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Monthly climate in Tervakoski, Finland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Tervakoski features a humid continental climate (Dfb). Temperatures typically range between -4 °C (24 °F) and 17 °C (64 °F) through the year, but rarely can drop to -28 °C (-18 °F) or can rise to as high as 31 °C (88 °F). The average annual precipitation amounts to about 731 mm (28.8 inches) and receives 140 rainy days on the 1 mm (0.04 inches) threshold annually. Tervakoski enjoys an average of 3209 hours of sunshine throughout the year, and daylight varies from 5 hours 45 minutes to 18 hours 58 minutes per day.

Monthly average temperatures in Tervakoski, Finland

The warmest months in Tervakoski are June, July and August, with daily mean temperatures ranging from 16 to 17 °C (61 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -4 to -2 °C (24 - 29 °F) throughout the day. On average each year, Tervakoski experiences 14 days above 25 °C (77.0 °F) and 137 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Tervakoski. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum8°C
(46°F)		7°C
(45°F)		11°C
(53°F)		21°C
(70°F)		28°C
(83°F)		31°C
(88°F)		31°C
(88°F)		30°C
(86°F)		24°C
(75°F)		18°C
(64°F)		12°C
(53°F)		6°C
(43°F)
Mean maximum4°C
(40°F)		5°C
(40°F)		10°C
(50°F)		17°C
(62°F)		25°C
(77°F)		26°C
(79°F)		28°C
(83°F)		26°C
(79°F)		21°C
(71°F)		15°C
(59°F)		10°C
(50°F)		5°C
(41°F)
Average high-1°C
(30°F)		-2°C
(29°F)		2°C
(36°F)		8°C
(47°F)		15°C
(59°F)		21°C
(70°F)		21°C
(71°F)		20°C
(68°F)		15°C
(59°F)		8°C
(48°F)		4°C
(39°F)		-0°C
(32°F)
Daily mean-4°C
(26°F)		-4°C
(24°F)		-1°C
(30°F)		4°C
(39°F)		10°C
(51°F)		16°C
(62°F)		17°C
(64°F)		16°C
(61°F)		11°C
(52°F)		6°C
(43°F)		2°C
(36°F)		-2°C
(29°F)
Average low-6°C
(21°F)		-7°C
(19°F)		-5°C
(23°F)		-1°C
(31°F)		4°C
(40°F)		11°C
(52°F)		12°C
(55°F)		12°C
(53°F)		8°C
(46°F)		4°C
(39°F)		0°C
(33°F)		-4°C
(26°F)
Mean minimum-19°C
(-3°F)		-19°C
(-1°F)		-17°C
(2°F)		-8°C
(17°F)		-3°C
(27°F)		5°C
(41°F)		8°C
(46°F)		6°C
(43°F)		1°C
(33°F)		-4°C
(25°F)		-8°C
(18°F)		-11°C
(12°F)
Minimum-25°C
(-13°F)		-28°C
(-18°F)		-25°C
(-13°F)		-14°C
(8°F)		-4°C
(24°F)		2°C
(35°F)		6°C
(44°F)		5°C
(42°F)		-3°C
(28°F)		-6°C
(22°F)		-10°C
(13°F)		-20°C
(-4°F)

Compare climate in Tervakoski with other places

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

Monthly average precipitation in Tervakoski, Finland

Tervakoski usually has the most precipitation in July, August and October, with an average of 13 rainy days and 79 mm (3.1 inches) of precipitation per month. The driest months in Tervakoski are February, March and April. On average, 45 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Tervakoski. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)51 (2.0)44 (1.7)46 (1.8)46 (1.8)58 (2.3)65 (2.5)82 (3.2)77 (3.0)66 (2.6)77 (3.0)53 (2.1)67 (2.6)
Average precipitation days (≥ 1 mm)11911121010121312151114

Monthly sunshine hours in Tervakoski, Finland

The sunniest months in Tervakoski are May, June and July, when the sun shines an average of 15 hours 18 minutes a day. Least sunny months in Tervakoski: January, November and December receive an average of 2 hours 7 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Tervakoski. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours4914625635244248847739727917210045
Mean daily daylight hours6h 36m9h 3m11h 51m14h 42m17h 23m18h 58m18h 6m15h 36m12h 49m9h 59m7h 19m5h 45m

Solar UV radiation in Tervakoski, Finland

Tervakoski 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 Tervakoski UV Index data.

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