, 2002 | 4 km N of Sant'Alberto, Italy | M5.0 | 49 km | 10 km |
| Jan 27, 2012 | 4 km SE of Berceto, Italy | M5.0 | 137 km | 60 km |
| Jan 25, 2013 | 3 km ENE of Castiglione di Garfagnana, Italy | M4.9 | 102 km | 16 km |
| May 20, 2012 | 2 km ENE of Medolla, Italy | M4.9 | 82 km | 10 km |
| Jul 17, 2011 | 0 km W of Sermide, Italy | M4.9 | 88 km | 6 km |
| Jun 5, 1993 | 7 km ESE of Valfabbrica, Italy | M4.9 | 150 km | 8 km |
| Jun 30, 2013 | 6 km SW of Minucciano, Italy | M4.9 | 127 km | 10 km |
| Jan 25, 2012 | 1 km N of Poviglio, Italy | M4.9 | 114 km | 33 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
9 tsunamis recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1930 | CENTRAL ADRIATIC | Earthquake | — | 18 | 147 km |
| 1916 | CENTRAL ADRIATIC | Earthquake | — | 4 | 106 km |
| 1875 | ADRIATIC SEA | Earthquake | — | — | 54 km |
| 1846 | LIVORNO | Earthquake | — | 56 | 133 km |
| 1846 | TUSCANY | Earthquake | — | — | 131 km |
| 1742 | LIVORNO | Earthquake | — | — | 150 km |
| 1672 | CENTRAL ADRIATIC | Earthquake | — | 1,500 | 78 km |
| 1646 | LIVORNO | Earthquake | — | — | 139 km |
| 1624 | DELTA OF THE PO | Earthquake | — | — | 37 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Vulsini (187 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Vulsini | Caldera | 800 m (2,625 ft) | -104 | 187 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (5°C) | 2.0 in | |
| February | 40°F (5°C) | 2.1 in | |
| March | 47°F (8°C) | 2.6 in | |
| April | 53°F (12°C) | 3.1 in | |
| May | 62°F (17°C) | 2.4 in | |
| June | 69°F (20°C) | 2.5 in | |
| July | 79°F (26°C) | 1.7 in | Warmest, Driest |
| August | 74°F (23°C) | 2.4 in | |
| September | 67°F (19°C) | 3.3 in | |
| October | 57°F (14°C) | 3.3 in | |
| November | 46°F (8°C) | 4.0 in | Wettest |
| December | 39°F (4°C) | 2.7 in | Coldest |
Riolo Terme has a seasonal temperature swing of 40°F / from 39°F in December to 79°F in July. Total annual precipitation is 32.1 inches, with November being the wettest month (4.0") and July the driest (1.7").