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Monthly climate in Sievi, Finland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sievi features a subarctic climate (Dfc). Temperatures typically range between -7 °C (20 °F) and 17 °C (63 °F) through the year, but rarely can drop to -31 °C (-24 °F) or can rise to as high as 32 °C (90 °F). The average annual precipitation amounts to about 696 mm (27.4 inches) and receives 134 rainy days on the 1 mm (0.04 inches) threshold annually. Sievi enjoys an average of 3174 hours of sunshine throughout the year, and daylight varies from 4 hours 21 minutes to 20 hours 46 minutes per day.

Monthly average temperatures in Sievi, Finland

The warmest months in Sievi are June, July and August, with daily mean temperatures ranging from 14 to 17 °C (58 - 63 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -4 °C (20 - 25 °F) throughout the day. On average each year, Sievi experiences 13 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 Sievi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum6°C
(44°F)		6°C
(43°F)		11°C
(51°F)		21°C
(70°F)		28°C
(83°F)		31°C
(88°F)		32°C
(90°F)		32°C
(90°F)		24°C
(75°F)		20°C
(69°F)		10°C
(51°F)		5°C
(41°F)
Mean maximum4°C
(39°F)		4°C
(40°F)		8°C
(47°F)		15°C
(59°F)		24°C
(75°F)		26°C
(80°F)		28°C
(83°F)		26°C
(80°F)		20°C
(68°F)		14°C
(58°F)		8°C
(47°F)		4°C
(39°F)
Average high-4°C
(25°F)		-4°C
(25°F)		1°C
(34°F)		6°C
(44°F)		13°C
(55°F)		19°C
(67°F)		21°C
(71°F)		19°C
(66°F)		13°C
(56°F)		7°C
(44°F)		2°C
(35°F)		-2°C
(29°F)
Daily mean-6°C
(21°F)		-7°C
(20°F)		-3°C
(27°F)		2°C
(36°F)		8°C
(47°F)		15°C
(59°F)		17°C
(63°F)		14°C
(58°F)		10°C
(49°F)		4°C
(40°F)		-0°C
(32°F)		-4°C
(25°F)
Average low-9°C
(16°F)		-10°C
(14°F)		-7°C
(19°F)		-3°C
(28°F)		3°C
(37°F)		9°C
(48°F)		11°C
(52°F)		10°C
(50°F)		6°C
(43°F)		2°C
(36°F)		-2°C
(28°F)		-6°C
(22°F)
Mean minimum-24°C
(-12°F)		-23°C
(-9°F)		-21°C
(-6°F)		-11°C
(13°F)		-3°C
(26°F)		3°C
(37°F)		5°C
(41°F)		3°C
(38°F)		-1°C
(30°F)		-8°C
(18°F)		-12°C
(11°F)		-16°C
(3°F)
Minimum-31°C
(-24°F)		-27°C
(-16°F)		-28°C
(-19°F)		-14°C
(7°F)		-5°C
(22°F)		-1°C
(31°F)		2°C
(37°F)		2°C
(35°F)		-5°C
(24°F)		-14°C
(8°F)		-18°C
(-1°F)		-22°C
(-8°F)

Compare climate in Sievi with other places

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

Monthly average precipitation in Sievi, Finland

Sievi usually has the most precipitation in August, September and October, with an average of 14 rainy days and 83 mm (3.3 inches) of precipitation per month. The driest months in Sievi are January, March and April. On average, 38 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sievi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)37 (1.5)40 (1.6)37 (1.5)39 (1.5)58 (2.3)56 (2.2)72 (2.9)91 (3.6)76 (3.0)83 (3.3)59 (2.3)48 (1.9)
Average precipitation days (≥ 1 mm)108108119111613141212

Monthly sunshine hours in Sievi, Finland

The sunniest months in Sievi are May, June and July, when the sun shines an average of 15 hours 37 minutes a day. Least sunny months in Sievi: January, November and December receive an average of 1 hours 29 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sievi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours351372693534375064924112681597228
Mean daily daylight hours5h 31m8h 33m11h 49m15h 9m18h 28m20h 46m19h 28m16h 13m12h 56m9h 40m6h 27m4h 21m

Solar UV radiation in Sievi, Finland

Sievi experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 5 - 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 Sievi UV Index data.

Average daily maximum UV levels by month for Sievi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)112356653211