Weather Records on 21 August 1938

239 weather records were set or tied worldwide on 21 August 1938. Highest significance: Hassan Obsy, IN.

Key Facts for 21 August 1938

On 21 August 1938, 239 weather records were set or tied at long-record stations worldwide.
51 were record highs and 45 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 10 monthly and 229 daily.
Hassan Obsy set a daily record precipitation of 66.0 mm (2.6 in) on 21 August 1938.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 451 records.

Record Map

239 stations

239 station records on 21 August 1938 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 1938: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hassan Obsy	India	Record daily precipitation	66.0 mm (2.6 in)	52 of 100 (Notable)
Little Hartley (Sheepcombe)	Australia	Record daily precipitation	38.9 mm (1.5 in)	47 of 100 (Notable)
Ferozepur Sadar	India	Record daily precipitation	104.1 mm (4.1 in)	46 of 100 (Notable)
Manapparai	India	Record daily precipitation	77.2 mm (3.0 in)	46 of 100 (Notable)
Penukonda	India	Record daily precipitation	94.0 mm (3.7 in)	45 of 100 (Notable)
Thathaiengarpet	India	Record daily precipitation	87.6 mm (3.4 in)	44 of 100 (Notable)
Pavagada	India	Record daily precipitation	88.9 mm (3.5 in)	43 of 100 (Notable)
Cherdyn'	Russia	Record daily precipitation	29.9 mm (1.2 in)	42 of 100 (Notable)
Sankari	India	Record daily precipitation	77.0 mm (3.0 in)	40 of 100 (Notable)
Galway	Ireland	Record low maximum temperature	7.8 C (46.0 F)	37 of 100 (Notable)
Socorro	United States	Record low minimum temperature	2.8 C (37.0 F)	37 of 100 (Notable)
Rasra	India	Record daily precipitation	119.9 mm (4.7 in)	36 of 100 (Notable)
Cheyyar	India	Record daily precipitation	134.9 mm (5.3 in)	35 of 100 (Notable)
Valapady	India	Record daily precipitation	80.5 mm (3.2 in)	30 of 100 (Routine)
Dharmavaram	India	Record daily precipitation	106.7 mm (4.2 in)	29 of 100 (Routine)
Holenarsipur	India	Record daily precipitation	26.7 mm (1.1 in)	29 of 100 (Routine)
Vaniyambadi	India	Record daily precipitation	49.0 mm (1.9 in)	28 of 100 (Routine)
Stuttgart-Stadt	Germany	Record daily precipitation	28.5 mm (1.1 in)	27 of 100 (Routine)
Musiri	India	Record daily precipitation	43.7 mm (1.7 in)	27 of 100 (Routine)
Handia	India	Record daily precipitation	77.5 mm (3.1 in)	27 of 100 (Routine)
Iguape	Brazil	Record daily precipitation	34.5 mm (1.4 in)	25 of 100 (Routine)
Danville	United States	Record daily precipitation	48.3 mm (1.9 in)	25 of 100 (Routine)
Nurnberg	Germany	Record daily precipitation	33.0 mm (1.3 in)	24 of 100 (Routine)
Tuttlingen	Germany	Record daily precipitation	29.1 mm (1.1 in)	24 of 100 (Routine)
Liepaja	Latvia	Record daily precipitation	28.0 mm (1.1 in)	24 of 100 (Routine)
Lexington 3E	United States	Record daily precipitation	74.7 mm (2.9 in)	24 of 100 (Routine)
