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Heat wave in Japan and 3 other countries, 13 to 17 February 2021

Heat wave in Japan and 3 other countries, 13 to 17 February 2021: 116 records at 87 stations, peak on 14 February 2021. Closed.

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

Key Facts

  • Heat wave in Japan and 3 other countries, 13 to 17 February 2021 set or tied 116 station records at 87 stations.
  • It ran from 13 February 2021 to 17 February 2021 (5 days) and its peak day was 14 February 2021.
  • Status: closed.
  • Sukumo set a daily record high minimum temperature of 12.9 C (55.2 F) on 14 February 2021.
  • The busiest day was 14 February 2021 with 61 records.
  • The oldest broken record in the ranked list had stood for 75 years.

Footprint

13 to 17 February 2021
Footprint of Heat wave in Japan and 3 other countries, 13 to 17 February 2021 The area covered by Heat wave in Japan and 3 other countries, 13 to 17 February 2021 is outlined, with 20 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in Japan and 3 other countries, 13 to 17 February 2021 is outlined, with 20 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in Japan and 3 other countries, 13 to 17 February 2021: stations that set records in the event
StationTypeValueDate
SukumoRecord high minimum temperature12.9 C (55.2 F)2021-02-14
OitaRecord high minimum temperature10.6 C (51.1 F)2021-02-14
PartizanskRecord high minimum temperature0.7 C (33.3 F)2021-02-13
Maizuru Reg Met HQRecord high minimum temperature5.8 C (42.4 F)2021-02-14
ChoshiRecord high minimum temperature12.1 C (53.8 F)2021-02-14
OmaezakiRecord high minimum temperature12.0 C (53.6 F)2021-02-14
AjiroRecord high minimum temperature12.0 C (53.6 F)2021-02-14
Rudnaja PristanRecord high maximum temperature6.3 C (43.3 F)2021-02-14
TimiryazevskijRecord high minimum temperature0.2 C (32.4 F)2021-02-13
NagoyaRecord high minimum temperature10.2 C (50.4 F)2021-02-14
OwaseRecord high minimum temperature10.1 C (50.2 F)2021-02-14
IlyinskiyRecord high maximum temperature2.9 C (37.2 F)2021-02-14
AgzuRecord high minimum temperature-7.1 C (19.2 F)2021-02-16
TsurugaRecord high maximum temperature18.5 C (65.3 F)2021-02-13
GifuRecord high minimum temperature9.7 C (49.5 F)2021-02-14
OshimaRecord high minimum temperature11.1 C (52.0 F)2021-02-14
MatsuyamaRecord high minimum temperature8.7 C (47.7 F)2021-02-14
HaboroRecord high minimum temperature1.6 C (34.9 F)2021-02-14
KatsuuraRecord high minimum temperature13.5 C (56.3 F)2021-02-14
UrakawaRecord high minimum temperature0.6 C (33.1 F)2021-02-15

Records per Day

Peak day 61
Records per day during Heat wave in Japan and 3 other countries, 13 to 17 February 2021 Records set or tied each day from 13 February 2021 to 17 February 2021. The most in one day was 61 on 14 February 2021. 0 20 40 60 80 02-1302-1402-1502-1602-17
Records set or tied each day from 13 February 2021 to 17 February 2021. The most in one day was 61 on 14 February 2021.
Records per day during Heat wave in Japan and 3 other countries, 13 to 17 February 2021
DateRecords
2021-02-1328
2021-02-1461
2021-02-1519
2021-02-165
2021-02-173

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in Japan and 3 other countries, 13 to 17 February 2021 ranked by margin
Partizansk, 02-139.9 C (17.8 F)
Agzu, 02-166.8 C (12.2 F)
Timiryazevskij, 02-134.8 C (8.6 F)
Sukumo, 02-143.7 C (6.7 F)
Nagoya, 02-143.3 C (5.9 F)
Haboro, 02-142.8 C (5.0 F)
Oita, 02-142.5 C (4.5 F)
Maizuru Reg Met HQ, 02-142.5 C (4.5 F)
Gifu, 02-142.4 C (4.3 F)
Omaezaki, 02-142.1 C (3.8 F)
Ilyinskiy, 02-142.1 C (3.8 F)
Tsuruga, 02-131.9 C (3.4 F)
Choshi, 02-141.8 C (3.2 F)
Ajiro, 02-141.8 C (3.2 F)
Urakawa, 02-151.5 C (2.7 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 Heat wave in Japan and 3 other countries, 13 to 17 February 2021 116 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 20 40 60 80 0.02.55.07.510.0 Margin (C) Years the old record stood
116 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 Heat wave in Japan and 3 other countries, 13 to 17 February 2021
Margin (C)Years the old record stood
3.762
2.568
2.562
9.923
1.862
2.162
1.862
0.375
3.342
4.849
1.462
6.836
2.151
1.952
2.442
0.762
0.762
2.849
1.549
0.662
1.452
2.342
2.042
1.842
1.349
1.842
1.645
1.345
0.851
9.26
6.329
0.949
2.732
0.249
1.440
0.942
1.442
0.446
0.742
2.825
1.142
1.245
0.645
0.940
2.232
2.523
0.145
0.442
6.24
1.832
1.332
1.725
0.742
1.425
2.617
0.145
0.632
3.11
0.632
2.517
1.425
0.925
1.025
1.225
3.012
1.217
2.014
1.915
0.725
5.04
4.013
0.625
0.425
1.023
0.525
0.823
2.91
0.325
1.619
2.41
2.317
2.61
1.012
0.425
0.623
2.01
4.51
2.56
1.112
1.61
2.01
1.06
3.01
1.712
0.812
0.715
1.212
1.15
0.215
2.01
0.812
1.36
0.612
1.06
0.75
0.71
0.91
0.41
1.61
0.44
0.16
1.41
0.54
0.91
0.31
0.21

