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Monthly climate in Riano, Lazio, Italy

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Riano features a hot-summer Mediterranean climate (Csa).Temperatures typically range between 7 °C (45 °F) and 27 °C (80 °F) through the year, but rarely can drop to -11 °C (12 °F) or can rise to as high as 39 °C (103 °F).The average annual precipitation amounts to about 930 mm (36.6 inches) and receives 103 rainy days on the 1 mm (0.04 inches) threshold annually.Riano enjoys an average of 3904 hours of sunshine throughout the year, and daylight varies from 9 hours 10 minutes to 15 hours 9 minutes per day.

Monthly average temperatures in Riano, Lazio, Italy §

The warmest months in Riano are June, July and August, with daily mean temperatures ranging from 23 to 27 °C (74 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 7 to 9 °C (45 - 49 °F) throughout the day. On average each year, Riano experiences 108 days above 25 °C (77.0 °F) and 7 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Riano, Lazio, Italy.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 19°C
(66°F)		 21°C
(69°F)		 23°C
(75°F)		 28°C
(82°F)		 34°C
(93°F)		 36°C
(97°F)		 37°C
(99°F)		 39°C
(103°F)		 33°C
(91°F)		 30°C
(87°F)		 24°C
(75°F)		 18°C
(65°F)
Mean maximum 16°C
(61°F)		 18°C
(65°F)		 22°C
(71°F)		 25°C
(77°F)		 28°C
(83°F)		 33°C
(91°F)		 35°C
(96°F)		 37°C
(100°F)		 32°C
(89°F)		 27°C
(80°F)		 21°C
(71°F)		 17°C
(63°F)
Average high 12°C
(54°F)		 14°C
(58°F)		 16°C
(61°F)		 19°C
(67°F)		 23°C
(74°F)		 29°C
(84°F)		 32°C
(89°F)		 33°C
(91°F)		 27°C
(81°F)		 22°C
(72°F)		 17°C
(63°F)		 13°C
(56°F)
Daily mean 7°C
(45°F)		 9°C
(49°F)		 11°C
(52°F)		 14°C
(57°F)		 18°C
(65°F)		 23°C
(74°F)		 26°C
(79°F)		 27°C
(80°F)		 22°C
(72°F)		 17°C
(63°F)		 13°C
(56°F)		 9°C
(48°F)
Average low 3°C
(38°F)		 5°C
(41°F)		 6°C
(43°F)		 9°C
(48°F)		 13°C
(56°F)		 18°C
(64°F)		 20°C
(69°F)		 21°C
(70°F)		 17°C
(63°F)		 13°C
(55°F)		 10°C
(49°F)		 5°C
(41°F)
Mean minimum -1°C
(30°F)		 -2°C
(29°F)		 -1°C
(30°F)		 3°C
(37°F)		 9°C
(48°F)		 14°C
(58°F)		 18°C
(64°F)		 17°C
(63°F)		 11°C
(53°F)		 8°C
(47°F)		 4°C
(39°F)		 0°C
(33°F)
Minimum -4°C
(26°F)		 -10°C
(14°F)		 -11°C
(12°F)		 1°C
(34°F)		 6°C
(42°F)		 12°C
(54°F)		 17°C
(63°F)		 15°C
(59°F)		 8°C
(47°F)		 7°C
(45°F)		 -0°C
(31°F)		 -2°C
(28°F)

Compare climate in Riano with other places

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

Monthly average precipitation in Riano, Lazio, Italy §

Riano usually has the most precipitation in September, November and December, with an average of 12 rainy days and 133 mm (5.2 inches) of precipitation per month.The driest months in Riano are June, July and August. On average, 24 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Riano, Lazio, Italy.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 62 (2.4) 78 (3.1) 80 (3.2) 69 (2.7) 77 (3.0) 31 (1.2) 23 (0.9) 17 (0.7) 104 (4.1) 92 (3.6) 161 (6.3) 135 (5.3)
Average precipitation days (≥ 1 mm) 8 9 9 9 11 5 3 4 8 9 15 13

Monthly sunshine hours in Riano, Lazio, Italy §

The sunniest months in Riano are June, July and August, when the sun shines an average of 13 hours 32 minutes a day.Least sunny months in Riano: January, November and December receive an average of 7 hours 25 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Riano, Lazio, Italy.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 199 254 321 351 397 416 430 397 337 314 243 240
Mean daily daylight hours 9h 30m 10h 35m 11h 57m 13h 22m 14h 33m 15h 9m 14h 50m 13h 47m 12h 26m 11h 2m 9h 48m 9h 10m

Solar UV radiation in Riano, Lazio, Italy §

Riano 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 Riano UV Index data.

Average daily maximum UV levels by month for Riano, Lazio, Italy.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 4 5 7 8 10 10 9 7 5 4 2