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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Heat wave in Germany and 33 other countries, 20 March to 6 April 2021

Heat wave in Germany and 33 other countries, 20 March to 6 April 2021: 1,700 records at 865 stations, peak on 31 March 2021. Closed.

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

Key Facts

  • Heat wave in Germany and 33 other countries, 20 March to 6 April 2021 set or tied 1,700 station records at 865 stations.
  • It ran from 20 March 2021 to 6 April 2021 (18 days) and its peak day was 31 March 2021.
  • Status: closed.
  • Schwerin set a monthly record high maximum temperature of 23.5 C (74.3 F) on 31 March 2021.
  • The busiest day was 31 March 2021 with 496 records.
  • The oldest broken record in the ranked list had stood for 162 years.

Footprint

20 March to 6 April 2021
Footprint of Heat wave in Germany and 33 other countries, 20 March to 6 April 2021 The area covered by Heat wave in Germany and 33 other countries, 20 March to 6 April 2021 is outlined, with 20 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in Germany and 33 other countries, 20 March to 6 April 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 Germany and 33 other countries, 20 March to 6 April 2021: stations that set records in the event
StationTypeValueDate
Linkoeping-MalmslaettRecord high minimum temperature9.7 C (49.5 F)2021-03-30
SchwerinRecord high maximum temperature23.5 C (74.3 F)2021-03-31
AltastenbergRecord high maximum temperature19.2 C (66.6 F)2021-03-30
SaentisRecord high minimum temperature4.7 C (40.5 F)2021-03-30
Brest-GuipavasRecord high maximum temperature27.6 C (81.7 F)2021-04-01
West SouburgRecord high maximum temperature21.1 C (70.0 F)2021-03-30
SheffieldRecord high maximum temperature23.0 C (73.4 F)2021-03-30
AbbevilleRecord high maximum temperature25.2 C (77.4 F)2021-03-31
DurhamRecord high maximum temperature20.8 C (69.4 F)2021-03-30
Dijon-LongvicRecord high maximum temperature24.9 C (76.8 F)2021-03-31
GreifswaldRecord high maximum temperature20.3 C (68.5 F)2021-03-30
Cet Central EnglandRecord high maximum temperature20.4 C (68.7 F)2021-03-30
BrockenRecord high maximum temperature16.8 C (62.2 F)2021-03-31
ConnaughtRecord high minimum temperature10.2 C (50.4 F)2021-03-29
MarnitzRecord high maximum temperature23.4 C (74.1 F)2021-03-31
Berlin-DahlemRecord high maximum temperature23.9 C (75.0 F)2021-03-31
PotsdamRecord high maximum temperature24.7 C (76.5 F)2021-03-31
LindenbergRecord high maximum temperature23.2 C (73.8 F)2021-03-31
AngermundeRecord high maximum temperature23.2 C (73.8 F)2021-03-31
Lyon - St ExuperyRecord high maximum temperature24.5 C (76.1 F)2021-04-01

Records per Day

Peak day 496
Records per day during Heat wave in Germany and 33 other countries, 20 March to 6 April 2021 Records set or tied each day from 20 March 2021 to 6 April 2021. The most in one day was 496 on 31 March 2021. 0 125 250 375 500 03-2003-2303-2503-2703-2903-3104-0204-0404-06
Records set or tied each day from 20 March 2021 to 6 April 2021. The most in one day was 496 on 31 March 2021.
Records per day during Heat wave in Germany and 33 other countries, 20 March to 6 April 2021
DateRecords
2021-03-204
2021-03-221
2021-03-2372
2021-03-2473
2021-03-2537
2021-03-269
2021-03-2716
2021-03-2849
2021-03-29202
2021-03-30391
2021-03-31496
2021-04-01262
2021-04-0264
2021-04-037
2021-04-0415
2021-04-051
2021-04-061

