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Buenos Aires vs Johannesburg
Comparing Buenos Aires change · Johannesburg change
Buenos Aires and Johannesburg have nearly identical year-round temperatures; Buenos Aires is the wetter, with 280 mm more rain a year, and Johannesburg the sunnier.
How the seasons compare
The differences between Buenos Aires and Johannesburg, in everyday terms.
Summers
Summers are nearly the same
Buenos Aires: Warm
Johannesburg: Warm
Winters
Buenos Aires has milder winters
Buenos Aires: Cool
Johannesburg: Cool
Rain & snow
Buenos Aires is wetter
Buenos Aires: Wet
Johannesburg: Moderate rainfall
Sky
Johannesburg is sunnier
Buenos Aires: Partly cloudy
Johannesburg: Fairly sunny
Month-by-month charts
Temperature
Buenos Aires and Johannesburg run remarkably close all year.
Precipitation
Buenos Aires is the wetter — about 280 mm more across the year.
Clear skies
Johannesburg has the clearer skies — the higher line.
Exact monthly numbers
Tap a metric to open its full table. Desktop shows all twelve months; on a phone each metric splits into Jan–Jun and Jul–Dec.
Avg high (°C) Johannesburg runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires | 29 | 28 | 26 | 23 | 19 | 16 | 15 | 17 | 19 | 22 | 25 | 28 |
| Johannesburg | 28 | 28 | 27 | 25 | 23 | 20 | 20 | 23 | 27 | 28 | 28 | 28 |
| Difference | -1 | — | +1 | +2 | +4 | +4 | +5 | +6 | +8 | +6 | +3 | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Buenos Aires | 29 | 28 | 26 | 23 | 19 | 16 |
| Johannesburg | 28 | 28 | 27 | 25 | 23 | 20 |
| Difference | -1 | — | +1 | +2 | +4 | +4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Buenos Aires | 15 | 17 | 19 | 22 | 25 | 28 |
| Johannesburg | 20 | 23 | 27 | 28 | 28 | 28 |
| Difference | +5 | +6 | +8 | +6 | +3 | — |
Avg low (°C) Buenos Aires runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires | 21 | 20 | 19 | 15 | 12 | 9 | 8 | 9 | 11 | 14 | 17 | 19 |
| Johannesburg | 16 | 16 | 15 | 12 | 8 | 5 | 5 | 7 | 11 | 13 | 15 | 16 |
| Difference | -5 | -4 | -4 | -3 | -4 | -4 | -3 | -2 | — | -1 | -2 | -3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Buenos Aires | 21 | 20 | 19 | 15 | 12 | 9 |
| Johannesburg | 16 | 16 | 15 | 12 | 8 | 5 |
| Difference | -5 | -4 | -4 | -3 | -4 | -4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Buenos Aires | 8 | 9 | 11 | 14 | 17 | 19 |
| Johannesburg | 5 | 7 | 11 | 13 | 15 | 16 |
| Difference | -3 | -2 | — | -1 | -2 | -3 |
Precipitation (mm) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires | 105 | 111 | 103 | 106 | 83 | 53 | 61 | 63 | 68 | 123 | 94 | 95 |
| Johannesburg | 134 | 125 | 104 | 47 | 7 | 3 | 4 | 3 | 15 | 77 | 144 | 122 |
| Difference | +29 | +15 | +2 | -59 | -76 | -51 | -57 | -60 | -53 | -47 | +49 | +28 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Buenos Aires | 105 | 111 | 103 | 106 | 83 | 53 |
| Johannesburg | 134 | 125 | 104 | 47 | 7 | 3 |
| Difference | +29 | +15 | +2 | -59 | -76 | -51 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Buenos Aires | 61 | 63 | 68 | 123 | 94 | 95 |
| Johannesburg | 4 | 3 | 15 | 77 | 144 | 122 |
| Difference | -57 | -60 | -53 | -47 | +49 | +28 |
Cloud cover (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires | 47 | 47 | 46 | 51 | 56 | 58 | 59 | 54 | 55 | 55 | 50 | 46 |
| Johannesburg | 61 | 57 | 50 | 40 | 25 | 20 | 18 | 21 | 29 | 47 | 58 | 65 |
| Difference | +14 | +10 | +4 | -11 | -31 | -38 | -41 | -33 | -26 | -8 | +9 | +19 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Buenos Aires | 47 | 47 | 46 | 51 | 56 | 58 |
| Johannesburg | 61 | 57 | 50 | 40 | 25 | 20 |
| Difference | +14 | +10 | +4 | -11 | -31 | -38 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Buenos Aires | 59 | 54 | 55 | 55 | 50 | 46 |
| Johannesburg | 18 | 21 | 29 | 47 | 58 | 65 |
| Difference | -41 | -33 | -26 | -8 | +9 | +19 |
Relative humidity (%) Buenos Aires runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires | 69 | 71 | 74 | 76 | 80 | 81 | 82 | 80 | 78 | 76 | 72 | 69 |
| Johannesburg | 65 | 64 | 64 | 61 | 54 | 54 | 50 | 44 | 40 | 49 | 57 | 63 |
| Difference | -4 | -7 | -10 | -15 | -26 | -28 | -32 | -36 | -38 | -27 | -15 | -6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Buenos Aires | 69 | 71 | 74 | 76 | 80 | 81 |
| Johannesburg | 65 | 64 | 64 | 61 | 54 | 54 |
| Difference | -4 | -7 | -10 | -15 | -26 | -28 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Buenos Aires | 82 | 80 | 78 | 76 | 72 | 69 |
| Johannesburg | 50 | 44 | 40 | 49 | 57 | 63 |
| Difference | -32 | -36 | -38 | -27 | -15 | -6 |
How both climates are changing
Both cities are warming. Each city has its own warming trend; see its trends page for the year-by-year detail. Buenos Aires trends → · Johannesburg trends →
Methodology & sources
Buenos Aires
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Aeroparque Jorge Newbery, a weather station, about 7 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.
Johannesburg
Temperature & precipitation — 1991–2020 normals computed from 24 years of daily observations at Pretoria/irene, a weather station, about 36 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.
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