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Built 2026-10-19 (19 October 2026)

Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021

Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021: 127 records at 115 stations, peak on 4 August 2021. Closed.

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

Key Facts

  • Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021 set or tied 127 station records at 115 stations.
  • It ran from 31 July 2021 to 6 August 2021 (7 days) and its peak day was 4 August 2021.
  • Status: closed.
  • Tallinn set a daily record low minimum temperature of 6.1 C (43.0 F) on 6 August 2021.
  • The busiest day was 4 August 2021 with 36 records.
  • The oldest broken record in the ranked list had stood for 87 years.

Footprint

31 July to 6 August 2021
Footprint of Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021 The area covered by Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021 is outlined, with 20 of the stations that set records marked, coloured by record type.
The area covered by Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021 is outlined, with 20 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021: stations that set records in the event
StationTypeValueDate
TallinnRecord low minimum temperature6.1 C (43.0 F)2021-08-06
MontelimarRecord low maximum temperature20.9 C (69.6 F)2021-08-04
Marseilles-MarignaneRecord low maximum temperature22.4 C (72.3 F)2021-08-04
San Sebastian - IgueldoRecord low maximum temperature17.0 C (62.6 F)2021-07-31
NarvaRecord low minimum temperature4.6 C (40.3 F)2021-08-06
Poitiers - BiardRecord low maximum temperature18.3 C (64.9 F)2021-08-03
FalsterboRecord low minimum temperature9.9 C (49.8 F)2021-08-05
Hiddensee-VitteRecord low minimum temperature11.9 C (53.4 F)2021-08-04
Vantaa Helsinki-Vantaan LentoaRecord low minimum temperature5.2 C (41.4 F)2021-08-05
Mora_ARecord low minimum temperature2.2 C (36.0 F)2021-08-04
VigraRecord low minimum temperature7.0 C (44.6 F)2021-08-04
Uppsala_FlygplatsRecord low minimum temperature4.6 C (40.3 F)2021-08-06
Jerez de la FronteraRecord low minimum temperature11.7 C (53.1 F)2021-08-01
Borlange FlygplatsRecord low maximum temperature15.0 C (59.0 F)2021-08-02
OrlandRecord low minimum temperature6.4 C (43.5 F)2021-08-04
NorderonRecord low minimum temperature5.7 C (42.3 F)2021-08-04
Hanko RussaroRecord low minimum temperature10.9 C (51.6 F)2021-08-05
NavacerradaRecord low minimum temperature4.5 C (40.1 F)2021-08-01
Nantes-BouguenaisRecord low maximum temperature17.4 C (63.3 F)2021-08-03
GenthinRecord low minimum temperature7.3 C (45.1 F)2021-08-03

Records per Day

Peak day 36
Records per day during Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021 Records set or tied each day from 31 July 2021 to 6 August 2021. The most in one day was 36 on 4 August 2021. 0 10 20 30 40 07-3108-0108-0208-0308-0408-0508-06
Records set or tied each day from 31 July 2021 to 6 August 2021. The most in one day was 36 on 4 August 2021.
Records per day during Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021
DateRecords
2021-07-3110
2021-08-0117
2021-08-0214
2021-08-0328
2021-08-0436
2021-08-0516
2021-08-066

Top Records by Margin

Margin over the record replaced
Top records of Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021 ranked by margin
Borlange Flygplats, 08-023.3 C (5.9 F)
Tallinn, 08-062.3 C (4.1 F)
Narva, 08-062.3 C (4.1 F)
Nantes-Bouguenais, 08-032.0 C (3.6 F)
Jerez de la Frontera, 08-011.9 C (3.4 F)
Poitiers - Biard, 08-031.3 C (2.3 F)
Vantaa Helsinki-Vantaan Lentoa, 08-050.9 C (1.6 F)
Montelimar, 08-040.8 C (1.4 F)
Mora_A, 08-040.8 C (1.4 F)
Vigra, 08-040.8 C (1.4 F)
Uppsala_Flygplats, 08-060.8 C (1.4 F)
Hanko Russaro, 08-050.7 C (1.3 F)
Marseilles-Marignane, 08-040.6 C (1.1 F)
Orland, 08-040.6 C (1.1 F)
Norderon, 08-040.6 C (1.1 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

