Weather Records on 4 August 1939

433 weather records were set or tied worldwide on 4 August 1939. Highest significance: Bukalong Station, AU.

Key Facts for 4 August 1939

On 4 August 1939, 433 weather records were set or tied at long-record stations worldwide.
127 were record highs and 46 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 12 monthly and 419 daily.
Bukalong Station set a daily record precipitation of 59.7 mm (2.4 in) on 4 August 1939.
Across 165 earlier years (1815 to 2026) the same calendar date averaged 441 records.

Record Map

433 stations

433 station records on 4 August 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 August 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bukalong Station	Australia	Record daily precipitation	59.7 mm (2.4 in)	60 of 100 (Major)
Dinby	Australia	Record daily precipitation	53.3 mm (2.1 in)	54 of 100 (Notable)
Le Bourget	France	Record daily precipitation	37.8 mm (1.5 in)	54 of 100 (Notable)
Burragate Post Office	Australia	Record daily precipitation	97.0 mm (3.8 in)	50 of 100 (Notable)
Delegate (Weewalla)	Australia	Record daily precipitation	63.0 mm (2.5 in)	50 of 100 (Notable)
Vishnupur	India	Record daily precipitation	157.2 mm (6.2 in)	50 of 100 (Notable)
Raghunathpur	India	Record daily precipitation	158.0 mm (6.2 in)	50 of 100 (Notable)
Manfred	Australia	Record daily precipitation	25.4 mm (1.0 in)	49 of 100 (Notable)
Coolatai (Willunga)	Australia	Record daily precipitation	47.8 mm (1.9 in)	49 of 100 (Notable)
Hooghly	India	Record daily precipitation	103.9 mm (4.1 in)	48 of 100 (Notable)
Durdidwarrah	Australia	Record daily precipitation	27.4 mm (1.1 in)	47 of 100 (Notable)
Crohamhurst	Australia	Record daily precipitation	56.1 mm (2.2 in)	46 of 100 (Notable)
Delegate Post Office	Australia	Record daily precipitation	58.2 mm (2.3 in)	46 of 100 (Notable)
Gangajalghati	India	Record daily precipitation	114.3 mm (4.5 in)	46 of 100 (Notable)
Bega (Newtown Road)	Australia	Record daily precipitation	131.8 mm (5.2 in)	45 of 100 (Notable)
Tombong (Hillcrest)	Australia	Record daily precipitation	45.7 mm (1.8 in)	45 of 100 (Notable)
Mount Seymour (Overton)	Australia	Record daily precipitation	31.5 mm (1.2 in)	45 of 100 (Notable)
Mahuadaur	India	Record daily precipitation	149.9 mm (5.9 in)	45 of 100 (Notable)
Covington 8 WNW	United States	Record daily precipitation	83.1 mm (3.3 in)	45 of 100 (Notable)
Freshwater	Australia	Record daily precipitation	30.5 mm (1.2 in)	44 of 100 (Notable)
Copmanhurst Post Office	Australia	Record daily precipitation	39.6 mm (1.6 in)	44 of 100 (Notable)
Beenak	Australia	Record daily precipitation	52.1 mm (2.1 in)	44 of 100 (Notable)
Arambagh	India	Record daily precipitation	134.6 mm (5.3 in)	44 of 100 (Notable)
Chas	India	Record daily precipitation	129.5 mm (5.1 in)	43 of 100 (Notable)
Sonamukhi	India	Record daily precipitation	135.9 mm (5.4 in)	43 of 100 (Notable)
Howrah	India	Record daily precipitation	112.3 mm (4.4 in)	43 of 100 (Notable)
