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Monthly climate in Isso, Italy

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Isso features a oceanic climate (Cfb). Temperatures typically range between 3 °C (38 °F) and 24 °C (76 °F) through the year, but rarely can drop to -8 °C (18 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 1162 mm (45.7 inches) and receives 123 rainy days on the 1 mm (0.04 inches) threshold annually. Isso enjoys an average of 3763 hours of sunshine throughout the year, and daylight varies from 8 hours 45 minutes to 15 hours 36 minutes per day.

Monthly average temperatures in Isso, Italy

The warmest months in Isso are June, July and August, with daily mean temperatures ranging from 23 to 24 °C (73 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 6 °C (38 - 43 °F) throughout the day. On average each year, Isso experiences 86 days above 25 °C (77.0 °F) and 37 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Isso. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum15°C
(59°F)		20°C
(68°F)		23°C
(74°F)		26°C
(79°F)		32°C
(90°F)		36°C
(97°F)		34°C
(94°F)		36°C
(97°F)		30°C
(87°F)		27°C
(81°F)		18°C
(65°F)		14°C
(58°F)
Mean maximum12°C
(55°F)		16°C
(61°F)		21°C
(70°F)		24°C
(76°F)		28°C
(82°F)		32°C
(90°F)		33°C
(91°F)		34°C
(94°F)		30°C
(86°F)		24°C
(76°F)		17°C
(63°F)		12°C
(54°F)
Average high8°C
(46°F)		11°C
(52°F)		14°C
(57°F)		18°C
(65°F)		22°C
(72°F)		28°C
(82°F)		29°C
(84°F)		29°C
(85°F)		24°C
(76°F)		19°C
(66°F)		12°C
(54°F)		8°C
(47°F)
Daily mean3°C
(38°F)		6°C
(43°F)		9°C
(48°F)		13°C
(56°F)		18°C
(64°F)		23°C
(73°F)		24°C
(76°F)		24°C
(76°F)		20°C
(67°F)		14°C
(58°F)		9°C
(49°F)		4°C
(40°F)
Average low-0°C
(32°F)		2°C
(36°F)		4°C
(40°F)		8°C
(47°F)		13°C
(56°F)		18°C
(65°F)		20°C
(68°F)		20°C
(68°F)		15°C
(60°F)		11°C
(51°F)		6°C
(44°F)		1°C
(35°F)
Mean minimum-4°C
(26°F)		-3°C
(27°F)		-2°C
(30°F)		2°C
(36°F)		8°C
(46°F)		14°C
(58°F)		16°C
(61°F)		15°C
(59°F)		9°C
(49°F)		6°C
(43°F)		0°C
(33°F)		-3°C
(26°F)
Minimum-6°C
(22°F)		-8°C
(18°F)		-6°C
(21°F)		-1°C
(30°F)		4°C
(39°F)		12°C
(55°F)		14°C
(58°F)		13°C
(56°F)		8°C
(47°F)		3°C
(37°F)		-2°C
(29°F)		-5°C
(24°F)

Compare climate in Isso with other places

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

Monthly average precipitation in Isso, Italy

Isso usually has the most precipitation in July, September and November, with an average of 12 rainy days and 137 mm (5.4 inches) of precipitation per month. The driest months in Isso are January, February and March. On average, 46 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Isso. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)28 (1.1)48 (1.9)62 (2.4)90 (3.6)129 (5.1)110 (4.3)133 (5.2)107 (4.2)143 (5.6)97 (3.8)135 (5.3)79 (3.1)
Average precipitation days (≥ 1 mm)57101117101411108137

Monthly sunshine hours in Isso, Italy

The sunniest months in Isso are June, July and August, when the sun shines an average of 13 hours 21 minutes a day. Least sunny months in Isso: January, November and December receive an average of 6 hours 44 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Isso. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours191232312346389409427391335296220209
Mean daily daylight hours9h 8m10h 22m11h 56m13h 32m14h 54m15h 36m15h 14m14h 1m12h 29m10h 53m9h 29m8h 45m

Solar UV radiation in Isso, Italy

Isso experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 9, 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 3. For more detailed information, check out our hourly Isso UV Index data.

Average daily maximum UV levels by month for Isso. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)236689986532