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Built 2026-10-19 (19 October 2026)

Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021

Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021: 241 records at 112 stations, peak on 13 August 2021. Closed.

Data as of . Last revised (2026-10-18).

Key Facts

  • Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021 set or tied 241 station records at 112 stations.
  • It ran from 6 August 2021 to 20 August 2021 (15 days) and its peak day was 13 August 2021.
  • Status: closed.
  • Nikolaevsk-Na-Amure set a daily record low minimum temperature of 6.3 C (43.3 F) on 10 August 2021.
  • The busiest day was 13 August 2021 with 45 records.
  • The oldest broken record in the ranked list had stood for 129 years.

Footprint

6 to 20 August 2021
Footprint of Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021 The area covered by Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021 is outlined, with 18 of the stations that set records marked, coloured by record type.
The area covered by Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021 is outlined, with 18 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021: stations that set records in the event
StationTypeValueDate
Nikolaevsk-Na-AmureRecord low minimum temperature6.3 C (43.3 F)2021-08-10
PoronajskRecord low minimum temperature6.7 C (44.1 F)2021-08-14
PogranichnyjRecord low maximum temperature18.5 C (65.3 F)2021-08-12
TadotsuRecord low maximum temperature25.5 C (77.9 F)2021-08-13
SagaRecord low maximum temperature24.6 C (76.3 F)2021-08-16
TroickoeRecord low maximum temperature14.2 C (57.6 F)2021-08-08
Komsomolsk-Na-AmureRecord low maximum temperature14.5 C (58.1 F)2021-08-08
HaboroRecord low minimum temperature7.9 C (46.2 F)2021-08-12
MiyakonojoRecord low maximum temperature24.8 C (76.6 F)2021-08-16
Rudnaja PristanRecord low minimum temperature8.3 C (46.9 F)2021-08-12
RumoiRecord low minimum temperature10.4 C (50.7 F)2021-08-12
HitaRecord low maximum temperature25.1 C (77.2 F)2021-08-16
KitamiesashiRecord low minimum temperature8.5 C (47.3 F)2021-08-12
TakayamaRecord low maximum temperature21.4 C (70.5 F)2021-08-13
TernejRecord low minimum temperature9.2 C (48.6 F)2021-08-11
UshibukaRecord low maximum temperature26.3 C (79.3 F)2021-08-15
NobeokaRecord low maximum temperature25.1 C (77.2 F)2021-08-20
SakaiRecord low maximum temperature23.1 C (73.6 F)2021-08-14

Records per Day

Peak day 45
Records per day during Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021 Records set or tied each day from 6 August 2021 to 20 August 2021. The most in one day was 45 on 13 August 2021. 0 13 25 38 50 08-0608-0808-1008-1208-1408-1608-1808-20
Records set or tied each day from 6 August 2021 to 20 August 2021. The most in one day was 45 on 13 August 2021.
Records per day during Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021
DateRecords
2021-08-061
2021-08-074
2021-08-0816
2021-08-0918
2021-08-1018
2021-08-1119
2021-08-1234
2021-08-1345
2021-08-1420
2021-08-159
2021-08-1628
2021-08-1722
2021-08-183
2021-08-192
2021-08-202

Top Records by Margin

Margin over the record replaced
Top records of Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021 ranked by margin
Komsomolsk-Na-Amure, 08-085.5 C (9.9 F)
Troickoe, 08-084.7 C (8.5 F)
Haboro, 08-123.6 C (6.5 F)
Saga, 08-163.5 C (6.3 F)
Tadotsu, 08-133.1 C (5.6 F)
Rumoi, 08-123.0 C (5.4 F)
Takayama, 08-133.0 C (5.4 F)
Kitamiesashi, 08-122.8 C (5.0 F)
Nobeoka, 08-202.7 C (4.9 F)
Hita, 08-162.6 C (4.7 F)
Rudnaja Pristan, 08-112.6 C (4.7 F)
Haboro, 08-102.3 C (4.1 F)
Miyakonojo, 08-162.1 C (3.8 F)
Ternej, 08-112.1 C (3.8 F)
Sakai, 08-142.0 C (3.6 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 Japan and 2 other countries, 6 to 20 August 2021 241 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 38 75 113 150 0.01.53.04.56.0 Margin (C) Years the old record stood
241 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 Japan and 2 other countries, 6 to 20 August 2021
Margin (C)Years the old record stood
0.7129
0.895
3.564
3.164
1.880
4.760
3.662
2.168
5.547
3.062
2.664
0.680
2.859
3.063
2.652
2.359
2.744
1.858
2.152
2.060
1.464
0.176
4.740
1.659
1.562
1.558
3.336
1.064
0.341
3.236
2.156
3.144
0.667
2.755
1.662
1.162
1.162
1.163
2.640
0.664
1.956
1.556
0.863
3.044
1.752
1.756
1.559
1.060
1.450
1.058
0.659
0.760
0.368
1.060
1.660
0.167
2.056
2.144
2.146
2.736
2.436
1.250
0.958
0.858
0.168
0.367
5.518
1.644
0.656
0.263
0.659
1.252
0.955
0.859
2.544
3.032
0.462
0.360
2.336
1.436
2.047
0.856
0.364
1.546
1.640
0.955
1.744
0.162
0.160
2.728
0.851
0.358
0.358
1.452
0.256
1.056
3.934
1.736
1.936
0.750
1.639
0.258
0.262
0.717
2.238
1.444
1.836
2.128
1.836
0.258
2.140
0.422
0.556
1.244
0.255
1.036
1.436
1.728
1.144
0.844
0.150
0.940
2.718
1.628
1.828
2.028
1.822
2.122
1.843
1.138
0.944
0.544
2.028
0.444
0.740
0.540
3.26
1.628
0.151
1.231
0.840
2.719
0.112
0.144
0.344
0.839
1.132
0.536
1.522
0.543
0.340
0.246
1.028
2.74
0.536
0.444
0.240
0.639
1.624
1.128
1.128
2.86
0.140
2.224
0.638
0.144
0.136
0.928
1.630
0.139
2.218
1.518
0.828
1.718
1.518
1.418
0.131
0.734
2.518
0.336
0.728
0.924
0.639
1.220
2.119
1.520
0.330
0.728
1.124
0.528
0.432
0.528
1.324
0.428
0.830
2.218
1.418
0.528
0.132
0.124

