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Monthly climate in Karttula, Finland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Karttula 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 -29 °C (-20 °F) or can rise to as high as 33 °C (91 °F). The average annual precipitation amounts to about 785 mm (30.9 inches) and receives 151 rainy days on the 1 mm (0.04 inches) threshold annually. Karttula enjoys an average of 2927 hours of sunshine throughout the year, and daylight varies from 4 hours 56 minutes to 20 hours 0 minutes per day.

Monthly average temperatures in Karttula, Finland

The warmest months in Karttula are June, July and August, with daily mean temperatures ranging from 15 to 17 °C (60 - 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, Karttula experiences 13 days above 25 °C (77.0 °F) and 158 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Karttula. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum7°C
(44°F)		6°C
(43°F)		11°C
(52°F)		20°C
(69°F)		28°C
(83°F)		32°C
(89°F)		33°C
(91°F)		32°C
(91°F)		23°C
(74°F)		19°C
(66°F)		10°C
(50°F)		4°C
(39°F)
Mean maximum3°C
(38°F)		4°C
(39°F)		8°C
(47°F)		14°C
(57°F)		23°C
(74°F)		27°C
(80°F)		30°C
(86°F)		26°C
(79°F)		19°C
(67°F)		14°C
(57°F)		8°C
(46°F)		2°C
(37°F)
Average high-4°C
(25°F)		-4°C
(24°F)		0°C
(33°F)		6°C
(43°F)		13°C
(56°F)		20°C
(68°F)		21°C
(71°F)		19°C
(66°F)		13°C
(56°F)		7°C
(45°F)		2°C
(36°F)		-2°C
(28°F)
Daily mean-6°C
(21°F)		-7°C
(20°F)		-3°C
(26°F)		2°C
(35°F)		8°C
(47°F)		15°C
(60°F)		17°C
(63°F)		15°C
(60°F)		10°C
(50°F)		5°C
(41°F)		1°C
(33°F)		-4°C
(25°F)
Average low-9°C
(17°F)		-10°C
(15°F)		-7°C
(19°F)		-3°C
(27°F)		3°C
(38°F)		10°C
(50°F)		12°C
(54°F)		11°C
(53°F)		7°C
(45°F)		3°C
(38°F)		-1°C
(31°F)		-6°C
(22°F)
Mean minimum-24°C
(-10°F)		-21°C
(-6°F)		-19°C
(-2°F)		-10°C
(14°F)		-3°C
(26°F)		4°C
(40°F)		7°C
(45°F)		6°C
(44°F)		1°C
(34°F)		-4°C
(25°F)		-10°C
(15°F)		-14°C
(7°F)
Minimum-29°C
(-20°F)		-27°C
(-17°F)		-26°C
(-15°F)		-15°C
(5°F)		-5°C
(24°F)		0°C
(33°F)		6°C
(43°F)		5°C
(42°F)		-1°C
(30°F)		-6°C
(22°F)		-15°C
(5°F)		-23°C
(-8°F)

Compare climate in Karttula with other places

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

Monthly average precipitation in Karttula, Finland

Karttula usually has the most precipitation in August, September and October, with an average of 14 rainy days and 92 mm (3.6 inches) of precipitation per month. The driest months in Karttula are February, March and April. On average, 43 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Karttula. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)49 (1.9)42 (1.7)41 (1.6)44 (1.7)54 (2.1)59 (2.3)79 (3.1)98 (3.9)91 (3.6)86 (3.4)75 (2.9)67 (2.6)
Average precipitation days (≥ 1 mm)121012101111111414161515

Monthly sunshine hours in Karttula, Finland

The sunniest months in Karttula are May, June and July, when the sun shines an average of 14 hours 43 minutes a day. Least sunny months in Karttula: January, November and December receive an average of 1 hours 12 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Karttula. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours351272513394074804673812351265024
Mean daily daylight hours5h 57m8h 45m11h 50m14h 58m18h 2m20h 0m18h 54m15h 59m12h 53m9h 47m6h 48m4h 56m

Solar UV radiation in Karttula, Finland

Karttula 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 Karttula UV Index data.

Average daily maximum UV levels by month for Karttula. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)113456653211