Channarayapatna	India	Record daily precipitation	50.3 mm (2.0 in)	23 of 100 (Routine)
Buxa	India	Record daily precipitation	116.6 mm (4.6 in)	23 of 100 (Routine)
Fayette	United States	Record daily precipitation	37.1 mm (1.5 in)	23 of 100 (Routine)
La Sal	United States	Record high maximum temperature	37.8 C (100.0 F)	23 of 100 (Routine)
Hannibal	United States	Record daily precipitation	30.5 mm (1.2 in)	23 of 100 (Routine)
Madras/Minambakkam	India	Record daily precipitation	57.7 mm (2.3 in)	22 of 100 (Routine)
Sioux Ctr 2 SE	United States	Record high maximum temperature	35.0 C (95.0 F)	22 of 100 (Routine)
Leavenworth	United States	Record daily precipitation	71.1 mm (2.8 in)	22 of 100 (Routine)
Hillsdown	Canada	Record low maximum temperature	10.6 C (51.1 F)	21 of 100 (Routine)
Kamalpur	India	Record daily precipitation	94.0 mm (3.7 in)	21 of 100 (Routine)
Robertsganj	India	Record daily precipitation	96.3 mm (3.8 in)	21 of 100 (Routine)
Darjeeling	India	Record daily precipitation	68.8 mm (2.7 in)	21 of 100 (Routine)
Manassa	United States	Record low minimum temperature	0.6 C (33.1 F)	21 of 100 (Routine)
Rockville	United States	Record daily precipitation	90.9 mm (3.6 in)	21 of 100 (Routine)
Chama	United States	Record low minimum temperature	1.7 C (35.1 F)	21 of 100 (Routine)
Weissenburg	Germany	Record daily precipitation	18.2 mm (0.7 in)	20 of 100 (Routine)
Pointe Au Pere	Canada	Record daily precipitation	16.8 mm (0.7 in)	20 of 100 (Routine)
Bamberg	Germany	Record daily precipitation	18.6 mm (0.7 in)	20 of 100 (Routine)
Berlin-Dahlem	Germany	Record daily precipitation	8.1 mm (0.32 in)	20 of 100 (Routine)
Cap Chat	Canada	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Madakasira	India	Record daily precipitation	81.3 mm (3.2 in)	20 of 100 (Routine)
Jayamkondam	India	Record daily precipitation	72.1 mm (2.8 in)	20 of 100 (Routine)
Kislovodsk	Russia	Record daily precipitation	26.7 mm (1.1 in)	20 of 100 (Routine)
Waverly	United States	Record daily precipitation	31.0 mm (1.2 in)	20 of 100 (Routine)
Southern Cross	Australia	Record high minimum temperature	14.4 C (57.9 F)	19 of 100 (Routine)
Alix	Canada	Record daily precipitation	15.2 mm (0.6 in)	19 of 100 (Routine)
Pattikonda	India	Record daily precipitation	47.0 mm (1.9 in)	19 of 100 (Routine)
Banka	India	Record daily precipitation	53.3 mm (2.1 in)	19 of 100 (Routine)
Gudibanda	India	Record daily precipitation	59.9 mm (2.4 in)	19 of 100 (Routine)
Covelong	India	Record daily precipitation	38.1 mm (1.5 in)	19 of 100 (Routine)
Gunnison 3SW	United States	Record low minimum temperature	-1.1 C (30.0 F)	19 of 100 (Routine)
Crystal Springs Exp STN	United States	Record high minimum temperature	25.0 C (77.0 F)	19 of 100 (Routine)
Warrensburg 4NW	United States	Record daily precipitation	38.9 mm (1.5 in)	19 of 100 (Routine)
Taos	United States	Record high maximum temperature	35.6 C (96.1 F)	19 of 100 (Routine)

