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Seinäjoki December Weather

Averages and records for weather in Seinäjoki, Finland in the month of December.

Typical Seinäjoki December Weather 1991–2020
Average daily high	-0.8 °C
Average daily low	-6.4 °C
Average monthly precipitation	4.0 cm
Daily chance of precipitation	61.3%

Seinäjoki December Weather Records 1959–2024
Highest temperature	9.1 °C	December 21, 2015
Lowest temperature	-37.3 °C	December 30, 1978
Highest daily low	6.2 °C	December 9, 2006
Lowest daily high	-27.9 °C	December 23, 1967
Hottest average high temperature	4.3 °C	2006
Coldest average high temperature	-10.3 °C	1978
Most daily precipitation	1.8 cm	December 12, 1996
Most monthly precipitation	7.5 cm	1981

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°C)		Record (°C)
Day	High	Low	High	Low
December 1	0.6	-4.3	6.7	-28.4
December 2	0.5	-4.3	7.2	-30.7
December 3	0.4	-4.5	7.7	-20.3
December 4	0.4	-4.6	6.5	-21.2
December 5	0.4	-4.6	7.2	-31.4
December 6	0.3	-4.7	8.6	-32.4
December 7	0.2	-4.8	7.7	-31.2
December 8	0.1	-5.0	7.0	-33.2
December 9	-0.1	-5.2	8.5	-30.9
December 10	-0.2	-5.5	7.6	-28.4
December 11	-0.4	-5.7	6.9	-28.4
December 12	-0.5	-5.8	6.9	-26.4
December 13	-0.6	-6.0	5.4	-26.0
December 14	-0.7	-6.1	6.8	-24.7
December 15	-0.8	-6.3	6.1	-28.9
December 16	-0.9	-6.4	5.3	-33.3
December 17	-0.9	-6.5	7.0	-32.5
December 18	-1.0	-6.6	4.7	-30.1
December 19	-1.1	-6.8	5.7	-29.9
December 20	-1.2	-6.9	8.9	-31.5
December 21	-1.3	-7.0	9.1	-26.3
December 22	-1.4	-7.2	5.6	-31.7
December 23	-1.6	-7.4	5.0	-33.3
December 24	-1.6	-7.6	7.0	-29.3
December 25	-1.7	-7.7	6.8	-31.4
December 26	-1.8	-7.8	6.2	-30.4
December 27	-1.8	-8.0	6.6	-29.9
December 28	-1.9	-8.1	5.9	-32.3
December 29	-1.9	-8.1	5.8	-32.2
December 30	-2.0	-8.2	5.2	-37.3
December 31	-2.0	-8.3	5.6	-31.5

Weather Station Details

Years	Station	Coordinates
1959–2024	Seinajoki Pelmaa	location