Urawilkie	Australia	Record daily precipitation	27.2 mm (1.1 in)	42 of 100 (Notable)
Jimenbuen	Australia	Record daily precipitation	33.8 mm (1.3 in)	41 of 100 (Notable)
Saraikela	India	Record daily precipitation	167.9 mm (6.6 in)	41 of 100 (Notable)
Bongaon	India	Record daily precipitation	99.8 mm (3.9 in)	41 of 100 (Notable)
Biloxi	United States	Record daily precipitation	94.0 mm (3.7 in)	41 of 100 (Notable)
Gembrook	Australia	Record daily precipitation	33.5 mm (1.3 in)	39 of 100 (Notable)
Amlagora	India	Record daily precipitation	107.4 mm (4.2 in)	39 of 100 (Notable)
Kameruka (Kameruka Estate)	Australia	Record daily precipitation	116.8 mm (4.6 in)	38 of 100 (Notable)
Calcutta/Alipore	India	Record daily precipitation	116.8 mm (4.6 in)	38 of 100 (Notable)
Kristianstad	Sweden	Record daily precipitation	39.0 mm (1.5 in)	38 of 100 (Notable)
Carlton Brg	United States	Record daily precipitation	65.5 mm (2.6 in)	38 of 100 (Notable)
Grand Coteau	United States	Record daily precipitation	92.7 mm (3.6 in)	37 of 100 (Notable)
Koloa 936	United States	Record high minimum temperature	25.6 C (78.1 F)	37 of 100 (Notable)
Candelo Post Office	Australia	Record daily precipitation	129.5 mm (5.1 in)	36 of 100 (Notable)
Dalgety (Hamilton St)	Australia	Record daily precipitation	25.4 mm (1.0 in)	36 of 100 (Notable)
Jindabyne Public School	Australia	Record daily precipitation	40.1 mm (1.6 in)	36 of 100 (Notable)
Beaconsfield Upper	Australia	Record daily precipitation	26.9 mm (1.1 in)	36 of 100 (Notable)
Ohringen	Germany	Record daily precipitation	32.7 mm (1.3 in)	36 of 100 (Notable)
Purulia	India	Record daily precipitation	202.7 mm (8.0 in)	36 of 100 (Notable)
Tamar	India	Record daily precipitation	115.8 mm (4.6 in)	34 of 100 (Routine)
Calcutta/Barracks	India	Record daily precipitation	110.5 mm (4.4 in)	34 of 100 (Routine)
Brome	Canada	Record daily precipitation	48.3 mm (1.9 in)	33 of 100 (Routine)
Rockingham Post Office	Australia	Record daily precipitation	31.8 mm (1.3 in)	32 of 100 (Routine)
Menangle Jmai	Australia	Record daily precipitation	38.1 mm (1.5 in)	32 of 100 (Routine)
Bemboka Post Office	Australia	Record daily precipitation	104.6 mm (4.1 in)	32 of 100 (Routine)
Sandvig	Denmark	Record daily precipitation	69.8 mm (2.7 in)	32 of 100 (Routine)
Wyndham Post Office	Australia	Record daily precipitation	140.7 mm (5.5 in)	31 of 100 (Routine)
Artesia 6S	United States	Record daily precipitation	38.1 mm (1.5 in)	31 of 100 (Routine)
Ashland	United States	Record daily precipitation	30.5 mm (1.2 in)	31 of 100 (Routine)
Sitka Magnetic Obsy	United States	Record daily precipitation	54.9 mm (2.2 in)	31 of 100 (Routine)
Las Vegas 2 NW	United States	Record high minimum temperature	18.9 C (66.0 F)	30 of 100 (Routine)
Cathcart (Old Post Office)	Australia	Record daily precipitation	81.3 mm (3.2 in)	29 of 100 (Routine)
Edmonton	Canada	Record high maximum temperature	33.3 C (91.9 F)	29 of 100 (Routine)
Khatra	India	Record daily precipitation	139.7 mm (5.5 in)	29 of 100 (Routine)