Compared With Other Events

Station records per event
Station records in Heat wave in Japan and 3 other countries, 13 to 17 February 2021 compared with similar events
Heat wave in United States and Mexico, 16 January to 14 February 20249,869 records
Heat wave in United States, 28 January to 24 February 20266,528 records
Heat wave in United States and Mexico, 24 May to 19 June 20205,047 records
Heat wave in United States and Mexico, 26 March to 17 April 20213,669 records
Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 20223,626 records
Heat wave in Japan and 3 other countries, 13 to 17 February 2021 (this event)116 records

Every Record Set

20 of 116
Every record set or tied during Heat wave in Japan and 3 other countries, 13 to 17 February 2021, in date order
DateStationRecordValueMarginYears stoodSignificance
2021-02-13PartizanskRecord high minimum temperature0.7 C (33.3 F)9.9 C (17.8 F)2333 of 100 (Routine)
2021-02-13TimiryazevskijRecord high minimum temperature0.2 C (32.4 F)4.8 C (8.6 F)4930 of 100 (Routine)
2021-02-13TsurugaRecord high maximum temperature18.5 C (65.3 F)1.9 C (3.4 F)5227 of 100 (Routine)
2021-02-14SukumoRecord high minimum temperature12.9 C (55.2 F)3.7 C (6.7 F)6235 of 100 (Notable)
2021-02-14OitaRecord high minimum temperature10.6 C (51.1 F)2.5 C (4.5 F)6834 of 100 (Routine)
2021-02-14Maizuru Reg Met HQRecord high minimum temperature5.8 C (42.4 F)2.5 C (4.5 F)6233 of 100 (Routine)
2021-02-14ChoshiRecord high minimum temperature12.1 C (53.8 F)1.8 C (3.2 F)6232 of 100 (Routine)
2021-02-14OmaezakiRecord high minimum temperature12.0 C (53.6 F)2.1 C (3.8 F)6231 of 100 (Routine)
2021-02-14AjiroRecord high minimum temperature12.0 C (53.6 F)1.8 C (3.2 F)6231 of 100 (Routine)
2021-02-14Rudnaja PristanRecord high maximum temperature6.3 C (43.3 F)0.3 C (0.5 F)7531 of 100 (Routine)
2021-02-14NagoyaRecord high minimum temperature10.2 C (50.4 F)3.3 C (5.9 F)4230 of 100 (Routine)
2021-02-14OwaseRecord high minimum temperature10.1 C (50.2 F)1.4 C (2.5 F)6229 of 100 (Routine)
2021-02-14IlyinskiyRecord high maximum temperature2.9 C (37.2 F)2.1 C (3.8 F)5128 of 100 (Routine)
2021-02-14GifuRecord high minimum temperature9.7 C (49.5 F)2.4 C (4.3 F)4227 of 100 (Routine)
2021-02-14OshimaRecord high minimum temperature11.1 C (52.0 F)0.7 C (1.3 F)6227 of 100 (Routine)
2021-02-14MatsuyamaRecord high minimum temperature8.7 C (47.7 F)0.7 C (1.3 F)6227 of 100 (Routine)
2021-02-14HaboroRecord high minimum temperature1.6 C (34.9 F)2.8 C (5.0 F)4926 of 100 (Routine)
2021-02-14KatsuuraRecord high minimum temperature13.5 C (56.3 F)0.6 C (1.1 F)6226 of 100 (Routine)
2021-02-15UrakawaRecord high minimum temperature0.6 C (33.1 F)1.5 C (2.7 F)4926 of 100 (Routine)
2021-02-16AgzuRecord high minimum temperature-7.1 C (19.2 F)6.8 C (12.2 F)3628 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 116 records the event counts. The counts above use the full total.

Download the Data

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.