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Weather Records on 21 August 1912

50 weather records were set or tied worldwide on 21 August 1912. Highest significance: Visby_Flygplats, SE.

Key Facts for 21 August 1912

  • On 21 August 1912, 50 weather records were set or tied at long-record stations worldwide.
  • 8 were record highs and 8 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 1 monthly and 49 daily.
  • Visby_Flygplats set a daily record precipitation of 56.4 mm (2.2 in) on 21 August 1912.
  • Across 164 earlier years (1800 to 2025) the same calendar date averaged 447 records.

Record Map

50 stations
Weather records on 21 August 1912 50 station records on 21 August 1912 are marked on the map, coloured by record type.
50 station records on 21 August 1912 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 21 August 1912: highest significance records shown on the map
StationCountryTypeValueSignificance
Visby_FlygplatsSwedenRecord daily precipitation56.4 mm (2.2 in)51 of 100 (Notable)
KristianstadSwedenRecord daily precipitation38.0 mm (1.5 in)49 of 100 (Notable)
HarnosandSwedenRecord daily precipitation61.7 mm (2.4 in)48 of 100 (Notable)
HoburgSwedenRecord daily precipitation31.5 mm (1.2 in)42 of 100 (Notable)
LandsortSwedenRecord daily precipitation27.9 mm (1.1 in)39 of 100 (Notable)
StockholmSwedenRecord daily precipitation36.3 mm (1.4 in)35 of 100 (Notable)
Uppsala_AutSwedenRecord daily precipitation27.2 mm (1.1 in)30 of 100 (Routine)
ScheveningenNetherlandsRecord daily precipitation34.7 mm (1.4 in)28 of 100 (Routine)
SandvigDenmarkRecord daily precipitation49.4 mm (1.9 in)22 of 100 (Routine)
Melbourne Regional OfficeAustraliaRecord high maximum temperature22.0 C (71.6 F)21 of 100 (Routine)
HoofddorpNetherlandsRecord daily precipitation20.5 mm (0.8 in)20 of 100 (Routine)
VarbergSwedenRecord daily precipitation23.7 mm (0.9 in)20 of 100 (Routine)
Vasteras-HassloSwedenRecord daily precipitation26.7 mm (1.1 in)20 of 100 (Routine)
BjurakerSwedenRecord high minimum temperature14.0 C (57.2 F)19 of 100 (Routine)
Cape Otway LighthouseAustraliaRecord high maximum temperature21.1 C (70.0 F)17 of 100 (Routine)
HalmstadSwedenRecord daily precipitation53.5 mm (2.1 in)17 of 100 (Routine)
Orskar_ASwedenRecord daily precipitation12.5 mm (0.5 in)17 of 100 (Routine)
GavleSwedenRecord high minimum temperature15.0 C (59.0 F)16 of 100 (Routine)
Cape Otway LighthouseAustraliaRecord high minimum temperature12.5 C (54.5 F)15 of 100 (Routine)
SydneyCanadaRecord low minimum temperature4.4 C (39.9 F)15 of 100 (Routine)
Nidingen ASwedenRecord daily precipitation19.8 mm (0.8 in)15 of 100 (Routine)
OrebroSwedenRecord daily precipitation26.8 mm (1.1 in)15 of 100 (Routine)
WellandCanadaRecord daily precipitation13.2 mm (0.5 in)14 of 100 (Routine)
Linkoeping-MalmslaettSwedenRecord daily precipitation21.4 mm (0.8 in)14 of 100 (Routine)
Nora_DSwedenRecord daily precipitation24.7 mm (1.0 in)14 of 100 (Routine)
Anticosti SW PointCanadaRecord low maximum temperature11.1 C (52.0 F)13 of 100 (Routine)
RivaItalyRecord daily precipitation16.7 mm (0.7 in)13 of 100 (Routine)
ZametchinoRussiaRecord daily precipitation13.2 mm (0.5 in)13 of 100 (Routine)
Olands Norra UddeSwedenRecord daily precipitation17.1 mm (0.7 in)13 of 100 (Routine)
Dublin Phoenix ParkIrelandRecord low maximum temperature15.6 C (60.1 F)12 of 100 (Routine)
Paarl (Tnk)South AfricaRecord daily precipitation28.2 mm (1.1 in)12 of 100 (Routine)
MalmesburySouth AfricaRecord daily precipitation13.2 mm (0.5 in)11 of 100 (Routine)
Hano_ASwedenRecord daily precipitation5.1 mm (0.20 in)11 of 100 (Routine)
Olympia Priest Pt ParkUnited StatesRecord high maximum temperature31.7 C (89.1 F)11 of 100 (Routine)
Piketberg (Pol)South AfricaRecord daily precipitation16.8 mm (0.7 in)10 of 100 (Routine)
Wilmington Wb CityUnited StatesRecord daily precipitation20.1 mm (0.8 in)10 of 100 (Routine)
MalungSwedenRecord daily precipitation26.2 mm (1.0 in)9 of 100 (Routine)
Svenska HogarnaSwedenRecord daily precipitation11.8 mm (0.5 in)9 of 100 (Routine)
SvegSwedenRecord high minimum temperature11.5 C (52.7 F)9 of 100 (Routine)
BakuAzerbaijanRecord daily precipitation0.7 mm (0.03 in)8 of 100 (Routine)
Coleraine (Wondo Dale)AustraliaRecord daily precipitation15.2 mm (0.6 in)7 of 100 (Routine)
Munchen-NymphenburgGermanyRecord daily precipitation12.4 mm (0.5 in)6 of 100 (Routine)
Little Rock St CapitolUnited StatesRecord daily precipitation37.6 mm (1.5 in)6 of 100 (Routine)
PiteaSwedenRecord low maximum temperature12.5 C (54.5 F)5 of 100 (Routine)
Tulbagh (Pol)South AfricaRecord daily precipitation6.9 mm (0.27 in)4 of 100 (Routine)
Anticosti SW PointCanadaRecord low minimum temperature5.6 C (42.1 F)2 of 100 (Routine)
HalifaxCanadaRecord low minimum temperature7.2 C (45.0 F)2 of 100 (Routine)
GalwayIrelandRecord low maximum temperature16.7 C (62.1 F)2 of 100 (Routine)
PortlandUnited StatesRecord low minimum temperature10.0 C (50.0 F)2 of 100 (Routine)
Portland Rfc CityUnited StatesRecord high maximum temperature32.8 C (91.0 F)1 of 100 (Routine)

