Record envelope, standing records and threshold days for Johannesburg Intl (SFM00068368), South Africa, with 48 years of record.
Key Facts for Johannesburg Intl
Johannesburg Intl (SFM00068368) is a weather station in South Africa at -26.14 latitude and 28.25 longitude, 1,694 m (5,558 ft) above sea level.
The station reports from 1973 to 2020, 48 years of record.
1,464 records set at Johannesburg Intl still stand.
Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
Johannesburg Intl set a daily record low maximum temperature of 12.0 C (53.6 F) on 27 May 2020.
About the Station
Location: South Africa, -26.14 latitude, 28.25 longitude.
Elevation: 1,694 m (5,558 ft).
Period of record: 1973 to 2020, 48 years.
Eligible elements: tmax, tmin.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Johannesburg Intl. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Johannesburg Intl, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
37.0 C (98.6 F)
6.0 C (42.8 F)
n/a
n/a
Feb
33.5 C (92.3 F)
6.0 C (42.8 F)
n/a
n/a
Mar
35.0 C (95.0 F)
2.0 C (35.6 F)
n/a
n/a
Apr
29.3 C (84.7 F)
-1.0 C (30.2 F)
n/a
n/a
May
29.0 C (84.2 F)
-5.3 C (22.5 F)
n/a
n/a
Jun
28.7 C (83.7 F)
-7.0 C (19.4 F)
n/a
n/a
Jul
24.4 C (75.9 F)
-6.3 C (20.7 F)
n/a
n/a
Aug
28.0 C (82.4 F)
-7.0 C (19.4 F)
n/a
n/a
Sep
33.1 C (91.6 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
34.1 C (93.4 F)
0.5 C (32.9 F)
n/a
n/a
Nov
33.6 C (92.5 F)
0.0 C (32.0 F)
n/a
n/a
Dec
34.1 C (93.4 F)
2.7 C (36.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Johannesburg Intl still stand. 2015 holds the most, with 83.
Standing records at Johannesburg Intl by the year they were set
Year set
Standing records
1975
3
1976
15
1977
1
1979
2
1980
15
1981
16
1982
29
1983
51
1984
45
1985
32
1986
19
1987
41
1988
42
1989
32
1990
33
1991
31
1992
62
1993
30
1994
39
1995
30
1996
28
1997
42
1998
56
1999
18
2000
39
2001
28
2002
33
2003
30
2004
22
2005
19
2006
39
2007
53
2008
28
2009
35
2010
25
2011
30
2012
34
2013
46
2014
49
2015
83
2016
56
2017
47
2018
45
2020
11
All-Time Record Progression
2 new records
2 all-time records were set at Johannesburg Intl between 1 November 2015 and 7 January 2016. Each dot is a new record.
When Johannesburg Intl set new all-time records
Date
Kind
Detail
2015-11-01
Record high minimum temperature
Record high minimum temperature 21.5 C (70.7 F)
2016-01-07
Record high minimum temperature
Record high minimum temperature 22.2 C (72.0 F)
Wettest Day of Each Month
Dec: 169.9 mm (6.7 in)
The wettest day on record for each calendar month at Johannesburg Intl. The most was 169.9 mm (6.7 in) on 3 December 2015.
