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Monthly climate in Petaejaevesi, Finland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Petaejaevesi features a subarctic climate (Dfc). Temperatures typically range between -6 °C (21 °F) and 17 °C (63 °F) through the year, but rarely can drop to -29 °C (-19 °F) or can rise to as high as 33 °C (91 °F). The average annual precipitation amounts to about 748 mm (29.5 inches) and receives 146 rainy days on the 1 mm (0.04 inches) threshold annually. Petaejaevesi enjoys an average of 3026 hours of sunshine throughout the year, and daylight varies from 5 hours 12 minutes to 19 hours 39 minutes per day.

Monthly average temperatures in Petaejaevesi, Finland

The warmest months in Petaejaevesi are June, July and August, with daily mean temperatures ranging from 15 to 17 °C (59 - 63 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -3 °C (21 - 26 °F) throughout the day. On average each year, Petaejaevesi experiences 16 days above 25 °C (77.0 °F) and 162 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Petaejaevesi. 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)		12°C
(54°F)		21°C
(69°F)		28°C
(83°F)		32°C
(90°F)		33°C
(91°F)		32°C
(90°F)		22°C
(73°F)		19°C
(67°F)		11°C
(52°F)		5°C
(40°F)
Mean maximum4°C
(39°F)		4°C
(40°F)		9°C
(49°F)		15°C
(60°F)		25°C
(77°F)		27°C
(81°F)		29°C
(84°F)		26°C
(79°F)		20°C
(69°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
(35°F)		7°C
(45°F)		14°C
(58°F)		21°C
(69°F)		22°C
(71°F)		19°C
(67°F)		13°C
(57°F)		7°C
(45°F)		2°C
(37°F)		-2°C
(29°F)
Daily mean-5°C
(22°F)		-6°C
(21°F)		-3°C
(28°F)		2°C
(36°F)		9°C
(49°F)		16°C
(61°F)		17°C
(63°F)		15°C
(59°F)		10°C
(50°F)		5°C
(41°F)		1°C
(34°F)		-3°C
(26°F)
Average low-8°C
(18°F)		-9°C
(16°F)		-7°C
(20°F)		-3°C
(28°F)		3°C
(38°F)		10°C
(50°F)		11°C
(53°F)		11°C
(51°F)		6°C
(44°F)		2°C
(37°F)		-1°C
(30°F)		-5°C
(23°F)
Mean minimum-23°C
(-9°F)		-22°C
(-7°F)		-19°C
(-2°F)		-11°C
(13°F)		-4°C
(25°F)		4°C
(40°F)		6°C
(43°F)		5°C
(41°F)		-1°C
(31°F)		-6°C
(21°F)		-11°C
(13°F)		-14°C
(8°F)
Minimum-28°C
(-17°F)		-29°C
(-19°F)		-27°C
(-17°F)		-15°C
(5°F)		-6°C
(22°F)		-1°C
(30°F)		4°C
(40°F)		4°C
(39°F)		-4°C
(26°F)		-10°C
(15°F)		-15°C
(5°F)		-23°C
(-9°F)

Compare climate in Petaejaevesi with other places

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

Monthly average precipitation in Petaejaevesi, Finland

Petaejaevesi usually has the most precipitation in August, September and October, with an average of 13 rainy days and 81 mm (3.2 inches) of precipitation per month. The driest months in Petaejaevesi are January, February and March. On average, 45 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Petaejaevesi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)47 (1.9)45 (1.8)43 (1.7)47 (1.9)63 (2.5)58 (2.3)70 (2.7)93 (3.6)73 (2.9)76 (3.0)65 (2.6)69 (2.7)
Average precipitation days (≥ 1 mm)121012111110121412141315

Monthly sunshine hours in Petaejaevesi, Finland

The sunniest months in Petaejaevesi are May, June and July, when the sun shines an average of 14 hours 57 minutes a day. Least sunny months in Petaejaevesi: January, November and December receive an average of 1 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Petaejaevesi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours381332483464214824723922461476631
Mean daily daylight hours6h 10m8h 50m11h 50m14h 53m17h 49m19h 39m18h 38m15h 52m12h 52m9h 51m6h 58m5h 12m

Solar UV radiation in Petaejaevesi, Finland

Petaejaevesi 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 Petaejaevesi UV Index data.

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