Margin against age of the broken record in Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021 127 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. 0 25 50 75 100 0.01.02.03.04.0 Margin (C) Years the old record stood
127 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 12 other countries, 31 July to 6 August 2021
Margin (C)Years the old record stood
2.380
0.887
0.682
0.280
2.356
1.364
0.172
0.968
0.560
0.864
0.863
0.860
1.943
0.756
0.659
3.335
0.656
2.043
0.656
0.556
1.844
0.356
0.644
0.159
1.839
0.944
0.752
0.944
0.356
1.143
1.135
3.122
2.438
2.834
0.439
0.542
3.919
0.444
1.232
0.938
0.944
0.144
1.639
2.034
0.443
3.123
0.734
2.523
1.043
0.640
0.138
1.832
1.212
0.842
1.032
0.232
0.534
0.835
0.332
1.032
0.438
1.034
2.319
1.032
0.238
0.436
0.532
2.724
0.634
0.139
0.136
0.232
0.320
0.616
0.732
1.919
1.920
2.214
0.132
0.128
0.86
0.420
1.019
0.819
1.219
1.50
1.216
0.619
0.926
2.312
0.422
0.820
1.82
0.723
0.86
1.512
0.92
0.220
0.320
1.115
0.716
1.22
0.86
0.323
0.115
1.42
0.46
0.36
0.16
0.52
0.415
0.216
0.82
0.215
0.60
0.511
0.415
0.80
1.44
0.316
0.42
0.111
0.22
0.76
0.10
0.80
0.10

Compared With Other Events

Station records per event
Station records in Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021 compared with similar events
Cold outbreak in United States and Mexico, 6 February to 5 March 202112,118 records
Cold outbreak in United States and Mexico, 13 October to 5 November 20209,841 records
Cold outbreak in United States and Mexico, 23 December 2017 to 8 January 20188,263 records
Cold outbreak in United States and Mexico, 3 to 23 January 20247,675 records
Cold outbreak in United States, 15 January to 10 February 20265,568 records
Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021 (this event)127 records

Every Record Set

20 of 127
Every record set or tied during Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021, in date order
DateStationRecordValueMarginYears stoodSignificance
2021-07-31San Sebastian - IgueldoRecord low maximum temperature17.0 C (62.6 F)0.2 C (0.4 F)8034 of 100 (Routine)
2021-08-01Jerez de la FronteraRecord low minimum temperature11.7 C (53.1 F)1.9 C (3.4 F)4326 of 100 (Routine)
2021-08-01NavacerradaRecord low minimum temperature4.5 C (40.1 F)0.5 C (0.9 F)5624 of 100 (Routine)
2021-08-02Borlange FlygplatsRecord low maximum temperature15.0 C (59.0 F)3.3 C (5.9 F)3525 of 100 (Routine)
2021-08-03Poitiers - BiardRecord low maximum temperature18.3 C (64.9 F)1.3 C (2.3 F)6432 of 100 (Routine)
2021-08-03Nantes-BouguenaisRecord low maximum temperature17.4 C (63.3 F)2.0 C (3.6 F)4324 of 100 (Routine)
2021-08-03GenthinRecord low minimum temperature7.3 C (45.1 F)0.6 C (1.1 F)5624 of 100 (Routine)
2021-08-04MontelimarRecord low maximum temperature20.9 C (69.6 F)0.8 C (1.4 F)8737 of 100 (Notable)
2021-08-04Marseilles-MarignaneRecord low maximum temperature22.4 C (72.3 F)0.6 C (1.1 F)8235 of 100 (Notable)
2021-08-04Hiddensee-VitteRecord low minimum temperature11.9 C (53.4 F)0.5 C (0.9 F)6029 of 100 (Routine)
2021-08-04Mora_ARecord low minimum temperature2.2 C (36.0 F)0.8 C (1.4 F)6428 of 100 (Routine)
2021-08-04VigraRecord low minimum temperature7.0 C (44.6 F)0.8 C (1.4 F)6327 of 100 (Routine)
2021-08-04OrlandRecord low minimum temperature6.4 C (43.5 F)0.6 C (1.1 F)5925 of 100 (Routine)
2021-08-04NorderonRecord low minimum temperature5.7 C (42.3 F)0.6 C (1.1 F)5625 of 100 (Routine)
2021-08-05FalsterboRecord low minimum temperature9.9 C (49.8 F)0.1 C (0.2 F)7230 of 100 (Routine)
2021-08-05Vantaa Helsinki-Vantaan LentoaRecord low minimum temperature5.2 C (41.4 F)0.9 C (1.6 F)6829 of 100 (Routine)
2021-08-05Hanko RussaroRecord low minimum temperature10.9 C (51.6 F)0.7 C (1.3 F)5625 of 100 (Routine)
2021-08-06TallinnRecord low minimum temperature6.1 C (43.0 F)2.3 C (4.1 F)8040 of 100 (Notable)
2021-08-06NarvaRecord low minimum temperature4.6 C (40.3 F)2.3 C (4.1 F)5633 of 100 (Routine)
2021-08-06Uppsala_FlygplatsRecord low minimum temperature4.6 C (40.3 F)0.8 C (1.4 F)6027 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 127 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.