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Atlanta vs Cape Town
Comparing Atlanta change · Cape Town change
Atlanta and Cape Town have nearly identical year-round temperatures; Atlanta is the wetter, with 772 mm more rain a year, and Cape Town the sunnier.
How the seasons compare
The differences between Atlanta and Cape Town, in everyday terms.
Summers
Atlanta has much hotter summers
Atlanta: Hot
Cape Town: Warm
Winters
Cape Town has milder winters
Atlanta: Chilly
Cape Town: Cool
Rain & snow
Atlanta is much wetter
Atlanta: Wet
Cape Town: Fairly dry
Sky
Cape Town is sunnier
Atlanta: Partly cloudy
Cape Town: Fairly sunny
Month-by-month charts
Temperature
Atlanta and Cape Town run remarkably close all year.
Precipitation
Atlanta is the wetter — about 772 mm more across the year.
Clear skies
Cape Town 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) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Atlanta | 12 | 15 | 19 | 23 | 27 | 31 | 32 | 32 | 29 | 24 | 18 | 13 |
| Cape Town | 28 | 28 | 27 | 25 | 21 | 19 | 18 | 19 | 20 | 23 | 25 | 27 |
| Difference | +16 | +14 | +8 | +1 | -6 | -12 | -14 | -13 | -9 | — | +7 | +13 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Atlanta | 12 | 15 | 19 | 23 | 27 | 31 |
| Cape Town | 28 | 28 | 27 | 25 | 21 | 19 |
| Difference | +16 | +14 | +8 | +1 | -6 | -12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Atlanta | 32 | 32 | 29 | 24 | 18 | 13 |
| Cape Town | 18 | 19 | 20 | 23 | 25 | 27 |
| Difference | -14 | -13 | -9 | — | +7 | +13 |
Avg low (°C) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Atlanta | 2 | 4 | 7 | 11 | 16 | 20 | 22 | 22 | 19 | 13 | 7 | 4 |
| Cape Town | 16 | 16 | 15 | 12 | 10 | 7 | 7 | 7 | 9 | 11 | 13 | 15 |
| Difference | +14 | +12 | +7 | — | -7 | -13 | -15 | -15 | -10 | -2 | +6 | +12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Atlanta | 2 | 4 | 7 | 11 | 16 | 20 |
| Cape Town | 16 | 16 | 15 | 12 | 10 | 7 |
| Difference | +14 | +12 | +7 | — | -7 | -13 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Atlanta | 22 | 22 | 19 | 13 | 7 | 4 |
| Cape Town | 7 | 7 | 9 | 11 | 13 | 15 |
| Difference | -15 | -15 | -10 | -2 | +6 | +12 |
Precipitation (mm) Atlanta runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Atlanta | 117 | 116 | 119 | 97 | 90 | 115 | 121 | 109 | 97 | 83 | 101 | 116 |
| Cape Town | 6 | 16 | 18 | 57 | 81 | 90 | 79 | 59 | 31 | 41 | 19 | 12 |
| Difference | -111 | -100 | -101 | -39 | -10 | -25 | -41 | -51 | -66 | -42 | -82 | -104 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Atlanta | 117 | 116 | 119 | 97 | 90 | 115 |
| Cape Town | 6 | 16 | 18 | 57 | 81 | 90 |
| Difference | -111 | -100 | -101 | -39 | -10 | -25 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Atlanta | 121 | 109 | 97 | 83 | 101 | 116 |
| Cape Town | 79 | 59 | 31 | 41 | 19 | 12 |
| Difference | -41 | -51 | -66 | -42 | -82 | -104 |
Snowfall (cm)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Atlanta | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Cape Town | — | — | — | — | — | — | — | — | — | — | — | — |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Atlanta | 3 | 1 | 1 | 0 | 0 | 0 |
| Cape Town | — | — | — | — | — | — |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Atlanta | 0 | 0 | 0 | 0 | 0 | 1 |
| Cape Town | — | — | — | — | — | — |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Atlanta runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Atlanta | 58 | 61 | 58 | 53 | 53 | 57 | 57 | 55 | 49 | 44 | 49 | 59 |
| Cape Town | 26 | 26 | 28 | 33 | 41 | 42 | 38 | 42 | 42 | 37 | 35 | 30 |
| Difference | -32 | -35 | -30 | -20 | -13 | -15 | -19 | -13 | -7 | -7 | -14 | -29 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Atlanta | 58 | 61 | 58 | 53 | 53 | 57 |
| Cape Town | 26 | 26 | 28 | 33 | 41 | 42 |
| Difference | -32 | -35 | -30 | -20 | -13 | -15 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Atlanta | 57 | 55 | 49 | 44 | 49 | 59 |
| Cape Town | 38 | 42 | 42 | 37 | 35 | 30 |
| Difference | -19 | -13 | -7 | -7 | -14 | -29 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Atlanta | 83 | 83 | 81 | 78 | 75 | 73 | 70 | 70 | 71 | 72 | 76 | 82 |
| Cape Town | 65 | 66 | 68 | 71 | 76 | 80 | 82 | 82 | 81 | 76 | 71 | 67 |
| Difference | -18 | -17 | -13 | -7 | +1 | +7 | +11 | +12 | +10 | +4 | -5 | -15 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Atlanta | 83 | 83 | 81 | 78 | 75 | 73 |
| Cape Town | 65 | 66 | 68 | 71 | 76 | 80 |
| Difference | -18 | -17 | -13 | -7 | +1 | +7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Atlanta | 70 | 70 | 71 | 72 | 76 | 82 |
| Cape Town | 82 | 82 | 81 | 76 | 71 | 67 |
| Difference | +11 | +12 | +10 | +4 | -5 | -15 |
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. Atlanta trends → · Cape Town trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
Methodology & sources
Atlanta
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Atlanta Hartsfield-jackson Int (NOAA GHCN station USW00013874), about 14 km from the city centre.
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.
Cape Town
Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Cape Town Intl, a weather station, about 17 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.
← change Atlanta · change Cape Town → · Atlanta page · Cape Town page