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Monthly climate in Perna, Uusimaa, Finland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Perna features a humid continental climate (Dfb).Temperatures typically range between -4 °C (25 °F) and 18 °C (65 °F) through the year, but rarely can drop to -25 °C (-13 °F) or can rise to as high as 32 °C (90 °F).The average annual precipitation amounts to about 709 mm (27.9 inches) and receives 141 rainy days on the 1 mm (0.04 inches) threshold annually.Perna enjoys an average of 3288 hours of sunshine throughout the year, and daylight varies from 5 hours 51 minutes to 18 hours 51 minutes per day.

Monthly average temperatures in Perna, Uusimaa, Finland §

The warmest months in Perna are June, July and August, with daily mean temperatures ranging from 17 to 18 °C (62 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -4 to -1 °C (25 - 30 °F) throughout the day. On average each year, Perna experiences 15 days above 25 °C (77.0 °F) and 122 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Perna, Uusimaa, Finland.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 8°C
(47°F)		 8°C
(47°F)		 13°C
(55°F)		 21°C
(69°F)		 29°C
(84°F)		 31°C
(89°F)		 32°C
(90°F)		 31°C
(88°F)		 23°C
(74°F)		 17°C
(64°F)		 12°C
(54°F)		 7°C
(44°F)
Mean maximum 4°C
(40°F)		 5°C
(41°F)		 10°C
(49°F)		 16°C
(62°F)		 24°C
(75°F)		 26°C
(79°F)		 29°C
(84°F)		 26°C
(80°F)		 21°C
(70°F)		 15°C
(59°F)		 10°C
(51°F)		 5°C
(41°F)
Average high -1°C
(31°F)		 -1°C
(30°F)		 3°C
(37°F)		 8°C
(48°F)		 15°C
(59°F)		 21°C
(70°F)		 22°C
(72°F)		 20°C
(69°F)		 15°C
(59°F)		 9°C
(49°F)		 4°C
(40°F)		 0°C
(33°F)
Daily mean -3°C
(27°F)		 -4°C
(25°F)		 -1°C
(31°F)		 4°C
(40°F)		 11°C
(51°F)		 17°C
(62°F)		 18°C
(65°F)		 17°C
(62°F)		 12°C
(53°F)		 7°C
(45°F)		 3°C
(37°F)		 -1°C
(30°F)
Average low -5°C
(22°F)		 -7°C
(20°F)		 -5°C
(24°F)		 -0°C
(32°F)		 5°C
(41°F)		 11°C
(53°F)		 13°C
(56°F)		 12°C
(55°F)		 9°C
(48°F)		 4°C
(40°F)		 1°C
(34°F)		 -3°C
(27°F)
Mean minimum -19°C
(-2°F)		 -16°C
(3°F)		 -16°C
(4°F)		 -7°C
(19°F)		 -2°C
(28°F)		 5°C
(42°F)		 8°C
(47°F)		 7°C
(45°F)		 2°C
(35°F)		 -3°C
(27°F)		 -6°C
(21°F)		 -10°C
(14°F)
Minimum -25°C
(-13°F)		 -25°C
(-12°F)		 -23°C
(-9°F)		 -14°C
(8°F)		 -4°C
(26°F)		 2°C
(35°F)		 7°C
(44°F)		 6°C
(43°F)		 -2°C
(29°F)		 -5°C
(24°F)		 -8°C
(19°F)		 -20°C
(-4°F)

Compare climate in Perna with other places

Compare temperature, precipitation, sunshine, UV index in Perna, Uusimaa, Finland with other places around the world.

Monthly average precipitation in Perna, Uusimaa, Finland §

Perna usually has the most precipitation in August, October and December, with an average of 14 rainy days and 76 mm (3.0 inches) of precipitation per month.The driest months in Perna are March, April and May. On average, 47 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Perna, Uusimaa, Finland.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) 54 (2.1) 49 (1.9) 48 (1.9) 46 (1.8) 48 (1.9) 50 (2.0) 67 (2.6) 74 (2.9) 60 (2.4) 80 (3.2) 58 (2.3) 75 (2.9)
Average precipitation days (≥ 1 mm) 11 10 11 11 10 10 11 12 12 15 12 16

Monthly sunshine hours in Perna, Uusimaa, Finland §

The sunniest months in Perna are May, June and July, when the sun shines an average of 15 hours 28 minutes a day.Least sunny months in Perna: January, November and December receive an average of 2 hours 15 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Perna, Uusimaa, Finland.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 51 148 260 359 449 489 484 406 287 194 105 50
Mean daily daylight hours 6h 41m 9h 5m 11h 51m 14h 40m 17h 18m 18h 51m 18h 1m 15h 34m 12h 48m 10h 1m 7h 23m 5h 51m

Solar UV radiation in Perna, Uusimaa, Finland §

Perna experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 5 - 7, which corresponds to the Moderate / High category of sun exposure.January, February and November are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 1. For more detailed information, check out our hourly Perna UV Index data.

Average daily maximum UV levels by month for Perna, Uusimaa, Finland.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) 1 1 3 4 5 7 7 5 4 2 1 1