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Monthly climate in Isernia, Molise, Italy

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Isernia features a hot-summer Mediterranean climate (Csa).Temperatures typically range between 4 °C (39 °F) and 23 °C (73 °F) through the year, but rarely can drop to -13 °C (8 °F) or can rise to as high as 35 °C (96 °F).The average annual precipitation amounts to about 1267 mm (49.9 inches) and receives 141 rainy days on the 1 mm (0.04 inches) threshold annually.Isernia enjoys an average of 3837 hours of sunshine throughout the year, and daylight varies from 9 hours 13 minutes to 15 hours 6 minutes per day.

Monthly average temperatures in Isernia, Molise, Italy §

The warmest months in Isernia are June, July and August, with daily mean temperatures ranging from 19 to 23 °C (67 - 73 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 6 °C (39 - 43 °F) throughout the day. On average each year, Isernia experiences 63 days above 25 °C (77.0 °F) and 40 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Isernia, Molise, 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 18°C
(64°F)		 18°C
(64°F)		 19°C
(67°F)		 25°C
(77°F)		 27°C
(81°F)		 31°C
(88°F)		 33°C
(91°F)		 35°C
(96°F)		 28°C
(84°F)		 24°C
(76°F)		 18°C
(65°F)		 15°C
(59°F)
Mean maximum 13°C
(55°F)		 14°C
(58°F)		 18°C
(64°F)		 21°C
(70°F)		 24°C
(75°F)		 28°C
(82°F)		 31°C
(87°F)		 33°C
(91°F)		 28°C
(82°F)		 23°C
(74°F)		 17°C
(64°F)		 14°C
(57°F)
Average high 8°C
(46°F)		 10°C
(51°F)		 12°C
(53°F)		 15°C
(60°F)		 19°C
(66°F)		 24°C
(76°F)		 27°C
(81°F)		 28°C
(83°F)		 23°C
(74°F)		 18°C
(65°F)		 13°C
(56°F)		 9°C
(49°F)
Daily mean 4°C
(39°F)		 6°C
(43°F)		 7°C
(45°F)		 10°C
(51°F)		 14°C
(58°F)		 19°C
(67°F)		 22°C
(72°F)		 23°C
(73°F)		 18°C
(65°F)		 13°C
(56°F)		 10°C
(50°F)		 5°C
(42°F)
Average low -0°C
(32°F)		 2°C
(36°F)		 2°C
(37°F)		 6°C
(43°F)		 10°C
(50°F)		 14°C
(58°F)		 17°C
(62°F)		 17°C
(63°F)		 13°C
(56°F)		 9°C
(49°F)		 7°C
(44°F)		 2°C
(36°F)
Mean minimum -6°C
(22°F)		 -5°C
(24°F)		 -5°C
(23°F)		 -1°C
(30°F)		 4°C
(39°F)		 9°C
(49°F)		 13°C
(55°F)		 13°C
(56°F)		 7°C
(46°F)		 5°C
(41°F)		 1°C
(34°F)		 -3°C
(27°F)
Minimum -13°C
(8°F)		 -10°C
(13°F)		 -13°C
(8°F)		 -5°C
(24°F)		 1°C
(35°F)		 7°C
(44°F)		 11°C
(53°F)		 12°C
(54°F)		 6°C
(42°F)		 3°C
(37°F)		 -4°C
(26°F)		 -6°C
(22°F)

Compare climate in Isernia with other places

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

Monthly average precipitation in Isernia, Molise, Italy §

Isernia usually has the most precipitation in February, November and December, with an average of 13 rainy days and 174 mm (6.8 inches) of precipitation per month.The driest months in Isernia are June, July and August. On average, 54 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Isernia, Molise, 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) 90 (3.5) 127 (5.0) 109 (4.3) 92 (3.6) 109 (4.3) 75 (3.0) 48 (1.9) 38 (1.5) 81 (3.2) 104 (4.1) 225 (8.8) 170 (6.7)
Average precipitation days (≥ 1 mm) 11 11 14 13 15 9 7 9 11 12 16 13

Monthly sunshine hours in Isernia, Molise, Italy §

The sunniest months in Isernia are June, July and August, when the sun shines an average of 13 hours 25 minutes a day.Least sunny months in Isernia: January, November and December receive an average of 7 hours 6 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Isernia, Molise, 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 185 249 313 349 390 410 427 397 335 309 231 237
Mean daily daylight hours 9h 32m 10h 36m 11h 57m 13h 20m 14h 31m 15h 6m 14h 48m 13h 45m 12h 25m 11h 3m 9h 50m 9h 13m

Solar UV radiation in Isernia, Molise, Italy §

Isernia 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 Isernia UV Index data.

Average daily maximum UV levels by month for Isernia, Molise, 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 6 8 9 10 10 9 8 6 4 2