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Castries vs Savannah
Comparing Castries change · Savannah change
Castries is the warmer of the two — about 14°F on the annual average; Castries is the wetter, with 29 in more rain a year.
How the seasons compare
The differences between Castries and Savannah, in everyday terms.
Summers
Savannah has much hotter summers
Castries: Warm
Savannah: Hot
Winters
Castries has far milder winters
Castries: Stays warm
Savannah: Cool
Rain & snow
Castries is wetter
Castries: Very wet
Savannah: Wet
Sky
Similar amounts of sun
Castries: Fairly sunny
Savannah: Partly cloudy
Month-by-month charts
Temperature
Castries is the warmer of the two — about 14°F on the annual average.
Precipitation
Castries is the wetter — about 29 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Savannah | 61 | 65 | 71 | 78 | 85 | 90 | 92 | 91 | 86 | 79 | 70 | 64 |
| Difference | -19 | -15 | -9 | -3 | +2 | +7 | +9 | +7 | +2 | -4 | -12 | -18 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Savannah | 61 | 65 | 71 | 78 | 85 | 90 |
| Difference | -19 | -15 | -9 | -3 | +2 | +7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Savannah | 92 | 91 | 86 | 79 | 70 | 64 |
| Difference | +9 | +7 | +2 | -4 | -12 | -18 |
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 |
| Savannah | 40 | 43 | 49 | 55 | 63 | 71 | 74 | 73 | 69 | 59 | 48 | 43 |
| Difference | -38 | -35 | -29 | -24 | -17 | -10 | -7 | -8 | -13 | -23 | -33 | -37 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Savannah | 40 | 43 | 49 | 55 | 63 | 71 |
| Difference | -38 | -35 | -29 | -24 | -17 | -10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Savannah | 74 | 73 | 69 | 59 | 48 | 43 |
| Difference | -7 | -8 | -13 | -23 | -33 | -37 |
Precipitation (in) Castries runs higher most of 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 |
| Savannah | 3.3 | 2.8 | 3.5 | 3.4 | 3.6 | 6.7 | 5.8 | 5.5 | 4.4 | 3.7 | 2.4 | 3.2 |
| Difference | -1.2 | -0.2 | +0.9 | -0.1 | -0.9 | +1.4 | -2.8 | -6 | -4.5 | -6 | -7.2 | -2.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Savannah | 3.3 | 2.8 | 3.5 | 3.4 | 3.6 | 6.7 |
| Difference | -1.2 | -0.2 | +0.9 | -0.1 | -0.9 | +1.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Savannah | 5.8 | 5.5 | 4.4 | 3.7 | 2.4 | 3.2 |
| Difference | -2.8 | -6 | -4.5 | -6 | -7.2 | -2.7 |
Cloud cover (%) Varies through 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 |
| Savannah | 56 | 58 | 53 | 49 | 50 | 55 | 56 | 56 | 51 | 44 | 46 | 55 |
| Difference | +18 | +19 | +11 | — | -2 | -4 | +6 | +10 | — | -7 | — | +14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Savannah | 56 | 58 | 53 | 49 | 50 | 55 |
| Difference | +18 | +19 | +11 | — | -2 | -4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Savannah | 56 | 56 | 51 | 44 | 46 | 55 |
| Difference | +6 | +10 | — | -7 | — | +14 |
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 |
| Savannah | 81 | 80 | 77 | 73 | 71 | 74 | 75 | 77 | 78 | 77 | 78 | 81 |
| Difference | +5 | +6 | +2 | -3 | -7 | -4 | -4 | -2 | -1 | -2 | -1 | +4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Savannah | 81 | 80 | 77 | 73 | 71 | 74 |
| Difference | +5 | +6 | +2 | -3 | -7 | -4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Savannah | 75 | 77 | 78 | 77 | 78 | 81 |
| Difference | -4 | -2 | -1 | -2 | -1 | +4 |
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 → · Savannah 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.
Savannah
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Savannah Intl AP (NOAA GHCN station USW00003822), about 11 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 Savannah → · Castries page · Savannah page