Counts by Type and Timescale

239 records

Records set or tied on 21 August 1938 by type: Highest daily maximum 22, Lowest daily maximum 16, Highest daily minimum 29, Lowest daily minimum 29, Heaviest daily rainfall 143.

Records on 21 August 1938 by type
Record type	Records
Highest daily maximum	22
Lowest daily maximum	16
Highest daily minimum	29
Lowest daily minimum	29
Heaviest daily rainfall	143
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 1938 by timescale: all-time 0, monthly 10, daily 229.

How Much Records Were Beaten By

193 broken records

Margins by which the 193 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 83.5. Ties are not counted.

Top 20 by Significance

21 August 1938

Top 20 records on 21 August 1938 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1938	Hassan Obsy, IN	daily rain	66.0 mm (2.6 in)	38.3 mm (1.5 in)	32 years	52 of 100 (Notable)
21 August 1938	Little Hartley (Sheepcombe), AU	daily rain	38.9 mm (1.5 in)	30.8 mm (1.2 in)	27 years	47 of 100 (Notable)
21 August 1938	Ferozepur Sadar, IN	daily rain	104.1 mm (4.1 in)	83.5 mm (3.3 in)	16 years	46 of 100 (Notable)
21 August 1938	Manapparai, IN	daily rain	77.2 mm (3.0 in)	68.3 mm (2.7 in)	21 years	46 of 100 (Notable)
21 August 1938	Penukonda, IN	daily rain	94.0 mm (3.7 in)	49.0 mm (1.9 in)	28 years	45 of 100 (Notable)
21 August 1938	Thathaiengarpet, IN	daily rain	87.6 mm (3.4 in)	71.9 mm (2.8 in)	21 years	44 of 100 (Notable)
21 August 1938	Pavagada, IN	daily rain	88.9 mm (3.5 in)	50.0 mm (2.0 in)	32 years	43 of 100 (Notable)
21 August 1938	Cherdyn', RU	daily rain	29.9 mm (1.2 in)	12.9 mm (0.5 in)	47 years	42 of 100 (Notable)
21 August 1938	Sankari, IN	daily rain	77.0 mm (3.0 in)	47.5 mm (1.9 in)	21 years	40 of 100 (Notable)
21 August 1938	Galway, IE	monthly low max	7.8 C (46.0 F)	5.0 C (9.0 F)	4 years	37 of 100 (Notable)
21 August 1938	Socorro, US	monthly low min	2.8 C (37.0 F)	4.4 C (7.9 F)	22 years	37 of 100 (Notable)
21 August 1938	Rasra, IN	daily rain	119.9 mm (4.7 in)	61.0 mm (2.4 in)	27 years	36 of 100 (Notable)
21 August 1938	Cheyyar, IN	monthly rain	134.9 mm (5.3 in)	21.9 mm (0.9 in)	29 years	35 of 100 (Notable)
21 August 1938	Valapady, IN	daily rain	80.5 mm (3.2 in)	35.3 mm (1.4 in)	13 years	30 of 100 (Routine)
21 August 1938	Dharmavaram, IN	monthly rain	106.7 mm (4.2 in)	11.2 mm (0.4 in)	32 years	29 of 100 (Routine)
21 August 1938	Holenarsipur, IN	daily rain	26.7 mm (1.1 in)	18.6 mm (0.7 in)	32 years	29 of 100 (Routine)
21 August 1938	Vaniyambadi, IN	daily rain	49.0 mm (1.9 in)	30.2 mm (1.2 in)	28 years	28 of 100 (Routine)
21 August 1938	Stuttgart-Stadt, DE	daily rain	28.5 mm (1.1 in)	11.3 mm (0.4 in)	20 years	27 of 100 (Routine)
21 August 1938	Musiri, IN	daily rain	43.7 mm (1.7 in)	30.2 mm (1.2 in)	20 years	27 of 100 (Routine)
21 August 1938	Handia, IN	daily rain	77.5 mm (3.1 in)	29.2 mm (1.1 in)	33 years	27 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 1938

Records set or tied on this calendar date in each year from 1800 to 1938. 1938 had 239 records.

Counts for years before the ledger starts come from the same station rules.

Records on 08-21 in each year
Year	Records
1800	1
1802	1
1804	1
1807	1
1816	1
1818	1
1832	1
1834	1
1839	3
1843	1
1847	1
1849	3
1850	1
1851	2
1863	1
1866	1
1867	2
1870	3
1871	2
1872	1
1873	1
1876	1
1877	2
1879	2
1884	2
1885	5
1886	1
1887	5
1888	2
1889	3
1890	4
1891	2
1893	4
1894	8
1895	3
1896	2
1897	4
1898	4
1899	7
1900	4
1901	9
1902	8
1903	6
1904	8
1905	4
1906	22
1907	20
1908	13
1909	17
1910	33
1911	19
1912	50
1913	37
1914	24
1915	21
1916	106
1917	101
1918	202
1919	19
1920	59
1921	34
1922	58
1923	111
1924	135
1925	220
1926	227
1927	228
1928	110
1929	234
1930	297
1931	277
1932	264
1933	328
1934	320
1935	318
1936	807
1937	762
1938	239
1939	630
1940	683
1941	180
1942	415
1943	438
1944	346
1945	544
1946	390
1947	954
1948	305
1949	508
1950	958
1951	699
1952	368
1953	331
1954	497
1955	885
1956	701
1957	490
1958	389
1959	704
1960	490
1961	644
1962	469
1963	338
1964	794
1965	455
1966	661
1967	541
1968	1,014
1969	650
1970	373
1971	660
1972	441
1973	438
1974	564
1975	545
1976	756
1977	764
1978	445
1979	778
1980	904
1981	1,015
1982	769
1983	1,407
1984	975
1985	623
1986	1,166
1987	740
1988	889
1989	828
1990	910
1991	828
1992	957
1993	698
1994	968
1995	962
1996	950
1997	1,291
1998	948
1999	717
2000	861
2001	797
2002	965
2003	1,241
2004	1,585
2005	1,071
2006	797
2007	1,829
2008	1,012
2009	1,319
2010	1,155
2011	1,022
2012	990
2013	513
2014	624
2015	651
2016	890
2017	347
2018	816
2019	631
2020	1,147
2021	768
2022	917
2023	1,826
2024	777
2025	1,230
2026	1,291

Download the Data

Data for records on 1938-08-21: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	167
20 to 40	17
40 to 60	5
60 to 80	3
80 to 100	1