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Banff vs Castries
Comparing Banff change · Castries change
Castries is the warmer of the two — about 25°C on the annual average; Castries is the wetter, with 1521 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Banff and Castries, in everyday terms.
Summers
Castries has much hotter summers
Banff: Mild
Castries: Warm
Winters
Castries has far milder winters
Banff: Very cold
Castries: Stays warm
Rain & snow
Castries is much wetter
Banff: Fairly dry
Castries: Very wet
Sky
Castries is sunnier
Banff: Often cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 25°C on the annual average.
Precipitation
Castries is the wetter — about 1521 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Banff | -4 | -1 | 3 | 9 | 14 | 18 | 23 | 22 | 17 | 9 | 1 | -5 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +30 | +27 | +24 | +19 | +14 | +10 | +6 | +7 | +12 | +20 | +27 | +32 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Banff | -4 | -1 | 3 | 9 | 14 | 18 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +30 | +27 | +24 | +19 | +14 | +10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Banff | 23 | 22 | 17 | 9 | 1 | -5 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +6 | +7 | +12 | +20 | +27 | +32 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Banff | -13 | -13 | -8 | -4 | 0 | 4 | 7 | 6 | 2 | -2 | -8 | -14 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +39 | +38 | +34 | +30 | +27 | +23 | +20 | +22 | +26 | +30 | +35 | +40 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Banff | -13 | -13 | -8 | -4 | 0 | 4 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +39 | +38 | +34 | +30 | +27 | +23 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Banff | 7 | 6 | 2 | -2 | -8 | -14 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +20 | +22 | +26 | +30 | +35 | +40 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Banff | 20 | 20 | 29 | 39 | 50 | 71 | 38 | 42 | 47 | 32 | 29 | 25 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +93 | +56 | +37 | +51 | +64 | +63 | +178 | +249 | +177 | +215 | +213 | +125 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Banff | 20 | 20 | 29 | 39 | 50 | 71 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +93 | +56 | +37 | +51 | +64 | +63 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Banff | 38 | 42 | 47 | 32 | 29 | 25 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +178 | +249 | +177 | +215 | +213 | +125 |
Cloud cover (%) Banff runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Banff | 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 |
|---|---|---|---|---|---|---|
| Banff | 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 |
|---|---|---|---|---|---|---|
| Banff | 58 | 58 | 61 | 67 | 68 | 65 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -8 | -11 | -10 | -15 | -22 | -25 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Banff | 96 | 96 | 95 | 89 | 76 | 75 | 72 | 71 | 74 | 83 | 94 | 96 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -20 | -22 | -20 | -13 | +1 | +4 | +7 | +8 | +4 | -4 | -15 | -19 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Banff | 96 | 96 | 95 | 89 | 76 | 75 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -20 | -22 | -20 | -13 | +1 | +4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Banff | 72 | 71 | 74 | 83 | 94 | 96 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +7 | +8 | +4 | -4 | -15 | -19 |
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. Banff trends → · Castries trends →
Methodology & sources
Banff
Temperature & precipitation — 1991–2020 normals computed from 26 years of daily observations at Banff CS, a weather station, about 2 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 Banff · change Castries → · Banff page · Castries page