Record daily precipitation for each month at Johannesburg Intl
Month
Record daily precipitation (mm)
Date
Jan
160.0 mm (6.3 in)
9 January 2016
Feb
65.0 mm (2.6 in)
12 February 1996
Mar
73.4 mm (2.9 in)
5 March 1997
Apr
64.0 mm (2.5 in)
27 April 2020
May
48.0 mm (1.9 in)
15 May 2016
Jun
43.2 mm (1.7 in)
1 June 2002
Jul
19.1 mm (0.8 in)
20 July 2007
Aug
48.0 mm (1.9 in)
10 August 2013
Sep
101.3 mm (4.0 in)
13 September 2001
Oct
110.2 mm (4.3 in)
31 October 1985
Nov
89.9 mm (3.5 in)
10 November 2016
Dec
169.9 mm (6.7 in)
3 December 2015
Period of Record Coverage
1974 to 2020
Complete yearUnder 90 percent of days
43 years of record at Johannesburg Intl, 1974 to 2020. 23 years have data for under 90 percent of days and are left out of rankings: 1974, 1975, 1976, 1977, 1981, 1988, 1989, 2002 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 11 complete years at Johannesburg Intl, 1983 to 2015. Blue stripes are years cooler than the station's own mean of 16.9 C (62.4 F); red stripes are warmer. The coolest year was 1994, at 15.7 C (60.2 F), and the warmest was 2015, at 17.9 C (64.2 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at Johannesburg Intl as warming stripes, 1983 to 2015
Year
Annual mean temperature
Difference from the station mean
1983
17.7 C
+0.79 C
1984
17.3 C
+0.35 C
1985
17.4 C
+0.50 C
1986
17.1 C
+0.22 C
1991
16.2 C
-0.70 C
1992
17.1 C
+0.19 C
1993
16.6 C
-0.27 C
1994
15.7 C
-1.25 C
1995
16.3 C
-0.66 C
2014
16.8 C
-0.12 C
2015
17.9 C
+0.99 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1973 to 2020
Yearly extremes at Johannesburg Intl: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.0 C (98.6 F)
1975
32.0 C (89.6 F)
43
Coldest night (TNn)
-7.0 C (19.4 F)
1992
-2.6 C (27.3 F)
43
Wettest day (Rx1day)
169.9 mm (6.7 in)
2015
46.2 mm (1.8 in)
47
Wettest five days (Rx5day)
261.3 mm (10.3 in)
2016
84.3 mm (3.3 in)
45
Longest dry spell (CDD)
66 days
1978
10 days
47
Hottest day (TXx)
The hottest day of the year at Johannesburg Intl, 1973 to 2020. The record is 37.0 C (98.6 F) in 1975, marked on the chart; the median year is 32.0 C (89.6 F).
Hottest day (TXx) at Johannesburg Intl by year
Year
Hottest day (TXx)
1973
n/a
1974
27.0 C (80.6 F)
1975
37.0 C (98.6 F)
1976
29.0 C (84.2 F)
1977
31.0 C (87.8 F)
1978
n/a
1979
n/a
1980
n/a
1981
32.0 C (89.6 F)
1982
32.2 C (90.0 F)
1983
35.0 C (95.0 F)
1984
32.6 C (90.7 F)
1985
32.2 C (90.0 F)
1986
30.5 C (86.9 F)
1987
31.2 C (88.2 F)
1988
31.9 C (89.4 F)
1989
30.4 C (86.7 F)
1990
32.9 C (91.2 F)
1991
31.2 C (88.2 F)
1992
32.0 C (89.6 F)
1993
33.7 C (92.7 F)
1994
32.6 C (90.7 F)
1995
31.9 C (89.4 F)
1996
31.1 C (88.0 F)
1997
33.1 C (91.6 F)
1998
30.1 C (86.2 F)
1999
32.0 C (89.6 F)
2000
29.1 C (84.4 F)
2001
32.8 C (91.0 F)
2002
31.3 C (88.3 F)
2003
32.0 C (89.6 F)
2004
31.5 C (88.7 F)
2005
33.6 C (92.5 F)
2006
32.5 C (90.5 F)
2007
32.3 C (90.1 F)
2008
31.9 C (89.4 F)
2009
30.6 C (87.1 F)
2010
31.3 C (88.3 F)
2011
34.1 C (93.4 F)
2012
30.4 C (86.7 F)
2013
32.4 C (90.3 F)
2014
31.0 C (87.8 F)
2015
33.6 C (92.5 F)
2016
35.9 C (96.6 F)
2017
30.6 C (87.1 F)
2018
34.1 C (93.4 F)
2020
29.5 C (85.1 F)
Coldest night (TNn)
The coldest night of the year at Johannesburg Intl, 1973 to 2020. The record is -7.0 C (19.4 F) in 1992, marked on the chart; the median year is -2.6 C (27.3 F).
