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Monthly climate in Velletri, Italy

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Velletri features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 7 °C (44 °F) and 26 °C (79 °F) through the year, but rarely can drop to -12 °C (11 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 1101 mm (43.3 inches) and receives 118 rainy days on the 1 mm (0.04 inches) threshold annually. Velletri enjoys an average of 3929 hours of sunshine throughout the year, and daylight varies from 9 hours 11 minutes to 15 hours 8 minutes per day.

Monthly average temperatures in Velletri, Italy

The warmest months in Velletri are June, July and August, with daily mean temperatures ranging from 22 to 26 °C (72 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 7 to 9 °C (44 - 48 °F) throughout the day. On average each year, Velletri experiences 96 days above 25 °C (77.0 °F) and 8 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Velletri. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum18°C
(64°F)		20°C
(68°F)		22°C
(72°F)		27°C
(80°F)		33°C
(92°F)		34°C
(94°F)		36°C
(96°F)		37°C
(99°F)		32°C
(90°F)		28°C
(83°F)		23°C
(73°F)		18°C
(64°F)
Mean maximum15°C
(60°F)		17°C
(64°F)		21°C
(69°F)		23°C
(73°F)		28°C
(82°F)		31°C
(88°F)		34°C
(94°F)		36°C
(96°F)		30°C
(87°F)		25°C
(78°F)		21°C
(70°F)		17°C
(62°F)
Average high11°C
(52°F)		13°C
(56°F)		15°C
(59°F)		18°C
(65°F)		22°C
(72°F)		27°C
(81°F)		30°C
(87°F)		31°C
(88°F)		26°C
(79°F)		21°C
(70°F)		16°C
(62°F)		13°C
(55°F)
Daily mean7°C
(44°F)		9°C
(48°F)		10°C
(51°F)		13°C
(56°F)		18°C
(64°F)		22°C
(72°F)		25°C
(78°F)		26°C
(79°F)		21°C
(70°F)		16°C
(62°F)		13°C
(55°F)		8°C
(47°F)
Average low3°C
(37°F)		5°C
(41°F)		6°C
(42°F)		9°C
(48°F)		13°C
(55°F)		17°C
(63°F)		20°C
(68°F)		21°C
(69°F)		17°C
(62°F)		12°C
(54°F)		9°C
(49°F)		5°C
(41°F)
Mean minimum-2°C
(29°F)		-2°C
(28°F)		-1°C
(30°F)		3°C
(37°F)		8°C
(46°F)		13°C
(56°F)		17°C
(63°F)		16°C
(62°F)		11°C
(52°F)		8°C
(46°F)		3°C
(38°F)		-0°C
(32°F)
Minimum-6°C
(21°F)		-12°C
(11°F)		-11°C
(12°F)		0°C
(33°F)		4°C
(40°F)		10°C
(50°F)		16°C
(61°F)		15°C
(59°F)		8°C
(47°F)		6°C
(44°F)		-1°C
(31°F)		-3°C
(28°F)

Compare climate in Velletri with other places

Compare temperature, precipitation, sunshine, UV index in Velletri, Italy with other places around the world.

Monthly average precipitation in Velletri, Italy

Velletri usually has the most precipitation in October, November and December, with an average of 13 rainy days and 156 mm (6.1 inches) of precipitation per month. The driest months in Velletri are June, July and August. On average, 35 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Velletri. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)73 (2.9)92 (3.6)94 (3.7)75 (2.9)89 (3.5)47 (1.9)31 (1.2)28 (1.1)106 (4.2)106 (4.2)191 (7.5)170 (6.7)
Average precipitation days (≥ 1 mm)9910111274710101613

Monthly sunshine hours in Velletri, Italy

The sunniest months in Velletri are May, June and July, when the sun shines an average of 13 hours 32 minutes a day. Least sunny months in Velletri: January, November and December receive an average of 7 hours 31 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Velletri. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours201260327355399415429398337314245244
Mean daily daylight hours9h 31m10h 35m11h 57m13h 21m14h 32m15h 8m14h 49m13h 46m12h 26m11h 2m9h 49m9h 11m

Solar UV radiation in Velletri, Italy

Velletri experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Velletri UV Index data.

Average daily maximum UV levels by month for Velletri. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)34579101098642