Counts by Type and Timescale

50 records
Records on 21 August 1912 by type Records set or tied on 21 August 1912 by type: Highest daily maximum 4, Lowest daily maximum 4, Highest daily minimum 4, Lowest daily minimum 4, Heaviest daily rainfall 34. 010203040Highest daily maximum: 4Lowest daily maximum: 4Highest daily minimum: 4Lowest daily minimum: 4Heaviest daily rainfall: 34Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 21 August 1912 by type: Highest daily maximum 4, Lowest daily maximum 4, Highest daily minimum 4, Lowest daily minimum 4, Heaviest daily rainfall 34.
Records on 21 August 1912 by type
Record typeRecords
Highest daily maximum4
Lowest daily maximum4
Highest daily minimum4
Lowest daily minimum4
Heaviest daily rainfall34
Heaviest daily snowfall0
Deepest snow cover0
Records on 21 August 1912 by timescale Records on 21 August 1912 by timescale: all-time 0, monthly 1, daily 49. 0204060all-time: 0monthly: 1daily: 49all-timemonthlydaily
Records on 21 August 1912 by timescale: all-time 0, monthly 1, daily 49.
Records on 21 August 1912 by timescale
TimescaleRecords
all-time0
monthly1
daily49

How Much Records Were Beaten By

45 broken records
Histogram of margins by which records were beaten on 21 August 1912 Margins by which the 45 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 43.2. Ties are not counted. 0102030400 to 10: 3610 to 20: 520 to 30: 130 to 40: 240 to 50: 10 to 1010 to 2020 to 3030 to 4040 to 50
Margins by which the 45 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 43.2. Ties are not counted.
Histogram of margins by which records were beaten on 21 August 1912
MarginRecords
0 to 1036
10 to 205
20 to 301
30 to 402
40 to 501

