Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021

Name: Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021
Start: 2021-11-25
End: 2021-12-10
Location: Sweden, Finland, Norway, Estonia, Russia, Latvia, Belarus, Lithuania, Poland, Denmark

Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021: 351 records at 159 stations, peak on 5 December 2021. Closed.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Key Facts

Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021 set or tied 351 station records at 159 stations.
It ran from 25 November 2021 to 10 December 2021 (16 days) and its peak day was 5 December 2021.
Status: closed.
Visby_Flygplats set a daily record low minimum temperature of -12.4 C (9.7 F) on 4 December 2021.
The busiest day was 6 December 2021 with 99 records.
The oldest broken record in the ranked list had stood for 119 years.

Footprint

25 November to 10 December 2021

The area covered by Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021 is outlined, with 15 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021: stations that set records in the event
Station	Type	Value	Date
Visby_Flygplats	Record low minimum temperature	-12.4 C (9.7 F)	2021-12-04
Olands Norra Udde	Record low minimum temperature	-9.3 C (15.3 F)	2021-12-03
Tartu-Toravere	Record low maximum temperature	-20.7 C (-5.3 F)	2021-12-07
Jomala Maarianhaminan Lentoase	Record low maximum temperature	-10.2 C (13.6 F)	2021-12-06
Lemland Nyhamn	Record low maximum temperature	-7.7 C (18.1 F)	2021-12-06
Halmstad Flygflottilj	Record low minimum temperature	-11.5 C (11.3 F)	2021-12-03
Kuressaare	Record low maximum temperature	-10.5 C (13.1 F)	2021-12-06
Narva	Record low minimum temperature	-24.9 C (-12.8 F)	2021-12-06
Soderarm	Record low maximum temperature	-6.0 C (21.2 F)	2021-12-06
Naimakka	Record low minimum temperature	-43.8 C (-46.8 F)	2021-12-06
Landsort	Record low minimum temperature	-10.5 C (13.1 F)	2021-12-07
Pori Porin Lentoasema	Record low maximum temperature	-13.9 C (7.0 F)	2021-12-05
Vaike-Maarja	Record low minimum temperature	-25.7 C (-14.3 F)	2021-12-06
Kunda	Record low minimum temperature	-23.7 C (-10.7 F)	2021-12-07
Voru	Record low maximum temperature	-19.5 C (-3.1 F)	2021-12-07

Records per Day

Peak day 89

Records set or tied each day from 25 November 2021 to 10 December 2021. The most in one day was 99 on 6 December 2021.

Records per day during Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021
Date	Records
2021-12-02	8
2021-12-03	16
2021-12-04	11
2021-12-05	89
2021-12-06	99
2021-12-07	88
2021-12-08	30
2021-12-09	9
2021-12-10	1

Top Records by Margin

Margin over the record replaced

Top records of Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021 ranked by margin
Vaike-Maarja, 12-06	9.6 C (17.3 F)
Halmstad Flygflottilj, 12-03	7.1 C (12.8 F)
Tartu-Toravere, 12-07	6.6 C (11.9 F)
Narva, 12-06	6.2 C (11.2 F)
Jomala Maarianhaminan Lentoase, 12-06	5.8 C (10.4 F)
Pori Porin Lentoasema, 12-05	5.6 C (10.1 F)
Kunda, 12-07	5.2 C (9.4 F)
Kunda, 12-06	5.1 C (9.2 F)
Visby_Flygplats, 12-08	4.8 C (8.6 F)
Lemland Nyhamn, 12-06	4.7 C (8.5 F)
Kuressaare, 12-06	4.4 C (7.9 F)
Voru, 12-07	3.6 C (6.5 F)
Narva, 12-06	3.5 C (6.3 F)
Tartu-Toravere, 12-07	3.3 C (5.9 F)
Soderarm, 12-06	3.0 C (5.4 F)

Margin is how far the new value is beyond the record it replaced. Ties are not shown.

Margin Against Age of the Broken Record

351 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right.

Margin against age of the broken record in Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021
Margin (C)	Years the old record stood
2.4	119
4.8	62
6.6	62
1.0	96
5.8	62
4.7	62
0.7	96
4.4	62
7.1	52
6.2	62
3.5	62
1.5	79
3.0	62
2.0	58
5.2	62
9.6	48
5.6	62
5.1	62
3.3	62
3.6	62
1.3	76
1.6	76
3.6	62
7.5	48
2.7	62
2.8	62
4.3	66
0.8	76
7.8	32
4.7	48
7.2	48
3.8	62
5.4	40
9.2	34
6.7	48
2.3	62
3.2	62
2.2	66
0.8	66
0.7	66
2.3	62
1.4	62
5.5	48
6.4	40
1.6	62
10.6	23
6.0	48
3.6	62
0.7	62
5.5	40
2.3	62
4.0	62
8.0	40
7.1	40
2.8	62
3.3	55
1.4	62
0.1	62
2.2	62
4.8	40
0.1	62
0.1	62
1.6	62
1.4	62
3.1	40
2.6	62
9.0	48
5.5	40
2.5	60
2.5	54
10.3	20
7.9	52
3.3	48
1.2	62
4.0	48
1.7	62
1.7	62
3.0	62
5.0	40
1.8	62
3.3	54
2.6	52
2.9	52
8.8	23
5.1	44
6.1	26
0.9	63
0.3	55
3.3	40
2.9	48
3.9	40
1.1	62
1.3	62
1.7	62
0.4	63
0.9	63
4.9	52
0.3	62
8.7	23
1.6	60
3.8	36
1.1	62
1.4	48
0.4	54
3.2	48
10.4	19
3.0	48
3.8	48
3.1	52
6.2	36
10.3	22
0.3	55
3.3	40
0.9	48
2.0	40
1.8	48
2.5	48
0.1	63
1.8	48
1.3	52
3.7	48
2.4	48
0.8	52
2.2	40
2.9	40
3.2	48
1.2	55
0.3	55
1.4	48
2.2	43
2.8	40
2.0	40
2.2	48
2.7	40
1.6	48
8.5	19
1.3	48
0.9	59
8.7	19
1.5	48
2.1	40
1.0	52
0.7	52
2.6	40
2.8	40
1.5	52
0.6	59
1.3	44
1.8	40
3.4	34
4.1	34
0.8	52
1.7	52
1.2	48
0.7	51
0.4	48
1.7	48
2.3	48
8.1	19
0.7	52
1.7	52
0.1	52
1.0	52
1.3	40
1.4	40
1.1	48
0.5	48
0.9	48
1.8	40
0.7	48
5.7	35
5.8	26
0.4	40
0.2	48
1.0	48
0.5	48
0.8	48
0.1	52
0.7	40
2.9	40
8.2	22
1.1	48
2.1	40
0.1	48
1.4	40
1.0	40
0.5	48
1.5	40
3.2	40
0.5	48
0.3	48
0.5	48
0.7	40
0.1	48
0.6	48
0.5	43
0.6	52
0.4	48
0.4	48
1.3	40