Counts by Type and Timescale

433 records

Records set or tied on 4 August 1939 by type: Highest daily maximum 75, Lowest daily maximum 31, Highest daily minimum 52, Lowest daily minimum 15, Heaviest daily rainfall 260.

Records on 4 August 1939 by type
Record type	Records
Highest daily maximum	75
Lowest daily maximum	31
Highest daily minimum	52
Lowest daily minimum	15
Heaviest daily rainfall	260
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 4 August 1939 by timescale: all-time 2, monthly 12, daily 419.

How Much Records Were Beaten By

383 broken records

Margins by which the 383 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 125.2. Ties are not counted.

Top 20 by Significance

4 August 1939

Top 20 records on 4 August 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 August 1939	Bukalong Station, AU	daily rain	59.7 mm (2.4 in)	38.9 mm (1.5 in)	47 years	60 of 100 (Major)
4 August 1939	Dinby, AU	daily rain	53.3 mm (2.1 in)	45.4 mm (1.8 in)	32 years	54 of 100 (Notable)
4 August 1939	Le Bourget, FR	daily rain	37.8 mm (1.5 in)	25.6 mm (1.0 in)	34 years	54 of 100 (Notable)
4 August 1939	Burragate Post Office, AU	daily rain	97.0 mm (3.8 in)	82.8 mm (3.3 in)	21 years	50 of 100 (Notable)
4 August 1939	Delegate (Weewalla), AU	monthly rain	63.0 mm (2.5 in)	14.7 mm (0.6 in)	4 years	50 of 100 (Notable)
4 August 1939	Vishnupur, IN	daily rain	157.2 mm (6.2 in)	125.2 mm (4.9 in)	24 years	50 of 100 (Notable)
4 August 1939	Raghunathpur, IN	daily rain	158.0 mm (6.2 in)	105.7 mm (4.2 in)	24 years	50 of 100 (Notable)
4 August 1939	Manfred, AU	daily rain	25.4 mm (1.0 in)	18.8 mm (0.7 in)	40 years	49 of 100 (Notable)
4 August 1939	Coolatai (Willunga), AU	daily rain	47.8 mm (1.9 in)	44.2 mm (1.7 in)	22 years	49 of 100 (Notable)
4 August 1939	Hooghly, IN	daily rain	103.9 mm (4.1 in)	74.7 mm (2.9 in)	28 years	48 of 100 (Notable)
4 August 1939	Durdidwarrah, AU	daily rain	27.4 mm (1.1 in)	13.4 mm (0.5 in)	32 years	47 of 100 (Notable)
4 August 1939	Crohamhurst, AU	daily rain	56.1 mm (2.2 in)	47.2 mm (1.9 in)	8 years	46 of 100 (Notable)
4 August 1939	Delegate Post Office, AU	daily rain	58.2 mm (2.3 in)	34.1 mm (1.3 in)	8 years	46 of 100 (Notable)
4 August 1939	Gangajalghati, IN	daily rain	114.3 mm (4.5 in)	62.0 mm (2.4 in)	24 years	46 of 100 (Notable)
4 August 1939	Bega (Newtown Road), AU	daily rain	131.8 mm (5.2 in)	60.7 mm (2.4 in)	16 years	45 of 100 (Notable)
4 August 1939	Tombong (Hillcrest), AU	daily rain	45.7 mm (1.8 in)	34.3 mm (1.4 in)	8 years	45 of 100 (Notable)
4 August 1939	Mount Seymour (Overton), AU	daily rain	31.5 mm (1.2 in)	14.5 mm (0.6 in)	17 years	45 of 100 (Notable)
4 August 1939	Mahuadaur, IN	daily rain	149.9 mm (5.9 in)	108.2 mm (4.3 in)	6 years	45 of 100 (Notable)
4 August 1939	Covington 8 WNW, US	daily rain	83.1 mm (3.3 in)	47.5 mm (1.9 in)	34 years	45 of 100 (Notable)
4 August 1939	Freshwater, AU	daily rain	30.5 mm (1.2 in)	23.4 mm (0.9 in)	12 years	44 of 100 (Notable)

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

1815 to 1939

Records set or tied on this calendar date in each year from 1815 to 1939. 1939 had 433 records.

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

Records on 08-04 in each year
Year	Records
1815	1
1827	1
1830	2
1833	1
1835	1
1843	1
1846	1
1847	1
1848	1
1857	1
1859	2
1860	2
1863	1
1865	3
1867	1
1868	1
1870	1
1871	1
1872	2
1874	3
1875	1
1878	3
1879	1
1881	2
1882	1
1883	1
1885	3
1886	1
1887	3
1888	4
1889	2
1890	1
1891	2
1893	2
1894	1
1895	3
1896	4
1897	3
1898	1
1899	7
1900	6
1902	4
1903	18
1904	11
1905	19
1906	14
1907	20
1908	31
1909	27
1910	17
1911	23
1912	51
1913	15
1914	33
1915	85
1916	97
1917	29
1918	95
1919	34
1920	79
1921	67
1922	68
1923	146
1924	132
1925	77
1926	334
1927	136
1928	352
1929	224
1930	698
1931	371
1932	258
1933	347
1934	521
1935	367
1936	719
1937	258
1938	489
1939	433
1940	236
1941	383
1942	303
1943	468
1944	662
1945	355
1946	265
1947	845
1948	558
1949	421
1950	666
1951	680
1952	465
1953	1,017
1954	426
1955	624
1956	437
1957	343
1958	533
1959	303
1960	331
1961	745
1962	470
1963	438
1964	885
1965	409
1966	552
1967	428
1968	280
1969	638
1970	415
1971	813
1972	773
1973	748
1974	1,040
1975	772
1976	801
1977	599
1978	1,051
1979	510
1980	998
1981	636
1982	703
1983	920
1984	722
1985	634
1986	905
1987	892
1988	1,204
1989	738
1990	1,013
1991	769
1992	754
1993	1,046
1994	1,265
1995	1,117
1996	1,143
1997	891
1998	1,423
1999	762
2000	840
2001	1,087
2002	928
2003	1,309
2004	968
2005	1,246
2006	1,131
2007	685
2008	883
2009	681
2010	1,665
2011	1,536
2012	738
2013	452
2014	980
2015	505
2016	732
2017	1,134
2018	760
2019	499
2020	778
2021	691
2022	1,185
2023	1,150
2024	809
2025	840
2026	1,044

Download the Data

Data for records on 1939-08-04: 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 2026-10-17 (17 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	326
20 to 40	30
40 to 60	12
60 to 80	9
80 to 100	2
100 to 120	3
120 to 140	1