Home › Compare › Castries vs Atlanta
Castries vs Atlanta
Comparing Castries change · Atlanta change
Castries is the warmer of the two — about 17°F on the annual average; Castries is the wetter, with 27 in more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Castries and Atlanta, in everyday terms.
Summers
Atlanta has hotter summers
Castries: Warm
Atlanta: Hot
Winters
Castries has far milder winters
Castries: Stays warm
Atlanta: Chilly
Rain & snow
Castries is wetter
Castries: Very wet
Atlanta: Wet
Sky
Castries is sunnier
Castries: Fairly sunny
Atlanta: Partly cloudy
Month-by-month charts
Temperature
Castries is the warmer of the two — about 17°F on the annual average.
Precipitation
Castries is the wetter — about 27 in more across the year.
Clear skies
Castries 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) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Atlanta | 54 | 58 | 66 | 74 | 81 | 87 | 90 | 89 | 84 | 74 | 64 | 56 |
| Difference | -26 | -22 | -15 | -8 | -2 | +4 | +7 | +5 | — | -9 | -18 | -25 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Atlanta | 54 | 58 | 66 | 74 | 81 | 87 |
| Difference | -26 | -22 | -15 | -8 | -2 | +4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Atlanta | 90 | 89 | 84 | 74 | 64 | 56 |
| Difference | +7 | +5 | — | -9 | -18 | -25 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Atlanta | 36 | 39 | 45 | 53 | 61 | 69 | 72 | 71 | 66 | 55 | 44 | 38 |
| Difference | -42 | -39 | -32 | -26 | -19 | -12 | -9 | -10 | -16 | -27 | -37 | -41 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Atlanta | 36 | 39 | 45 | 53 | 61 | 69 |
| Difference | -42 | -39 | -32 | -26 | -19 | -12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Atlanta | 72 | 71 | 66 | 55 | 44 | 38 |
| Difference | -9 | -10 | -16 | -27 | -37 | -41 |
Precipitation (in) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| 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 | +0.1 | +1.6 | +2.1 | +0.3 | -0.9 | -0.7 | -3.8 | -7.2 | -5 | -6.4 | -5.6 | -1.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Atlanta | 4.6 | 4.6 | 4.7 | 3.8 | 3.6 | 4.5 |
| Difference | +0.1 | +1.6 | +2.1 | +0.3 | -0.9 | -0.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Atlanta | 4.8 | 4.3 | 3.8 | 3.3 | 4 | 4.6 |
| Difference | -3.8 | -7.2 | -5 | -6.4 | -5.6 | -1.3 |
Snowfall (in)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | — | — | — | — | — | — | — | — | — | — | — | — |
| 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 |
|---|---|---|---|---|---|---|
| Castries | — | — | — | — | — | — |
| Atlanta | 1 | 0.4 | 0.4 | 0 | 0 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | — | — | — | — | — | — |
| Atlanta | 0 | 0 | 0 | 0 | 0 | 0.4 |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Atlanta runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Atlanta | 58 | 61 | 58 | 53 | 53 | 57 | 57 | 55 | 49 | 44 | 49 | 59 |
| Difference | +19 | +22 | +16 | +4 | +1 | -1 | +7 | +9 | -2 | -7 | +3 | +18 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Atlanta | 58 | 61 | 58 | 53 | 53 | 57 |
| Difference | +19 | +22 | +16 | +4 | +1 | -1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Atlanta | 57 | 55 | 49 | 44 | 49 | 59 |
| Difference | +7 | +9 | -2 | -7 | +3 | +18 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Atlanta | 83 | 83 | 81 | 78 | 75 | 73 | 70 | 70 | 71 | 72 | 76 | 82 |
| Difference | +7 | +8 | +6 | +2 | -2 | -6 | -8 | -9 | -8 | -7 | -3 | +6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Atlanta | 83 | 83 | 81 | 78 | 75 | 73 |
| Difference | +7 | +8 | +6 | +2 | -2 | -6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Atlanta | 70 | 70 | 71 | 72 | 76 | 82 |
| Difference | -8 | -9 | -8 | -7 | -3 | +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. Castries trends → · Atlanta trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
Methodology & sources
Castries
Temperature — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Precipitation — 1991–2020 normals computed from 10 years of daily observations at LE Lamentin, a weather station, about 66 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 Castries · change Atlanta → · Castries page · Atlanta page