Compared With Other Events

Station records per event

Station records in Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021 compared with similar events
Cold outbreak in United States and Mexico, 6 February to 5 March 2021	12,118 records
Cold outbreak in United States and Mexico, 13 October to 5 November 2020	9,841 records
Cold outbreak in United States and Mexico, 23 December 2017 to 8 January 2018	8,263 records
Cold outbreak in United States and Mexico, 3 to 23 January 2024	7,675 records
Cold outbreak in United States, 15 January to 10 February 2026	5,568 records
Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021 (this event)	351 records

Every Record Set

20 of 351

Every record set or tied during Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2021-12-03	Olands Norra Udde	Record low minimum temperature	-9.3 C (15.3 F)	1.0 C (1.8 F)	96	40 of 100 (Notable)
2021-12-03	Halmstad Flygflottilj	Record low minimum temperature	-11.5 C (11.3 F)	7.1 C (12.8 F)	52	38 of 100 (Notable)
2021-12-04	Visby_Flygplats	Record low minimum temperature	-12.4 C (9.7 F)	2.4 C (4.3 F)	119	46 of 100 (Notable)
2021-12-04	Olands Norra Udde	Record low minimum temperature	-9.1 C (15.6 F)	0.7 C (1.3 F)	96	39 of 100 (Notable)
2021-12-05	Pori Porin Lentoasema	Record low maximum temperature	-13.9 C (7.0 F)	5.6 C (10.1 F)	62	34 of 100 (Routine)
2021-12-06	Jomala Maarianhaminan Lentoase	Record low maximum temperature	-10.2 C (13.6 F)	5.8 C (10.4 F)	62	39 of 100 (Notable)
2021-12-06	Lemland Nyhamn	Record low maximum temperature	-7.7 C (18.1 F)	4.7 C (8.5 F)	62	39 of 100 (Notable)
2021-12-06	Kuressaare	Record low maximum temperature	-10.5 C (13.1 F)	4.4 C (7.9 F)	62	38 of 100 (Notable)
2021-12-06	Narva	Record low minimum temperature	-24.9 C (-12.8 F)	6.2 C (11.2 F)	62	37 of 100 (Notable)
2021-12-06	Narva	Record low maximum temperature	-18.0 C (-0.4 F)	3.5 C (6.3 F)	62	35 of 100 (Notable)
2021-12-06	Soderarm	Record low maximum temperature	-6.0 C (21.2 F)	3.0 C (5.4 F)	62	35 of 100 (Notable)
2021-12-06	Naimakka	Record low minimum temperature	-43.8 C (-46.8 F)	2.0 C (3.6 F)	58	35 of 100 (Notable)
2021-12-06	Vaike-Maarja	Record low minimum temperature	-25.7 C (-14.3 F)	9.6 C (17.3 F)	48	34 of 100 (Routine)
2021-12-06	Kunda	Record low minimum temperature	-22.0 C (-7.6 F)	5.1 C (9.2 F)	62	33 of 100 (Routine)
2021-12-07	Tartu-Toravere	Record low maximum temperature	-20.7 C (-5.3 F)	6.6 C (11.9 F)	62	40 of 100 (Notable)
2021-12-07	Landsort	Record low minimum temperature	-10.5 C (13.1 F)	1.5 C (2.7 F)	79	35 of 100 (Notable)
2021-12-07	Kunda	Record low minimum temperature	-23.7 C (-10.7 F)	5.2 C (9.4 F)	62	34 of 100 (Routine)
2021-12-07	Tartu-Toravere	Record low minimum temperature	-27.6 C (-17.7 F)	3.3 C (5.9 F)	62	33 of 100 (Routine)
2021-12-07	Voru	Record low maximum temperature	-19.5 C (-3.1 F)	3.6 C (6.5 F)	62	33 of 100 (Routine)
2021-12-08	Visby_Flygplats	Record low minimum temperature	-12.8 C (9.0 F)	4.8 C (8.6 F)	62	41 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 351 records the event counts. The counts above use the full total.

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Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.