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Calgary vs Castries
Comparing Calgary change · Castries change
Castries is the warmer of the two — about 23°C on the annual average; Castries is the wetter, with 1528 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Calgary and Castries, in everyday terms.
Summers
Castries has much hotter summers
Calgary: Mild
Castries: Warm
Winters
Castries has far milder winters
Calgary: Very cold
Castries: Stays warm
Rain & snow
Castries is much wetter
Calgary: Fairly dry
Castries: Very wet
Sky
Castries is sunnier
Calgary: Often cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 23°C on the annual average.
Precipitation
Castries is the wetter — about 1528 mm 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 (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Calgary | -2 | 1 | 4 | 11 | 16 | 19 | 23 | 23 | 18 | 11 | 4 | -0 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +28 | +26 | +23 | +17 | +12 | +9 | +5 | +6 | +11 | +17 | +24 | +28 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Calgary | -2 | 1 | 4 | 11 | 16 | 19 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +28 | +26 | +23 | +17 | +12 | +9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Calgary | 23 | 23 | 18 | 11 | 4 | -0 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +5 | +6 | +11 | +17 | +24 | +28 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Calgary | -14 | -11 | -8 | -2 | 3 | 7 | 10 | 9 | 4 | -1 | -8 | -12 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +39 | +37 | +33 | +28 | +24 | +20 | +17 | +19 | +23 | +29 | +35 | +39 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Calgary | -14 | -11 | -8 | -2 | 3 | 7 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +39 | +37 | +33 | +28 | +24 | +20 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Calgary | 10 | 9 | 4 | -1 | -8 | -12 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +17 | +19 | +23 | +29 | +35 | +39 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Calgary | 10 | 11 | 18 | 32 | 58 | 107 | 63 | 57 | 35 | 17 | 14 | 11 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +103 | +65 | +49 | +58 | +56 | +26 | +153 | +234 | +189 | +230 | +228 | +138 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Calgary | 10 | 11 | 18 | 32 | 58 | 107 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +103 | +65 | +49 | +58 | +56 | +26 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Calgary | 63 | 57 | 35 | 17 | 14 | 11 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +153 | +234 | +189 | +230 | +228 | +138 |
Snowfall (cm)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Calgary | 17 | 16 | 24 | 24 | 11 | 0 | 0 | 0 | 2 | 11 | 18 | 16 |
| Castries | — | — | — | — | — | — | — | — | — | — | — | — |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Calgary | 17 | 16 | 24 | 24 | 11 | 0 |
| Castries | — | — | — | — | — | — |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Calgary | 0 | 0 | 2 | 11 | 18 | 16 |
| Castries | — | — | — | — | — | — |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Calgary runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Calgary | 68 | 67 | 68 | 71 | 71 | 70 | 58 | 58 | 61 | 67 | 68 | 65 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -30 | -28 | -26 | -22 | -19 | -12 | -8 | -11 | -10 | -15 | -22 | -25 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Calgary | 68 | 67 | 68 | 71 | 71 | 70 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -30 | -28 | -26 | -22 | -19 | -12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Calgary | 58 | 58 | 61 | 67 | 68 | 65 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -8 | -11 | -10 | -15 | -22 | -25 |
Relative humidity (%) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Calgary | 85 | 79 | 70 | 63 | 61 | 64 | 62 | 61 | 64 | 70 | 77 | 82 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -9 | -4 | +5 | +13 | +16 | +14 | +17 | +18 | +15 | +10 | +2 | -5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Calgary | 85 | 79 | 70 | 63 | 61 | 64 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -9 | -4 | +5 | +13 | +16 | +14 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Calgary | 62 | 61 | 64 | 70 | 77 | 82 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +17 | +18 | +15 | +10 | +2 | -5 |
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. Calgary trends → · Castries trends →
Methodology & sources
Calgary
Temperature & precipitation — 1991–2020 normals computed from 21 years of daily observations at Calgary Int'l A, a weather station, about 8 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 Calgary · change Castries → · Calgary page · Castries page