Top 20 by Significance

21 August 1912
Top 20 records on 21 August 1912 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
21 August 1912Visby_Flygplats, SEdaily rain56.4 mm (2.2 in)43.2 mm (1.7 in)20 years51 of 100 (Notable)
21 August 1912Kristianstad, SEdaily rain38.0 mm (1.5 in)32.3 mm (1.3 in)22 years49 of 100 (Notable)
21 August 1912Harnosand, SEdaily rain61.7 mm (2.4 in)37.1 mm (1.5 in)17 years48 of 100 (Notable)
21 August 1912Hoburg, SEdaily rain31.5 mm (1.2 in)17.3 mm (0.7 in)20 years42 of 100 (Notable)
21 August 1912Landsort, SEdaily rain27.9 mm (1.1 in)20.1 mm (0.8 in)26 years39 of 100 (Notable)
21 August 1912Stockholm, SEdaily rain36.3 mm (1.4 in)19.2 mm (0.8 in)9 years35 of 100 (Notable)
21 August 1912Uppsala_Aut, SEdaily rain27.2 mm (1.1 in)13.3 mm (0.5 in)9 years30 of 100 (Routine)
21 August 1912Scheveningen, NLdaily rain34.7 mm (1.4 in)15.1 mm (0.6 in)15 years28 of 100 (Routine)
21 August 1912Sandvig, DKmonthly rain49.4 mm (1.9 in)1.4 mm (0.06 in)23 years22 of 100 (Routine)
21 August 1912Melbourne Regional Office, AUdaily high max22.0 C (71.6 F)0.7 C (1.3 F)46 years21 of 100 (Routine)
21 August 1912Hoofddorp, NLdaily rain20.5 mm (0.8 in)4.8 mm (0.19 in)43 years20 of 100 (Routine)
21 August 1912Varberg, SEdaily rain23.7 mm (0.9 in)12.9 mm (0.5 in)2 years20 of 100 (Routine)
21 August 1912Vasteras-Hasslo, SEdaily rain26.7 mm (1.1 in)4.3 mm (0.17 in)26 years20 of 100 (Routine)
21 August 1912Bjuraker, SEdaily high min14.0 C (57.2 F)2.5 C (4.5 F)29 years19 of 100 (Routine)
21 August 1912Cape Otway Lighthouse, AUdaily high max21.1 C (70.0 F)0.5 C (0.9 F)42 years17 of 100 (Routine)
21 August 1912Halmstad, SEdaily rain53.5 mm (2.1 in)9.3 mm (0.37 in)2 years17 of 100 (Routine)
21 August 1912Orskar_A, SEdaily rain12.5 mm (0.5 in)5.1 mm (0.20 in)26 years17 of 100 (Routine)
21 August 1912Gavle, SEdaily high min15.0 C (59.0 F)2.5 C (4.5 F)22 years16 of 100 (Routine)
21 August 1912Cape Otway Lighthouse, AUdaily high min12.5 C (54.5 F)1.4 C (2.5 F)19 years15 of 100 (Routine)
21 August 1912Sydney, CAdaily low min4.4 C (39.9 F)2.3 C (4.1 F)16 years15 of 100 (Routine)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1800 to 1912
Records on 08-21 in each year Records set or tied on this calendar date in each year from 1800 to 1912. 1912 had 50 records. 05001,0001,5002,0001800: 11802: 11804: 11807: 11816: 11818: 11832: 11834: 11839: 31843: 11847: 11849: 31850: 11851: 21863: 11866: 11867: 21870: 31871: 21872: 11873: 11876: 11877: 21879: 21884: 21885: 51886: 11887: 51888: 21889: 31890: 41891: 21893: 41894: 81895: 31896: 21897: 41898: 41899: 71900: 41901: 91902: 81903: 61904: 81905: 41906: 221907: 201908: 131909: 171910: 331911: 191912: 501913: 371914: 241915: 211916: 1061917: 