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in Germany and 33 other countries, 20 March to 6 April 2021 ranked by margin
Brest-Guipavas, 04-017.2 C (13.0 F)
Sheffield, 03-303.9 C (7.0 F)
Lyon - St Exupery, 04-012.6 C (4.7 F)
Abbeville, 03-312.3 C (4.1 F)
Brocken, 03-312.2 C (4.0 F)
Durham, 03-302.1 C (3.8 F)
Greifswald, 03-302.0 C (3.6 F)
Linkoeping-Malmslaett, 03-301.7 C (3.1 F)
Cet Central England, 03-301.6 C (2.9 F)
Marnitz, 03-311.5 C (2.7 F)
Potsdam, 03-311.5 C (2.7 F)
Schwerin, 03-311.4 C (2.5 F)
Dijon-Longvic, 03-311.4 C (2.5 F)
Berlin-Dahlem, 03-311.4 C (2.5 F)
Lindenberg, 03-311.2 C (2.2 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 Germany and 33 other countries, 20 March to 6 April 2021 500 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 50 100 150 200 0.02.04.06.08.0 Margin (C) Years the old record stood
500 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 Germany and 33 other countries, 20 March to 6 April 2021
Margin (C)Years the old record stood
1.4118
1.7118
7.275
0.6108
0.6101
0.498
3.9114
2.375
1.475
2.1128
2.0112
2.2108
1.6114
0.282
1.5108
2.691
1.4108
1.5108
1.2108
1.0108
0.7103
1.0162
0.8110
0.976
0.9134
2.356
3.275
0.766
0.575
0.666
0.1100
0.2126
0.3104
0.3108
3.875
0.991
0.595
7.644
2.053
0.372
0.868
0.295
0.868
2.475
1.383
1.553
0.556
0.756
3.070
2.975
2.175
0.853
1.653
0.366
0.653
1.453
0.853
4.740
2.175
0.156
1.353
0.153
0.453
1.353
0.353
1.653
1.553
4.064
0.264
0.284
2.568
0.683
1.156
2.178
1.353
1.353
0.353
1.253
1.053
0.853
1.253
1.153
1.153
1.353
1.253
0.283
5.056
0.483
0.182
0.783
1.553
0.183
0.456
0.875
0.856
0.384
0.978
2.075
0.675
0.153
0.753
0.953
0.753
1.353
0.853
0.453
0.953
0.553
0.453
0.753
0.953
0.953
0.553
0.453
0.753
0.454
0.544
2.456
5.027
3.259
1.172
0.739
1.768
0.253
0.153
0.553
0.953
0.153
0.153
0.353
0.674
0.453
0.353
0.453
0.253
0.453
0.453
0.153
0.753
0.353
0.583
2.567
1.476
0.753
0.753
1.053
0.175
0.276
0.156
0.256
0.253
4.024
1.075
0.853
0.753
1.375
0.253
0.352
1.032
0.153
0.547
0.767
0.472
3.352
0.867
1.431
0.932
0.532
0.772
0.353
0.532
0.453
0.532
6.615
1.567
2.429
1.140
0.676
2.360
0.632
1.556
3.322
0.331
0.432
3.052
3.048
0.572
1.131
1.168
1.531
2.452
1.168
1.352
0.570
0.731
3.548
1.656
0.768
2.111
0.468

Compared With Other Events

Station records per event
Station records in Heat wave in Germany and 33 other countries, 20 March to 6 April 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 Germany and 33 other countries, 20 March to 6 April 2021 (this event)1,700 records

Every Record Set

20 of 1,700
Every record set or tied during Heat wave in Germany and 33 other countries, 20 March to 6 April 2021, in date order
DateStationRecordValueMarginYears stoodSignificance
2021-03-29ConnaughtRecord high minimum temperature10.2 C (50.4 F)0.2 C (0.4 F)8243 of 100 (Notable)
2021-03-30Linkoeping-MalmslaettRecord high minimum temperature9.7 C (49.5 F)1.7 C (3.1 F)11853 of 100 (Notable)
2021-03-30AltastenbergRecord high maximum temperature19.2 C (66.6 F)0.6 C (1.1 F)10851 of 100 (Notable)
2021-03-30SaentisRecord high minimum temperature4.7 C (40.5 F)0.6 C (1.1 F)10151 of 100 (Notable)
2021-03-30West SouburgRecord high maximum temperature21.1 C (70.0 F)0.4 C (0.7 F)9850 of 100 (Notable)
2021-03-30SheffieldRecord high maximum temperature23.0 C (73.4 F)3.9 C (7.0 F)11450 of 100 (Notable)
2021-03-30DurhamRecord high maximum temperature20.8 C (69.4 F)2.1 C (3.8 F)12845 of 100 (Notable)
2021-03-30GreifswaldRecord high maximum temperature20.3 C (68.5 F)2.0 C (3.6 F)11244 of 100 (Notable)
2021-03-30Cet Central EnglandRecord high maximum temperature20.4 C (68.7 F)1.6 C (2.9 F)11444 of 100 (Notable)
2021-03-31SchwerinRecord high maximum temperature23.5 C (74.3 F)1.4 C (2.5 F)11853 of 100 (Notable)
2021-03-31AbbevilleRecord high maximum temperature25.2 C (77.4 F)2.3 C (4.1 F)7547 of 100 (Notable)
2021-03-31Dijon-LongvicRecord high maximum temperature24.9 C (76.8 F)1.4 C (2.5 F)7545 of 100 (Notable)
2021-03-31BrockenRecord high maximum temperature16.8 C (62.2 F)2.2 C (4.0 F)10844 of 100 (Notable)
2021-03-31MarnitzRecord high maximum temperature23.4 C (74.1 F)1.5 C (2.7 F)10843 of 100 (Notable)
2021-03-31Berlin-DahlemRecord high maximum temperature23.9 C (75.0 F)1.4 C (2.5 F)10842 of 100 (Notable)
2021-03-31PotsdamRecord high maximum temperature24.7 C (76.5 F)1.5 C (2.7 F)10842 of 100 (Notable)
2021-03-31LindenbergRecord high maximum temperature23.2 C (73.8 F)1.2 C (2.2 F)10842 of 100 (Notable)
2021-03-31AngermundeRecord high maximum temperature23.2 C (73.8 F)1.0 C (1.8 F)10842 of 100 (Notable)
2021-04-01Brest-GuipavasRecord high maximum temperature27.6 C (81.7 F)7.2 C (13.0 F)7551 of 100 (Notable)
2021-04-01Lyon - St ExuperyRecord high maximum temperature24.5 C (76.1 F)2.6 C (4.7 F)9142 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 1,700 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.