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Monthly climate in Saint-Denis, Aosta Valley, Italy

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Saint-Denis features a subarctic climate (Dfc).Temperatures typically range between -9 °C (15 °F) and 12 °C (54 °F) through the year, but rarely can drop to -26 °C (-15 °F) or can rise to as high as 25 °C (77 °F).The average annual precipitation amounts to about 1247 mm (49.1 inches) and receives 164 rainy days on the 1 mm (0.04 inches) threshold annually.Saint-Denis enjoys an average of 3772 hours of sunshine throughout the year, and daylight varies from 8 hours 43 minutes to 15 hours 38 minutes per day.

Monthly average temperatures in Saint-Denis, Aosta Valley, Italy §

The warmest months in Saint-Denis are June, July and August, with daily mean temperatures ranging from 10 to 12 °C (50 - 54 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -9 to -6 °C (15 - 21 °F) throughout the day. On average each year, Saint-Denis experiences 0 days above 25 °C (77.0 °F) and 196 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Saint-Denis, Aosta Valley, 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 3°C
(38°F)		 8°C
(47°F)		 9°C
(49°F)		 12°C
(53°F)		 17°C
(63°F)		 25°C
(77°F)		 24°C
(75°F)		 23°C
(74°F)		 19°C
(67°F)		 15°C
(60°F)		 12°C
(53°F)		 4°C
(39°F)
Mean maximum 0°C
(33°F)		 5°C
(42°F)		 7°C
(44°F)		 9°C
(49°F)		 14°C
(58°F)		 19°C
(66°F)		 22°C
(72°F)		 22°C
(72°F)		 18°C
(64°F)		 13°C
(56°F)		 7°C
(45°F)		 2°C
(35°F)
Average high -5°C
(22°F)		 -2°C
(29°F)		 -0°C
(32°F)		 4°C
(39°F)		 8°C
(47°F)		 14°C
(58°F)		 17°C
(63°F)		 17°C
(62°F)		 13°C
(55°F)		 8°C
(46°F)		 0°C
(33°F)		 -5°C
(24°F)
Daily mean -9°C
(15°F)		 -6°C
(21°F)		 -4°C
(25°F)		 -0°C
(32°F)		 4°C
(40°F)		 10°C
(50°F)		 12°C
(54°F)		 12°C
(54°F)		 8°C
(47°F)		 3°C
(38°F)		 -3°C
(27°F)		 -8°C
(18°F)
Average low -13°C
(8°F)		 -10°C
(14°F)		 -8°C
(17°F)		 -4°C
(24°F)		 0°C
(32°F)		 6°C
(43°F)		 7°C
(45°F)		 7°C
(45°F)		 4°C
(39°F)		 -0°C
(32°F)		 -6°C
(21°F)		 -12°C
(11°F)
Mean minimum -23°C
(-9°F)		 -18°C
(-1°F)		 -18°C
(-1°F)		 -13°C
(9°F)		 -6°C
(21°F)		 0°C
(33°F)		 3°C
(38°F)		 1°C
(35°F)		 -2°C
(28°F)		 -5°C
(24°F)		 -17°C
(2°F)		 -21°C
(-5°F)
Minimum -26°C
(-15°F)		 -22°C
(-7°F)		 -25°C
(-13°F)		 -16°C
(4°F)		 -10°C
(15°F)		 -3°C
(26°F)		 2°C
(36°F)		 0°C
(33°F)		 -5°C
(22°F)		 -9°C
(16°F)		 -22°C
(-8°F)		 -24°C
(-11°F)

Compare climate in Saint-Denis with other places

Compare temperature, precipitation, sunshine, UV index in Saint-Denis, Aosta Valley, Italy with other places around the world.

Monthly average precipitation in Saint-Denis, Aosta Valley, Italy §

Saint-Denis usually has the most precipitation in May, October and November, with an average of 14 rainy days and 138 mm (5.4 inches) of precipitation per month.The driest months in Saint-Denis are February, July and September. On average, 71 mm (2.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Saint-Denis, Aosta Valley, 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) 94 (3.7) 62 (2.4) 91 (3.6) 102 (4.0) 136 (5.4) 110 (4.3) 86 (3.4) 100 (4.0) 64 (2.5) 142 (5.6) 136 (5.3) 123 (4.8)
Average precipitation days (≥ 1 mm) 10 11 14 11 19 18 14 14 14 10 14 15

Monthly sunshine hours in Saint-Denis, Aosta Valley, Italy §

The sunniest months in Saint-Denis are June, July and August, when the sun shines an average of 13 hours 21 minutes a day.Least sunny months in Saint-Denis: January, November and December receive an average of 6 hours 50 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Saint-Denis, Aosta Valley, 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 188 244 315 344 382 406 427 395 333 292 218 222
Mean daily daylight hours 9h 7m 10h 22m 11h 56m 13h 33m 14h 56m 15h 38m 15h 16m 14h 2m 12h 29m 10h 52m 9h 27m 8h 43m

Solar UV radiation in Saint-Denis, Aosta Valley, Italy §

Saint-Denis 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, November 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 Saint-Denis UV Index data.

Average daily maximum UV levels by month for Saint-Denis, Aosta Valley, 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) 2 4 7 8 9 10 10 9 7 5 3 2