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Buenos Aires vs Johannesburg

Cfa Humid subtropicalCwa Monsoon-influenced humid subtropical

Comparing Buenos Aires change · Johannesburg change

Bottom line

Buenos Aires and Johannesburg have nearly identical year-round temperatures; Buenos Aires is the wetter, with 11 in more rain a year, and Johannesburg the sunnier.

Year-round temp About the same within 2°F on the year

Wetter Buenos Aires 11 in more a year

Sunnier Johannesburg 11 pp less cloud

Colder winters Johannesburg 6°F colder nights

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 11 in 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 (°F) Johannesburg runs higher most of the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Buenos Aires	84	82	79	73	66	61	59	63	66	71	77	83
Johannesburg	83	83	81	77	73	68	68	74	80	83	83	83
Difference	-1	+1	+2	+4	+6	+7	+9	+11	+14	+11	+5	+1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Buenos Aires	84	82	79	73	66	61
Johannesburg	83	83	81	77	73	68
Difference	-1	+1	+2	+4	+6	+7

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Buenos Aires	59	63	66	71	77	83
Johannesburg	68	74	80	83	83	83
Difference	+9	+11	+14	+11	+5	+1

Avg low (°F) Buenos Aires runs higher most of the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Buenos Aires	69	68	66	59	54	48	47	49	52	57	62	66
Johannesburg	61	61	58	53	47	42	40	45	52	56	58	60
Difference	-8	-7	-7	-6	-7	-7	-6	-4	-1	-2	-4	-6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Buenos Aires	69	68	66	59	54	48
Johannesburg	61	61	58	53	47	42
Difference	-8	-7	-7	-6	-7	-7

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Buenos Aires	47	49	52	57	62	66
Johannesburg	40	45	52	56	58	60
Difference	-6	-4	-1	-2	-4	-6

Precipitation (in) Varies through the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Buenos Aires	4.1	4.4	4.1	4.2	3.3	2.1	2.4	2.5	2.7	4.9	3.7	3.7
Johannesburg	5.3	4.9	4.1	1.9	0.3	0.1	0.2	0.1	0.6	3	5.7	4.8
Difference	+1.1	+0.6	+0.1	-2.3	-3	-2	-2.2	-2.3	-2.1	-1.8	+1.9	+1.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Buenos Aires	4.1	4.4	4.1	4.2	3.3	2.1
Johannesburg	5.3	4.9	4.1	1.9	0.3	0.1
Difference	+1.1	+0.6	+0.1	-2.3	-3	-2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Buenos Aires	2.4	2.5	2.7	4.9	3.7	3.7
Johannesburg	0.2	0.1	0.6	3	5.7	4.8
Difference	-2.2	-2.3	-2.1	-1.8	+1.9	+1.1

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.

How we build these numbers →

← change Buenos Aires · change Johannesburg → · Buenos Aires page · Johannesburg page