1011918: 2021919: 191920: 591921: 341922: 581923: 1111924: 1351925: 2201926: 2271927: 2281928: 1101929: 2341930: 2971931: 2771932: 2641933: 3281934: 3201935: 3181936: 8071937: 7621938: 2391939: 6301940: 6831941: 1801942: 4151943: 4381944: 3461945: 5441946: 3901947: 9541948: 3051949: 5081950: 9581951: 6991952: 3681953: 3311954: 4971955: 8851956: 7011957: 4901958: 3891959: 7041960: 4901961: 6441962: 4691963: 3381964: 7941965: 4551966: 6611967: 5411968: 1,0141969: 6501970: 3731971: 6601972: 4411973: 4381974: 5641975: 5451976: 7561977: 7641978: 4451979: 7781980: 9041981: 1,0151982: 7691983: 1,4071984: 9751985: 6231986: 1,1661987: 7401988: 8891989: 8281990: 9101991: 8281992: 9571993: 6981994: 9681995: 9621996: 9501997: 1,2911998: 9481999: 7172000: 8612001: 7972002: 9652003: 1,2412004: 1,5852005: 1,0712006: 7972007: 1,8292008: 1,0122009: 1,3192010: 1,1552011: 1,0222012: 9902013: 5132014: 6242015: 6512016: 8902017: 3472018: 8142019: 6252020: 1,1402021: 7602022: 9132023: 1,8142024: 7772025: 1,2321800187018951912192919461963198019972014
Records set or tied on this calendar date in each year from 1800 to 1912. 1912 had 50 records.
Counts for years before the ledger starts come from the same station rules.
Records on 08-21 in each year
YearRecords
18001
18021
18041
18071
18161
18181
18321
18341
18393
18431
18471
18493
18501
18512
18631
18661
18672
18703
18712
18721
18731
18761
18772
18792
18842
18855
18861
18875
18882
18893
18904
18912
18934
18948
18953
18962
18974
18984
18997
19004
19019
19028
19036
19048
19054
190622
190720
190813
190917
191033
191119
191250
191337
191424
191521
1916106
1917101
1918202
191919
192059
192134
192258
1923111
1924135
1925220
1926227
1927228
1928110
1929234
1930297
1931277
1932264
1933328
1934320
1935318
1936807
1937762
1938239
1939630
1940683
1941180
1942415
1943438
1944346
1945544
1946390
1947954
1948305
1949508
1950958
1951699
1952368
1953331
1954497
1955885
1956701
1957490
1958389
1959704
1960490
1961644
1962469
1963338
1964794
1965455
1966661
1967541
19681,014
1969650
1970373
1971660
1972441
1973438
1974564
1975545
1976756
1977764
1978445
1979778
1980904
19811,015
1982769
19831,407
1984975
1985623
19861,166
1987740
1988889
1989828
1990910
1991828
1992957
1993698
1994968
1995962
1996950
19971,291
1998948
1999717
2000861
2001797
2002965
20031,241
20041,585
20051,071
2006797
20071,829
20081,012
20091,319
20101,155
20111,022
2012990
2013513
2014624
2015651
2016890
2017347
2018814
2019625
20201,140
2021760
2022913
20231,814
2024777
20251,232

Download the Data

  • Data for records on 1912-08-21: CSV or JSON. Field meanings are on the data page.

Sources: 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)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).