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Monthly climate in Ruukki, Finland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Ruukki features a subarctic climate (Dfc). Temperatures typically range between -8 °C (18 °F) and 17 °C (62 °F) through the year, but rarely can drop to -30 °C (-23 °F) or can rise to as high as 31 °C (88 °F). The average annual precipitation amounts to about 670 mm (26.4 inches) and receives 127 rainy days on the 1 mm (0.04 inches) threshold annually. Ruukki enjoys an average of 3214 hours of sunshine throughout the year, and daylight varies from 4 hours 1 minutes to 21 hours 15 minutes per day.

Monthly average temperatures in Ruukki, Finland

The warmest months in Ruukki are June, July and August, with daily mean temperatures ranging from 14 to 17 °C (58 - 62 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -4 °C (18 - 25 °F) throughout the day. On average each year, Ruukki experiences 7 days above 25 °C (77.0 °F) and 164 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ruukki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum6°C
(42°F)		5°C
(42°F)		8°C
(46°F)		18°C
(65°F)		27°C
(81°F)		29°C
(85°F)		31°C
(88°F)		31°C
(87°F)		24°C
(75°F)		18°C
(65°F)		10°C
(50°F)		5°C
(41°F)
Mean maximum3°C
(38°F)		3°C
(38°F)		6°C
(44°F)		12°C
(54°F)		23°C
(73°F)		24°C
(76°F)		27°C
(81°F)		26°C
(78°F)		19°C
(67°F)		13°C
(57°F)		8°C
(46°F)		4°C
(39°F)
Average high-4°C
(24°F)		-5°C
(24°F)		-1°C
(31°F)		4°C
(40°F)		11°C
(53°F)		18°C
(64°F)		21°C
(69°F)		18°C
(65°F)		13°C
(56°F)		6°C
(44°F)		2°C
(35°F)		-2°C
(29°F)
Daily mean-7°C
(20°F)		-8°C
(18°F)		-4°C
(26°F)		1°C
(34°F)		7°C
(46°F)		14°C
(58°F)		17°C
(62°F)		14°C
(58°F)		10°C
(50°F)		4°C
(40°F)		-0°C
(32°F)		-4°C
(25°F)
Average low-9°C
(15°F)		-11°C
(12°F)		-7°C
(19°F)		-3°C
(27°F)		2°C
(37°F)		9°C
(48°F)		12°C
(53°F)		10°C
(51°F)		6°C
(44°F)		2°C
(36°F)		-2°C
(28°F)		-6°C
(21°F)
Mean minimum-25°C
(-13°F)		-23°C
(-9°F)		-22°C
(-7°F)		-10°C
(14°F)		-4°C
(24°F)		4°C
(39°F)		5°C
(42°F)		3°C
(38°F)		-1°C
(30°F)		-8°C
(18°F)		-13°C
(9°F)		-17°C
(1°F)
Minimum-30°C
(-23°F)		-26°C
(-15°F)		-27°C
(-16°F)		-13°C
(9°F)		-8°C
(18°F)		1°C
(33°F)		4°C
(40°F)		-0°C
(31°F)		-5°C
(23°F)		-11°C
(12°F)		-18°C
(0°F)		-23°C
(-9°F)

Compare climate in Ruukki with other places

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

Monthly average precipitation in Ruukki, Finland

Ruukki usually has the most precipitation in July, August and October, with an average of 14 rainy days and 81 mm (3.2 inches) of precipitation per month. The driest months in Ruukki are January, February and April. On average, 36 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ruukki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)36 (1.4)36 (1.4)36 (1.4)36 (1.4)52 (2.1)53 (2.1)74 (2.9)92 (3.6)70 (2.8)77 (3.0)57 (2.2)50 (2.0)
Average precipitation days (≥ 1 mm)9810688121512161112

Monthly sunshine hours in Ruukki, Finland

The sunniest months in Ruukki are May, June and July, when the sun shines an average of 15 hours 54 minutes a day. Least sunny months in Ruukki: January, November and December receive an average of 1 hours 27 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ruukki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours351352713634495115024102801567126
Mean daily daylight hours5h 16m8h 27m11h 49m15h 14m18h 42m21h 15m19h 47m16h 21m12h 57m9h 36m6h 15m4h 1m

Solar UV radiation in Ruukki, Finland

Ruukki experiences the highest level of ultraviolet (UV) radiation in April, June and July, when the maximum UV index can reach values of 4 - 6, 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 Ruukki UV Index data.

Average daily maximum UV levels by month for Ruukki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)113446643211