Coldest night (TNn) at Johannesburg Intl by year
Year
Coldest night (TNn)
1973
1.0 C (33.8 F)
1974
n/a
1975
11.0 C (51.8 F)
1976
n/a
1977
n/a
1978
n/a
1979
9.0 C (48.2 F)
1980
-2.0 C (28.4 F)
1981
-3.0 C (26.6 F)
1982
0.5 C (32.9 F)
1983
-1.9 C (28.6 F)
1984
-0.4 C (31.3 F)
1985
-2.6 C (27.3 F)
1986
1.0 C (33.8 F)
1987
-2.1 C (28.2 F)
1988
-1.4 C (29.5 F)
1989
-4.5 C (23.9 F)
1990
-5.1 C (22.8 F)
1991
-4.3 C (24.3 F)
1992
-7.0 C (19.4 F)
1993
-4.1 C (24.6 F)
1994
-5.5 C (22.1 F)
1995
-6.3 C (20.7 F)
1996
-3.7 C (25.3 F)
1997
-3.1 C (26.4 F)
1998
-5.2 C (22.6 F)
1999
-2.4 C (27.7 F)
2000
-5.5 C (22.1 F)
2001
-4.2 C (24.4 F)
2002
-4.7 C (23.5 F)
2003
-7.0 C (19.4 F)
2004
-3.3 C (26.1 F)
2005
-1.4 C (29.5 F)
2006
-2.3 C (27.9 F)
2007
-3.5 C (25.7 F)
2008
-1.5 C (29.3 F)
2009
-3.5 C (25.7 F)
2010
-6.4 C (20.5 F)
2011
-3.0 C (26.6 F)
2012
-2.2 C (28.0 F)
2013
-1.9 C (28.6 F)
2014
-3.6 C (25.5 F)
2015
-1.8 C (28.8 F)
2016
-1.0 C (30.2 F)
2017
-1.9 C (28.6 F)
2018
-2.5 C (27.5 F)
2020
0.1 C (32.2 F)
Wettest day (Rx1day)
The wettest day of the year at Johannesburg Intl, 1973 to 2020. The record is 169.9 mm (6.7 in) in 2015, marked on the chart; the median year is 46.2 mm (1.8 in).
Wettest day (Rx1day) at Johannesburg Intl by year
Year
Wettest day (Rx1day)
1973
19.1 mm (0.8 in)
1974
39.1 mm (1.5 in)
1975
0.0 mm (0.00 in)
1976
80.0 mm (3.1 in)
1977
52.1 mm (2.1 in)
1978
49.0 mm (1.9 in)
1979
41.9 mm (1.6 in)
1980
59.9 mm (2.4 in)
1981
39.1 mm (1.5 in)
1982
38.4 mm (1.5 in)
1983
30.2 mm (1.2 in)
1984
40.4 mm (1.6 in)
1985
110.2 mm (4.3 in)
1986
66.5 mm (2.6 in)
1987
61.7 mm (2.4 in)
1988
49.3 mm (1.9 in)
1989
51.6 mm (2.0 in)
1990
56.1 mm (2.2 in)
1991
41.7 mm (1.6 in)
1992
43.4 mm (1.7 in)
1993
48.5 mm (1.9 in)
1994
44.7 mm (1.8 in)
1995
74.7 mm (2.9 in)
1996
65.0 mm (2.6 in)
1997
73.4 mm (2.9 in)
1998
46.0 mm (1.8 in)
1999
37.3 mm (1.5 in)
2000
59.7 mm (2.4 in)
2001
101.3 mm (4.0 in)
2002
43.2 mm (1.7 in)
2003
55.9 mm (2.2 in)
2004
57.4 mm (2.3 in)
2005
46.2 mm (1.8 in)
2006
29.7 mm (1.2 in)
2007
32.0 mm (1.3 in)
2008
40.1 mm (1.6 in)
2009
43.7 mm (1.7 in)
2010
57.4 mm (2.3 in)
2011
39.6 mm (1.6 in)
2012
32.0 mm (1.3 in)
2013
48.0 mm (1.9 in)
2014
39.1 mm (1.5 in)
2015
169.9 mm (6.7 in)
2016
160.0 mm (6.3 in)
2017
40.9 mm (1.6 in)
2018
32.0 mm (1.3 in)
2020
64.0 mm (2.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Johannesburg Intl, 1973 to 2020. The record is 261.3 mm (10.3 in) in 2016, marked on the chart; the median year is 84.3 mm (3.3 in).
