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Alexandria vs Castries
Comparing Alexandria change · Castries change
Castries is the warmer of the two — about 11°F on the annual average; Castries is the wetter, with 68 in more rain a year, and Alexandria the sunnier.
How the seasons compare
The differences between Alexandria and Castries, in everyday terms.
Summers
Alexandria has hotter summers
Alexandria: Hot
Castries: Warm
Winters
Castries has far milder winters
Alexandria: Cool
Castries: Stays warm
Rain & snow
Castries is much wetter
Alexandria: Very dry
Castries: Very wet
Sky
Alexandria is sunnier
Alexandria: Fairly sunny
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 11°F on the annual average.
Precipitation
Castries is the wetter — about 68 in more across the year.
Clear skies
Alexandria 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) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alexandria | 65 | 66 | 70 | 76 | 81 | 85 | 87 | 88 | 87 | 82 | 75 | 68 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +15 | +14 | +10 | +6 | +2 | -2 | -4 | -4 | -3 | +1 | +7 | +13 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Alexandria | 65 | 66 | 70 | 76 | 81 | 85 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Difference | +15 | +14 | +10 | +6 | +2 | -2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Alexandria | 87 | 88 | 87 | 82 | 75 | 68 |
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | -4 | -4 | -3 | +1 | +7 | +13 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alexandria | 49 | 49 | 53 | 57 | 64 | 71 | 75 | 76 | 72 | 66 | 59 | 52 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +29 | +28 | +25 | +22 | +17 | +10 | +6 | +6 | +10 | +15 | +22 | +28 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Alexandria | 49 | 49 | 53 | 57 | 64 | 71 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Difference | +29 | +28 | +25 | +22 | +17 | +10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Alexandria | 75 | 76 | 72 | 66 | 59 | 52 |
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +6 | +6 | +10 | +15 | +22 | +28 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alexandria | 2.5 | 1.3 | 0.7 | 0.2 | 0 | 0 | 0 | 0 | 0 | 0.5 | 1.3 | 2.1 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +1.9 | +1.7 | +1.9 | +3.4 | +4.4 | +5.3 | +8.5 | +11.4 | +8.8 | +9.2 | +8.2 | +3.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Alexandria | 2.5 | 1.3 | 0.7 | 0.2 | 0 | 0 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Difference | +1.9 | +1.7 | +1.9 | +3.4 | +4.4 | +5.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Alexandria | 0 | 0 | 0 | 0.5 | 1.3 | 2.1 |
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +8.5 | +11.4 | +8.8 | +9.2 | +8.2 | +3.8 |
Cloud cover (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alexandria | 58 | 55 | 48 | 42 | 31 | 13 | 9 | 11 | 18 | 34 | 48 | 58 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -19 | -16 | -6 | +7 | +21 | +46 | +41 | +35 | +32 | +17 | -2 | -18 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Alexandria | 58 | 55 | 48 | 42 | 31 | 13 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -19 | -16 | -6 | +7 | +21 | +46 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Alexandria | 9 | 11 | 18 | 34 | 48 | 58 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | +41 | +35 | +32 | +17 | -2 | -18 |
Relative humidity (%) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alexandria | 68 | 66 | 64 | 59 | 59 | 60 | 62 | 63 | 62 | 64 | 66 | 68 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +7 | +9 | +11 | +17 | +19 | +19 | +17 | +16 | +16 | +15 | +13 | +9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Alexandria | 68 | 66 | 64 | 59 | 59 | 60 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | +7 | +9 | +11 | +17 | +19 | +19 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Alexandria | 62 | 63 | 62 | 64 | 66 | 68 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +17 | +16 | +16 | +15 | +13 | +9 |
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. Alexandria trends → · Castries trends →
Methodology & sources
Alexandria
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Alexandria Intl, a weather station, about 4 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.
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.
← change Alexandria · change Castries → · Alexandria page · Castries page