WashingtonPost.com WeatherPost
International WeatherNational WeatherArea WeatherWeather ImagesHistorical Weather Data

Johannesburg, South Africa
H I S T O R I C A L   W E A T H E R   D A T A

Average Temperature
  Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
°F 61 69 68 66 61 57 51 52 56 62 64 66 67
°C 16 20 20 18 16 13 10 11 13 16 17 18 19
Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0


Average High Temperature
  Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
°F 70 77 75 74 69 66 60 61 65 71 73 74 76
°C 21 25 23 23 20 18 15 16 18 21 22 23 24
Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0


Average Low Temperature
  Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
°F 52 60 59 58 53 48 42 42 46 51 54 56 59
°C 11 15 15 14 11 8 5 5 7 10 12 13 15
Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0


Highest Recorded Temperature
  Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
°F 92 91 92 89 84 82 74 73 79 87 89 90 90
°C 33 32 33 31 28 27 23 22 26 30 31 32 32
Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0


Lowest Recorded Temperature
  Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
°F 19 46 48 37 27 30 19 23 27 30 37 36 48
°C -7 7 8 2 -2 -1 -7 -5 -2 -1 2 2 8
Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0


Average Precipitation
  Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
in. 28.7 4.9 3.8 3.3 2.1 0.7 0.3 0.2 0.2 1.1 2.9 4.7 4.3
mm 728 124 96 83 53 17 7 5 5 27 73 119 109
Years Charted: 40 Source: International Station Meteorological Climate Summary, Version 4.0


Average Wind Speed
  Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
mph 9 9 9 8 8 9 9 8 10 11 11 10 9
km/h 14 14 14 12 12 14 14 12 16 18 18 16 14
Years Charted: 17 Source: International Station Meteorological Climate Summary, Version 4.0


Average Morning Relative Humidity
  Total Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
% 77 85 88 85 80 70 70 68 66 68 77 82 84
Years Charted: 15 Source: International Station Meteorological Climate Summary, Version 4.0


Average Afternoon Relative Humidity
  Total Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
% 44 52 54 53 47 38 38 34 32 34 42 49 51
Years Charted: 17 Source: International Station Meteorological Climate Summary, Version 4.0



Questions? Comments? Suggestions? E-mail weather@weatherpost.com