Wettest five days (Rx5day) at Johannesburg Intl by year
Year
Wettest five days (Rx5day)
1973
n/a
1974
1.0 mm (0.04 in)
1975
n/a
1976
133.3 mm (5.2 in)
1977
74.2 mm (2.9 in)
1978
115.3 mm (4.5 in)
1979
104.1 mm (4.1 in)
1980
92.9 mm (3.7 in)
1981
113.0 mm (4.4 in)
1982
82.0 mm (3.2 in)
1983
73.4 mm (2.9 in)
1984
56.2 mm (2.2 in)
1985
209.8 mm (8.3 in)
1986
102.7 mm (4.0 in)
1987
112.5 mm (4.4 in)
1988
73.2 mm (2.9 in)
1989
76.7 mm (3.0 in)
1990
84.3 mm (3.3 in)
1991
104.5 mm (4.1 in)
1992
51.7 mm (2.0 in)
1993
93.5 mm (3.7 in)
1994
70.9 mm (2.8 in)
1995
125.2 mm (4.9 in)
1996
194.8 mm (7.7 in)
1997
175.5 mm (6.9 in)
1998
109.0 mm (4.3 in)
1999
53.9 mm (2.1 in)
2000
162.4 mm (6.4 in)
2001
118.3 mm (4.7 in)
2002
58.2 mm (2.3 in)
2003
82.1 mm (3.2 in)
2004
90.7 mm (3.6 in)
2005
61.0 mm (2.4 in)
2006
67.4 mm (2.7 in)
2007
57.1 mm (2.2 in)
2008
93.5 mm (3.7 in)
2009
109.0 mm (4.3 in)
2010
79.0 mm (3.1 in)
2011
97.3 mm (3.8 in)
2012
73.2 mm (2.9 in)
2013
33.5 mm (1.3 in)
2014
67.1 mm (2.6 in)
2015
46.0 mm (1.8 in)
2016
261.3 mm (10.3 in)
2017
84.0 mm (3.3 in)
2018
22.6 mm (0.9 in)
2020
91.7 mm (3.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Johannesburg Intl, 1973 to 2020. The record is 66 days in 1978, marked on the chart; the median year is 10 days.
Longest dry spell (CDD) at Johannesburg Intl by year
Year
Longest dry spell (CDD)
1973
1 day
1974
7 days
1975
2 days
1976
10 days
1977
52 days
1978
66 days
1979
35 days
1980
32 days
1981
56 days
1982
64 days
1983
28 days
1984
8 days
1985
12 days
1986
11 days
1987
21 days
1988
10 days
1989
14 days
1990
45 days
1991
35 days
1992
34 days
1993
24 days
1994
29 days
1995
22 days
1996
25 days
1997
33 days
1998
55 days
1999
6 days
2000
5 days
2001
3 days
2002
10 days
2003
17 days
2004
17 days
2005
15 days
2006
5 days
2007
4 days
2008
5 days
2009
5 days
2010
3 days
2011
4 days
2012
4 days
2013
5 days
2014
3 days
2015
4 days
2016
4 days
2017
4 days
2018
4 days
2020
3 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Download the Data
Data for Johannesburg Intl standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Johannesburg Intl threshold days by year: CSV or JSON. Field meanings are on the data page.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.