nomadseason

Monthly climate in Mikkeli, Finland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Mikkeli features a subarctic climate (Dfc). Temperatures typically range between -6 °C (22 °F) and 17 °C (64 °F) through the year, but rarely can drop to -27 °C (-16 °F) or can rise to as high as 31 °C (88 °F). The average annual precipitation amounts to about 743 mm (29.2 inches) and receives 147 rainy days on the 1 mm (0.04 inches) threshold annually. Mikkeli enjoys an average of 3088 hours of sunshine throughout the year, and daylight varies from 5 hours 25 minutes to 19 hours 23 minutes per day.

Monthly average temperatures in Mikkeli, Finland

The warmest months in Mikkeli are June, July and August, with daily mean temperatures ranging from 16 to 17 °C (60 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -3 °C (22 - 27 °F) throughout the day. On average each year, Mikkeli experiences 10 days above 25 °C (77.0 °F) and 142 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Mikkeli. 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)		10°C
(51°F)		18°C
(65°F)		27°C
(82°F)		31°C
(88°F)		31°C
(88°F)		30°C
(86°F)		22°C
(72°F)		18°C
(64°F)		11°C
(51°F)		4°C
(40°F)
Mean maximum3°C
(38°F)		4°C
(39°F)		8°C
(46°F)		14°C
(57°F)		23°C
(73°F)		25°C
(78°F)		28°C
(82°F)		25°C
(77°F)		19°C
(67°F)		14°C
(58°F)		9°C
(48°F)		3°C
(38°F)
Average high-3°C
(27°F)		-3°C
(26°F)		1°C
(34°F)		6°C
(43°F)		13°C
(56°F)		20°C
(68°F)		21°C
(70°F)		19°C
(66°F)		13°C
(57°F)		7°C
(46°F)		3°C
(37°F)		-2°C
(29°F)
Daily mean-5°C
(23°F)		-6°C
(22°F)		-2°C
(28°F)		2°C
(36°F)		9°C
(49°F)		16°C
(61°F)		17°C
(64°F)		16°C
(60°F)		11°C
(51°F)		6°C
(42°F)		1°C
(35°F)		-3°C
(27°F)
Average low-7°C
(19°F)		-8°C
(17°F)		-6°C
(21°F)		-1°C
(30°F)		5°C
(41°F)		11°C
(53°F)		13°C
(57°F)		12°C
(54°F)		8°C
(46°F)		4°C
(39°F)		-0°C
(32°F)		-5°C
(24°F)
Mean minimum-22°C
(-7°F)		-19°C
(-2°F)		-17°C
(1°F)		-9°C
(17°F)		-2°C
(29°F)		6°C
(43°F)		8°C
(48°F)		8°C
(46°F)		2°C
(35°F)		-3°C
(27°F)		-8°C
(18°F)		-12°C
(11°F)
Minimum-27°C
(-16°F)		-26°C
(-14°F)		-25°C
(-12°F)		-13°C
(10°F)		-4°C
(26°F)		1°C
(34°F)		7°C
(45°F)		7°C
(45°F)		-1°C
(31°F)		-4°C
(24°F)		-13°C
(10°F)		-22°C
(-7°F)

Compare climate in Mikkeli with other places

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

Monthly average precipitation in Mikkeli, Finland

Mikkeli 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 Mikkeli are February, March and April. On average, 44 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Mikkeli. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)49 (1.9)45 (1.8)44 (1.7)44 (1.7)53 (2.1)66 (2.6)81 (3.2)86 (3.4)71 (2.8)76 (3.0)58 (2.3)70 (2.8)
Average precipitation days (≥ 1 mm)121012111011121512151215

Monthly sunshine hours in Mikkeli, Finland

The sunniest months in Mikkeli are May, June and July, when the sun shines an average of 15 hours 8 minutes a day. Least sunny months in Mikkeli: January, November and December receive an average of 1 hours 33 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Mikkeli. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours391362423524314804813872611697330
Mean daily daylight hours6h 20m8h 55m11h 50m14h 49m17h 39m19h 23m18h 26m15h 46m12h 51m9h 54m7h 6m5h 25m

Solar UV radiation in Mikkeli, Finland

Mikkeli 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 Mikkeli UV Index data.

Average daily maximum UV levels by month for Mikkeli. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)113456753211