1. Station Data & Metadata
  2. ZA__ASOS
  3. or select from map
Information Last Ob Photographs Meteogram Network Table Neighbors Monthly Summaries Observation History Wind Roses Custom Wind Roses Data Calendar Download

Data Calendar for Johannesburg - O. R. Tambo

The calendar chart below shows the daily reported climate variables. You can click on a date to display the values for all sites for that day. Time stamps are displayed in the Africa/Johannesburg timezone. Wind speeds are in mph and temperatures in Fahrenheit. Values flagged with a (E) are estimated by the IEM.

Year:  

Month:  

 

May 2025Jun 2025 Jul 2025
SundayMondayTuesdayWednesday ThursdayFridaySaturday
01
High: 66.2
Low: 44.6
Precip: M
Avg Wind: SW @ 6.8
RH% Min/Max: 13-66
Feel Min/Max: 42 to 66		02
High: 68
Low: 41
Precip: M
Avg Wind: SSW @ 5.9
Gust:
SSE @ 17
(10:30 PM)
RH% Min/Max: 12-48
Feel Min/Max: 36 to 68		03
High: 66.2
Low: 50
Precip: M
Avg Wind: WSW @ 8.4
RH% Min/Max: 24-44
Feel Min/Max: 50 to 66		04
High: 68
Low: 46.4
Precip: M
Avg Wind: SSW @ 5.8
Gust:
S @ 17
(7:30 PM)
RH% Min/Max: 17-81
Feel Min/Max: 44 to 68		05
High: 60.8
Low: 41
Precip: M
Avg Wind: N @ 12.0
RH% Min/Max: 48-100
Feel Min/Max: 38 to 61		06
High: 66.2
Low: 46.4
Precip: M
Avg Wind: NW @ 9.7
RH% Min/Max: 42-87
Feel Min/Max: 41 to 66		07
High: 66.2
Low: 51.8
Precip: M
Avg Wind: WNW @ 8.9
RH% Min/Max: 34-77
Feel Min/Max: 52 to 66
08
High: 62.6
Low: 48.2
Precip: M
Avg Wind: NW @ 12.1
RH% Min/Max: 39-76
Feel Min/Max: 44 to 63		09
High: 55.4
Low: 39.2
Precip: M
Avg Wind: NW @ 14.4
Gust:
NW @ 30
(4:30 PM)
RH% Min/Max: 32-87
Feel Min/Max: 31 to 55		10
High: 48.2
Low: 35.6
Precip: M
Avg Wind: SSW @ 18.1
Gust:
SSW @ 32
(5:00 AM)
RH% Min/Max: 57-93
Feel Min/Max: 25 to 42		11
High: 59
Low: 33.8
Precip: M
Avg Wind: SSW @ 8.4
RH% Min/Max: 30-100
Feel Min/Max: 23 to 59		12
High: 59
Low: 35.6
Precip: M
Avg Wind: ENE @ 4.5
RH% Min/Max: 36-93
Feel Min/Max: 31 to 59		13
High: 60.8
Low: 39.2
Precip: M
Avg Wind: NNE @ 4.6
RH% Min/Max: 27-81
Feel Min/Max: 36 to 61		14
High: 62.6
Low: 39.2
Precip: M
Avg Wind: NE @ 5.9
RH% Min/Max: 25-75
Feel Min/Max: 37 to 63
15
High: 59
Low: 42.8
Precip: M
Avg Wind: N @ 8.7
RH% Min/Max: 39-87
Feel Min/Max: 37 to 59		16
High: 62.6
Low: 44.6
Precip: M
Avg Wind: SW @ 6.8
RH% Min/Max: 34-81
Feel Min/Max: 40 to 63		17
High: 66.2
Low: 42.8
Precip: M
Avg Wind: SSW @ 7.4
RH% Min/Max: 28-76
Feel Min/Max: 39 to 66		18
High: 66.2
Low: 46.4
Precip: M
Avg Wind: SW @ 8.5
RH% Min/Max: 26-61
Feel Min/Max: 43 to 66		19
High: 66.2
Low: 46.4
Precip: M
Avg Wind: NW @ 6.4
RH% Min/Max: 26-53
Feel Min/Max: 45 to 66		20
High: 66.2
Low: 44.6
Precip: M
Avg Wind: WSW @ 9.1
Gust:
WNW @ 25
(1:00 PM)
RH% Min/Max: 18-50
Feel Min/Max: 40 to 66		21
High: 64.4
Low: 35.6
Precip: M
RH% Min/Max: 16-55
Feel Min/Max: 27 to 64
22

Precip: M		232425262728
29300102030405

The data presented here provided by IEM API webservice: daily.json. A simple CSV option exists as well.

Daily High/Low Plot


Description: This chart of the monthly temperature data. The bars are the observations and the dots are climatology.

Daily Rainfall


Description: This chart is of daily precipitation for the month. The red line would be an average month while the blue line and bars are observations.

Daily Average Wind Speeds


Description: This chart is of the daily average wind speeds.

The data presented here provided by IEM API webservice: daily.json. A simple CSV option exists as well.