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Cascais vs Atlanta
Comparing Cascais change · Atlanta change
Cascais and Atlanta have nearly identical year-round temperatures; Atlanta is the wetter, with 22 in more rain a year.
How the seasons compare
The differences between Cascais and Atlanta, in everyday terms.
Summers
Atlanta has much hotter summers
Cascais: Warm
Atlanta: Hot
Winters
Cascais has much milder winters
Cascais: Cool
Atlanta: Chilly
Rain & snow
Atlanta is wetter
Cascais: Moderate rainfall
Atlanta: Wet
Sky
Similar amounts of sun
Cascais: Partly cloudy
Atlanta: Partly cloudy
Month-by-month charts
Temperature
Cascais and Atlanta run remarkably close all year.
Precipitation
Atlanta is the wetter — about 22 in more across the year.
Clear skies
The two cities see a similar amount of sun.
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) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cascais | 59 | 61 | 65 | 68 | 73 | 78 | 82 | 83 | 79 | 73 | 64 | 59 |
| Atlanta | 54 | 58 | 66 | 74 | 81 | 87 | 90 | 89 | 84 | 74 | 64 | 56 |
| Difference | -5 | -3 | — | +6 | +8 | +9 | +8 | +6 | +5 | +2 | — | -3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cascais | 59 | 61 | 65 | 68 | 73 | 78 |
| Atlanta | 54 | 58 | 66 | 74 | 81 | 87 |
| Difference | -5 | -3 | — | +6 | +8 | +9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cascais | 82 | 83 | 79 | 73 | 64 | 59 |
| Atlanta | 90 | 89 | 84 | 74 | 64 | 56 |
| Difference | +8 | +6 | +5 | +2 | — | -3 |
Avg low (°F) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cascais | 48 | 49 | 52 | 54 | 58 | 62 | 65 | 66 | 64 | 60 | 53 | 49 |
| Atlanta | 36 | 39 | 45 | 53 | 61 | 69 | 72 | 71 | 66 | 55 | 44 | 38 |
| Difference | -12 | -10 | -7 | -2 | +3 | +6 | +7 | +5 | +2 | -5 | -9 | -11 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cascais | 48 | 49 | 52 | 54 | 58 | 62 |
| Atlanta | 36 | 39 | 45 | 53 | 61 | 69 |
| Difference | -12 | -10 | -7 | -2 | +3 | +6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cascais | 65 | 66 | 64 | 60 | 53 | 49 |
| Atlanta | 72 | 71 | 66 | 55 | 44 | 38 |
| Difference | +7 | +5 | +2 | -5 | -9 | -11 |
Precipitation (in) Atlanta runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cascais | 4 | 2.5 | 2.9 | 2.6 | 2.2 | 0.5 | 0.1 | 0.3 | 1.4 | 4.4 | 3.9 | 4 |
| Atlanta | 4.6 | 4.6 | 4.7 | 3.8 | 3.6 | 4.5 | 4.8 | 4.3 | 3.8 | 3.3 | 4 | 4.6 |
| Difference | +0.5 | +2.1 | +1.8 | +1.3 | +1.3 | +4 | +4.7 | +4 | +2.4 | -1.1 | +0.1 | +0.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cascais | 4 | 2.5 | 2.9 | 2.6 | 2.2 | 0.5 |
| Atlanta | 4.6 | 4.6 | 4.7 | 3.8 | 3.6 | 4.5 |
| Difference | +0.5 | +2.1 | +1.8 | +1.3 | +1.3 | +4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cascais | 0.1 | 0.3 | 1.4 | 4.4 | 3.9 | 4 |
| Atlanta | 4.8 | 4.3 | 3.8 | 3.3 | 4 | 4.6 |
| Difference | +4.7 | +4 | +2.4 | -1.1 | +0.1 | +0.6 |
Snowfall (in)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cascais | — | — | — | — | — | — | — | — | — | — | — | — |
| Atlanta | 1 | 0.4 | 0.4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.4 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cascais | — | — | — | — | — | — |
| Atlanta | 1 | 0.4 | 0.4 | 0 | 0 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cascais | — | — | — | — | — | — |
| Atlanta | 0 | 0 | 0 | 0 | 0 | 0.4 |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cascais | 60 | 58 | 58 | 58 | 53 | 48 | 43 | 41 | 48 | 57 | 60 | 62 |
| Atlanta | 58 | 61 | 58 | 53 | 53 | 57 | 57 | 55 | 49 | 44 | 49 | 59 |
| Difference | -2 | +3 | -1 | -5 | — | +9 | +15 | +14 | — | -13 | -11 | -3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cascais | 60 | 58 | 58 | 58 | 53 | 48 |
| Atlanta | 58 | 61 | 58 | 53 | 53 | 57 |
| Difference | -2 | +3 | -1 | -5 | — | +9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cascais | 43 | 41 | 48 | 57 | 60 | 62 |
| Atlanta | 57 | 55 | 49 | 44 | 49 | 59 |
| Difference | +15 | +14 | — | -13 | -11 | -3 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cascais | 81 | 80 | 80 | 79 | 79 | 80 | 80 | 80 | 81 | 81 | 81 | 82 |
| Atlanta | 83 | 83 | 81 | 78 | 75 | 73 | 70 | 70 | 71 | 72 | 76 | 82 |
| Difference | +2 | +2 | +1 | -1 | -4 | -7 | -10 | -10 | -10 | -9 | -5 | +1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cascais | 81 | 80 | 80 | 79 | 79 | 80 |
| Atlanta | 83 | 83 | 81 | 78 | 75 | 73 |
| Difference | +2 | +2 | +1 | -1 | -4 | -7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cascais | 80 | 80 | 81 | 81 | 81 | 82 |
| Atlanta | 70 | 70 | 71 | 72 | 76 | 82 |
| Difference | -10 | -10 | -10 | -9 | -5 | +1 |
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. Cascais trends → · Atlanta trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
Methodology & sources
Cascais
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Lisboa Geofisica, a weather station, about 24 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.
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.
← change Cascais · change Atlanta → · Cascais page · Atlanta page