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Monthly climate in Heinola, Paijat-Hame, Finland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Heinola features a subarctic climate (Dfc).Temperatures typically range between -5 °C (23 °F) and 17 °C (63 °F) through the year, but rarely can drop to -27 °C (-16 °F) or can rise to as high as 30 °C (87 °F).The average annual precipitation amounts to about 731 mm (28.8 inches) and receives 146 rainy days on the 1 mm (0.04 inches) threshold annually.Heinola enjoys an average of 3031 hours of sunshine throughout the year, and daylight varies from 5 hours 36 minutes to 19 hours 10 minutes per day.

Monthly average temperatures in Heinola, Paijat-Hame, Finland §

The warmest months in Heinola 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 -5 to -2 °C (23 - 28 °F) throughout the day. On average each year, Heinola experiences 10 days above 25 °C (77.0 °F) and 132 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Heinola, Paijat-Hame, Finland.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 7°C
(45°F)		 7°C
(45°F)		 11°C
(52°F)		 19°C
(66°F)		 28°C
(83°F)		 30°C
(86°F)		 30°C
(87°F)		 30°C
(87°F)		 22°C
(72°F)		 17°C
(63°F)		 11°C
(53°F)		 5°C
(41°F)
Mean maximum 3°C
(39°F)		 4°C
(39°F)		 8°C
(47°F)		 15°C
(58°F)		 23°C
(74°F)		 25°C
(77°F)		 27°C
(80°F)		 25°C
(77°F)		 19°C
(67°F)		 14°C
(58°F)		 9°C
(49°F)		 4°C
(39°F)
Average high -2°C
(28°F)		 -3°C
(28°F)		 1°C
(35°F)		 7°C
(44°F)		 13°C
(56°F)		 19°C
(67°F)		 21°C
(69°F)		 19°C
(67°F)		 14°C
(57°F)		 8°C
(47°F)		 3°C
(38°F)		 -1°C
(31°F)
Daily mean -4°C
(25°F)		 -5°C
(23°F)		 -2°C
(29°F)		 3°C
(38°F)		 9°C
(49°F)		 15°C
(60°F)		 17°C
(63°F)		 16°C
(61°F)		 11°C
(52°F)		 6°C
(43°F)		 2°C
(36°F)		 -2°C
(28°F)
Average low -7°C
(20°F)		 -8°C
(19°F)		 -5°C
(23°F)		 -1°C
(31°F)		 5°C
(40°F)		 11°C
(52°F)		 13°C
(56°F)		 12°C
(55°F)		 8°C
(47°F)		 4°C
(40°F)		 0°C
(33°F)		 -4°C
(25°F)
Mean minimum -20°C
(-4°F)		 -18°C
(-1°F)		 -17°C
(2°F)		 -8°C
(19°F)		 -1°C
(30°F)		 6°C
(43°F)		 9°C
(48°F)		 8°C
(46°F)		 2°C
(36°F)		 -2°C
(28°F)		 -7°C
(20°F)		 -11°C
(13°F)
Minimum -25°C
(-14°F)		 -27°C
(-16°F)		 -25°C
(-13°F)		 -11°C
(12°F)		 -3°C
(28°F)		 3°C
(37°F)		 8°C
(47°F)		 7°C
(44°F)		 0°C
(33°F)		 -5°C
(23°F)		 -9°C
(15°F)		 -20°C
(-4°F)

Compare climate in Heinola with other places

Compare temperature, precipitation, sunshine, UV index in Heinola, Paijat-Hame, Finland with other places around the world.

Monthly average precipitation in Heinola, Paijat-Hame, Finland §

Heinola usually has the most precipitation in July, August and October, with an average of 13 rainy days and 81 mm (3.2 inches) of precipitation per month.The driest months in Heinola 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 Heinola, Paijat-Hame, Finland.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 47 (1.9) 44 (1.7) 43 (1.7) 47 (1.8) 56 (2.2) 62 (2.5) 80 (3.1) 87 (3.4) 64 (2.5) 77 (3.0) 54 (2.1) 69 (2.7)
Average precipitation days (≥ 1 mm) 12 11 11 12 10 11 12 14 11 15 12 15

Monthly sunshine hours in Heinola, Paijat-Hame, Finland §

The sunniest months in Heinola are May, June and July, when the sun shines an average of 14 hours 48 minutes a day.Least sunny months in Heinola: January, November and December receive an average of 1 hours 45 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Heinola, Paijat-Hame, Finland.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 43 133 238 346 426 472 463 383 251 153 82 36
Mean daily daylight hours 6h 28m 8h 59m 11h 51m 14h 45m 17h 31m 19h 10m 18h 16m 15h 41m 12h 50m 9h 57m 7h 13m 5h 36m

Solar UV radiation in Heinola, Paijat-Hame, Finland §

Heinola 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 Heinola UV Index data.

Average daily maximum UV levels by month for Heinola, Paijat-Hame, Finland.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 1 1 3 4 5 6 7 5 3 2 1 1