Compared With Other Events

Station records per event
Station records in Cold outbreak in Japan and 2 other countries, 6 to 20 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 Japan and 2 other countries, 6 to 20 August 2021 (this event)241 records

Every Record Set

20 of 241
Every record set or tied during Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021, in date order
DateStationRecordValueMarginYears stoodSignificance
2021-08-08TroickoeRecord low maximum temperature14.2 C (57.6 F)4.7 C (8.5 F)6037 of 100 (Notable)
2021-08-08Komsomolsk-Na-AmureRecord low maximum temperature14.5 C (58.1 F)5.5 C (9.9 F)4736 of 100 (Notable)
2021-08-10Nikolaevsk-Na-AmureRecord low minimum temperature6.3 C (43.3 F)0.7 C (1.3 F)12942 of 100 (Notable)
2021-08-10HaboroRecord low maximum temperature16.6 C (61.9 F)2.3 C (4.1 F)5932 of 100 (Routine)
2021-08-11Rudnaja PristanRecord low minimum temperature8.4 C (47.1 F)2.6 C (4.7 F)5233 of 100 (Routine)
2021-08-11TernejRecord low minimum temperature9.2 C (48.6 F)2.1 C (3.8 F)5232 of 100 (Routine)
2021-08-12PogranichnyjRecord low maximum temperature18.5 C (65.3 F)1.8 C (3.2 F)8039 of 100 (Notable)
2021-08-12HaboroRecord low minimum temperature7.9 C (46.2 F)3.6 C (6.5 F)6236 of 100 (Notable)
2021-08-12RumoiRecord low minimum temperature10.4 C (50.7 F)3.0 C (5.4 F)6235 of 100 (Notable)
2021-08-12Rudnaja PristanRecord low minimum temperature8.3 C (46.9 F)0.6 C (1.1 F)8035 of 100 (Notable)
2021-08-12KitamiesashiRecord low minimum temperature8.5 C (47.3 F)2.8 C (5.0 F)5934 of 100 (Routine)
2021-08-13TadotsuRecord low maximum temperature25.5 C (77.9 F)3.1 C (5.6 F)6439 of 100 (Notable)
2021-08-13TakayamaRecord low maximum temperature21.4 C (70.5 F)3.0 C (5.4 F)6334 of 100 (Routine)
2021-08-14PoronajskRecord low minimum temperature6.7 C (44.1 F)0.8 C (1.4 F)9540 of 100 (Notable)
2021-08-14SakaiRecord low maximum temperature23.1 C (73.6 F)2.0 C (3.6 F)6031 of 100 (Routine)
2021-08-15UshibukaRecord low maximum temperature26.3 C (79.3 F)1.8 C (3.2 F)5832 of 100 (Routine)
2021-08-16SagaRecord low maximum temperature24.6 C (76.3 F)3.5 C (6.3 F)6439 of 100 (Notable)
2021-08-16MiyakonojoRecord low maximum temperature24.8 C (76.6 F)2.1 C (3.8 F)6836 of 100 (Notable)
2021-08-16HitaRecord low maximum temperature25.1 C (77.2 F)2.6 C (4.7 F)6435 of 100 (Notable)
2021-08-20NobeokaRecord low maximum temperature25.1 C (77.2 F)2.7 C (4.9 F)4432 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 241 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 2026-10-18. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.