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Monthly climate in Seinaejoki, Finland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Seinaejoki features a subarctic climate (Dfc).Temperatures typically range between -5 °C (22 °F) and 17 °C (63 °F) through the year, but rarely can drop to -28 °C (-19 °F) or can rise to as high as 31 °C (89 °F).The average annual precipitation amounts to about 681 mm (26.8 inches) and receives 136 rainy days on the 1 mm (0.04 inches) threshold annually.Seinaejoki enjoys an average of 3230 hours of sunshine throughout the year, and daylight varies from 4 hours 58 minutes to 19 hours 56 minutes per day.

Monthly average temperatures in Seinaejoki, Finland §

The warmest months in Seinaejoki 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 -5 to -3 °C (22 - 28 °F) throughout the day. On average each year, Seinaejoki experiences 13 days above 25 °C (77.0 °F) and 152 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Seinaejoki, 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 8°C
(46°F)		 7°C
(44°F)		 12°C
(55°F)		 21°C
(71°F)		 28°C
(82°F)		 31°C
(89°F)		 31°C
(88°F)		 31°C
(87°F)		 24°C
(75°F)		 20°C
(68°F)		 11°C
(53°F)		 5°C
(42°F)
Mean maximum 4°C
(40°F)		 4°C
(40°F)		 9°C
(49°F)		 17°C
(62°F)		 24°C
(76°F)		 26°C
(80°F)		 28°C
(82°F)		 26°C
(79°F)		 21°C
(70°F)		 15°C
(59°F)		 9°C
(48°F)		 4°C
(39°F)
Average high -2°C
(29°F)		 -3°C
(28°F)		 2°C
(36°F)		 8°C
(46°F)		 14°C
(57°F)		 20°C
(68°F)		 21°C
(71°F)		 19°C
(67°F)		 14°C
(57°F)		 7°C
(46°F)		 3°C
(37°F)		 -1°C
(31°F)
Daily mean -4°C
(24°F)		 -5°C
(22°F)		 -2°C
(29°F)		 3°C
(38°F)		 9°C
(49°F)		 15°C
(60°F)		 17°C
(63°F)		 15°C
(59°F)		 10°C
(50°F)		 5°C
(41°F)		 1°C
(34°F)		 -3°C
(28°F)
Average low -7°C
(20°F)		 -9°C
(17°F)		 -6°C
(22°F)		 -2°C
(30°F)		 3°C
(38°F)		 10°C
(49°F)		 11°C
(53°F)		 10°C
(51°F)		 6°C
(43°F)		 2°C
(36°F)		 -1°C
(30°F)		 -4°C
(24°F)
Mean minimum -20°C
(-5°F)		 -22°C
(-7°F)		 -18°C
(-0°F)		 -9°C
(16°F)		 -3°C
(26°F)		 4°C
(39°F)		 6°C
(43°F)		 3°C
(38°F)		 -1°C
(31°F)		 -9°C
(17°F)		 -10°C
(13°F)		 -13°C
(8°F)
Minimum -28°C
(-19°F)		 -28°C
(-17°F)		 -27°C
(-16°F)		 -16°C
(4°F)		 -5°C
(23°F)		 -1°C
(30°F)		 4°C
(39°F)		 3°C
(37°F)		 -4°C
(26°F)		 -13°C
(9°F)		 -17°C
(2°F)		 -26°C
(-15°F)

Compare climate in Seinaejoki with other places

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

Monthly average precipitation in Seinaejoki, Finland §

Seinaejoki usually has the most precipitation in August, September and October, with an average of 14 rainy days and 79 mm (3.1 inches) of precipitation per month.The driest months in Seinaejoki are January, February and March. On average, 39 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Seinaejoki, 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) 37 (1.4) 39 (1.5) 41 (1.6) 44 (1.7) 60 (2.3) 61 (2.4) 59 (2.3) 90 (3.6) 71 (2.8) 75 (2.9) 58 (2.3) 47 (1.9)
Average precipitation days (≥ 1 mm) 9 8 11 11 10 11 11 15 13 14 10 13

Monthly sunshine hours in Seinaejoki, Finland §

The sunniest months in Seinaejoki are May, June and July, when the sun shines an average of 15 hours 34 minutes a day.Least sunny months in Seinaejoki: January, November and December receive an average of 1 hours 55 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Seinaejoki, 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 42 145 264 356 449 502 479 405 273 175 91 42
Mean daily daylight hours 5h 59m 8h 45m 11h 50m 14h 58m 18h 0m 19h 56m 18h 52m 15h 58m 12h 53m 9h 48m 6h 49m 4h 58m

Solar UV radiation in Seinaejoki, Finland §

Seinaejoki 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 Seinaejoki UV Index data.

Average daily maximum UV levels by month for Seinaejoki, 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 6 5 3 2 1 1