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Monthly climate in Jalasjaervi, South Ostrobothnia, Finland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Jalasjaervi features a subarctic climate (Dfc).Temperatures typically range between -5 °C (22 °F) and 17 °C (62 °F) through the year, but rarely can drop to -28 °C (-19 °F) or can rise to as high as 32 °C (89 °F).The average annual precipitation amounts to about 678 mm (26.7 inches) and receives 136 rainy days on the 1 mm (0.04 inches) threshold annually.Jalasjaervi enjoys an average of 3207 hours of sunshine throughout the year, and daylight varies from 5 hours 6 minutes to 19 hours 47 minutes per day.

Monthly average temperatures in Jalasjaervi, South Ostrobothnia, Finland §

The warmest months in Jalasjaervi are June, July and August, with daily mean temperatures ranging from 15 to 17 °C (59 - 62 °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, Jalasjaervi 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 Jalasjaervi, South Ostrobothnia, 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
(54°F)		 21°C
(71°F)		 28°C
(82°F)		 32°C
(89°F)		 31°C
(88°F)		 31°C
(88°F)		 24°C
(75°F)		 19°C
(67°F)		 12°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
(69°F)		 15°C
(58°F)		 9°C
(48°F)		 4°C
(39°F)
Average high -2°C
(29°F)		 -2°C
(28°F)		 2°C
(36°F)		 8°C
(46°F)		 14°C
(57°F)		 20°C
(68°F)		 21°C
(70°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
(62°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
(-4°F)		 -21°C
(-6°F)		 -18°C
(-0°F)		 -9°C
(16°F)		 -3°C
(26°F)		 4°C
(40°F)		 6°C
(42°F)		 4°C
(39°F)		 -1°C
(30°F)		 -8°C
(18°F)		 -10°C
(14°F)		 -13°C
(8°F)
Minimum -28°C
(-19°F)		 -28°C
(-17°F)		 -28°C
(-17°F)		 -15°C
(5°F)		 -5°C
(23°F)		 -1°C
(31°F)		 4°C
(39°F)		 3°C
(38°F)		 -4°C
(26°F)		 -12°C
(10°F)		 -16°C
(3°F)		 -26°C
(-15°F)

Compare climate in Jalasjaervi with other places

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

Monthly average precipitation in Jalasjaervi, South Ostrobothnia, Finland §

Jalasjaervi usually has the most precipitation in August, September and October, with an average of 13 rainy days and 77 mm (3.0 inches) of precipitation per month.The driest months in Jalasjaervi are January, February and March. On average, 40 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Jalasjaervi, South Ostrobothnia, 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) 38 (1.5) 39 (1.5) 43 (1.7) 44 (1.7) 58 (2.3) 60 (2.4) 57 (2.2) 92 (3.6) 69 (2.7) 69 (2.7) 59 (2.3) 51 (2.0)
Average precipitation days (≥ 1 mm) 10 8 11 11 10 11 11 14 13 14 10 13

Monthly sunshine hours in Jalasjaervi, South Ostrobothnia, Finland §

The sunniest months in Jalasjaervi are May, June and July, when the sun shines an average of 15 hours 26 minutes a day.Least sunny months in Jalasjaervi: January, November and December receive an average of 1 hours 57 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Jalasjaervi, South Ostrobothnia, 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 43 147 261 349 450 496 474 402 273 169 91 45
Mean daily daylight hours 6h 5m 8h 48m 11h 50m 14h 55m 17h 54m 19h 47m 18h 44m 15h 54m 12h 52m 9h 50m 6h 54m 5h 6m

Solar UV radiation in Jalasjaervi, South Ostrobothnia, Finland §

Jalasjaervi 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 Jalasjaervi UV Index data.

Average daily maximum UV levels by month for Jalasjaervi, South Ostrobothnia, 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