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Monthly climate in Suomusjaervi, Finland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Suomusjaervi features a humid continental climate (Dfb). Temperatures typically range between -3 °C (26 °F) and 18 °C (64 °F) through the year, but rarely can drop to -23 °C (-8 °F) or can rise to as high as 32 °C (90 °F). The average annual precipitation amounts to about 753 mm (29.6 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually. Suomusjaervi enjoys an average of 3353 hours of sunshine throughout the year, and daylight varies from 5 hours 53 minutes to 18 hours 49 minutes per day.

Monthly average temperatures in Suomusjaervi, Finland

The warmest months in Suomusjaervi are June, July and August, with daily mean temperatures ranging from 16 to 18 °C (61 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from -3 to -1 °C (26 - 31 °F) throughout the day. On average each year, Suomusjaervi experiences 10 days above 25 °C (77.0 °F) and 118 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Suomusjaervi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum8°C
(47°F)		6°C
(44°F)		10°C
(51°F)		19°C
(67°F)		26°C
(79°F)		30°C
(86°F)		32°C
(90°F)		29°C
(84°F)		23°C
(73°F)		16°C
(62°F)		12°C
(55°F)		7°C
(44°F)
Mean maximum5°C
(40°F)		4°C
(40°F)		9°C
(48°F)		15°C
(58°F)		22°C
(72°F)		24°C
(76°F)		28°C
(83°F)		25°C
(78°F)		20°C
(69°F)		15°C
(59°F)		10°C
(51°F)		6°C
(42°F)
Average high-0°C
(32°F)		-1°C
(30°F)		2°C
(37°F)		8°C
(46°F)		14°C
(57°F)		20°C
(68°F)		22°C
(71°F)		20°C
(68°F)		15°C
(59°F)		9°C
(49°F)		5°C
(41°F)		1°C
(34°F)
Daily mean-2°C
(28°F)		-3°C
(26°F)		-1°C
(31°F)		4°C
(39°F)		10°C
(50°F)		16°C
(61°F)		18°C
(64°F)		16°C
(62°F)		12°C
(54°F)		7°C
(45°F)		3°C
(38°F)		-1°C
(31°F)
Average low-5°C
(24°F)		-6°C
(21°F)		-4°C
(25°F)		-0°C
(32°F)		5°C
(41°F)		11°C
(52°F)		13°C
(57°F)		13°C
(55°F)		9°C
(48°F)		5°C
(41°F)		1°C
(35°F)		-2°C
(28°F)
Mean minimum-16°C
(3°F)		-16°C
(4°F)		-15°C
(6°F)		-7°C
(19°F)		-2°C
(29°F)		5°C
(42°F)		8°C
(47°F)		8°C
(46°F)		2°C
(35°F)		-3°C
(27°F)		-5°C
(24°F)		-9°C
(16°F)
Minimum-23°C
(-8°F)		-22°C
(-7°F)		-22°C
(-8°F)		-12°C
(10°F)		-4°C
(26°F)		3°C
(38°F)		6°C
(44°F)		7°C
(45°F)		-2°C
(29°F)		-5°C
(24°F)		-8°C
(18°F)		-18°C
(0°F)

Compare climate in Suomusjaervi with other places

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

Monthly average precipitation in Suomusjaervi, Finland

Suomusjaervi usually has the most precipitation in July, August and October, with an average of 12 rainy days and 86 mm (3.4 inches) of precipitation per month. The driest months in Suomusjaervi are February, March and April. On average, 46 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Suomusjaervi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)56 (2.2)48 (1.9)52 (2.0)38 (1.5)53 (2.1)52 (2.1)82 (3.2)88 (3.5)63 (2.5)87 (3.4)61 (2.4)73 (2.9)
Average precipitation days (≥ 1 mm)119119118101213161215

Monthly sunshine hours in Suomusjaervi, Finland

The sunniest months in Suomusjaervi are May, June and July, when the sun shines an average of 15 hours 30 minutes a day. Least sunny months in Suomusjaervi: January, November and December receive an average of 2 hours 35 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Suomusjaervi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours5715626236445349048241029919411762
Mean daily daylight hours6h 42m9h 6m11h 51m14h 40m17h 17m18h 49m17h 59m15h 33m12h 48m10h 1m7h 25m5h 53m

Solar UV radiation in Suomusjaervi, Finland

Suomusjaervi 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 Suomusjaervi UV Index data.

Average daily maximum UV levels by month for Suomusjaervi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)113457754211