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Lake Louise vs Castries
Comparing Lake Louise change · Castries change
Castries is the warmer of the two — about 44°F on the annual average; Castries is the wetter, with 60 in more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Lake Louise and Castries, in everyday terms.
Summers
Castries has much hotter summers
Lake Louise: Mild
Castries: Warm
Winters
Castries has far milder winters
Lake Louise: Very cold
Castries: Stays warm
Rain & snow
Castries is much wetter
Lake Louise: Fairly dry
Castries: Very wet
Sky
Castries is sunnier
Lake Louise: Often cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 44°F on the annual average.
Precipitation
Castries is the wetter — about 60 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Louise | 26 | 31 | 38 | 48 | 57 | 64 | 73 | 72 | 62 | 48 | 33 | 24 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +55 | +49 | +43 | +34 | +25 | +19 | +10 | +12 | +22 | +35 | +49 | +58 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Lake Louise | 26 | 31 | 38 | 48 | 57 | 64 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Difference | +55 | +49 | +43 | +34 | +25 | +19 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Lake Louise | 73 | 72 | 62 | 48 | 33 | 24 |
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +10 | +12 | +22 | +35 | +49 | +58 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Louise | 8 | 9 | 17 | 25 | 32 | 40 | 44 | 42 | 36 | 28 | 18 | 8 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +70 | +69 | +61 | +54 | +48 | +41 | +37 | +40 | +46 | +54 | +63 | +72 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Lake Louise | 8 | 9 | 17 | 25 | 32 | 40 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Difference | +70 | +69 | +61 | +54 | +48 | +41 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Lake Louise | 44 | 42 | 36 | 28 | 18 | 8 |
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +37 | +40 | +46 | +54 | +63 | +72 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Louise | 0.8 | 0.8 | 1.2 | 1.5 | 2 | 2.8 | 1.5 | 1.7 | 1.8 | 1.3 | 1.2 | 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 | +3.7 | +2.2 | +1.5 | +2 | +2.5 | +2.5 | +7 | +9.8 | +7 | +8.4 | +8.4 | +4.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Lake Louise | 0.8 | 0.8 | 1.2 | 1.5 | 2 | 2.8 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Difference | +3.7 | +2.2 | +1.5 | +2 | +2.5 | +2.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Lake Louise | 1.5 | 1.7 | 1.8 | 1.3 | 1.2 | 1 |
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +7 | +9.8 | +7 | +8.4 | +8.4 | +4.9 |
Cloud cover (%) Lake Louise runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Louise | 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 |
|---|---|---|---|---|---|---|
| Lake Louise | 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 |
|---|---|---|---|---|---|---|
| Lake Louise | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Louise | 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 |
|---|---|---|---|---|---|---|
| Lake Louise | 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 |
|---|---|---|---|---|---|---|
| Lake Louise | 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. Lake Louise trends → · Castries trends →
Methodology & sources
Lake Louise
Temperature & precipitation — 1991–2020 normals computed from 26 years of daily observations at Banff CS, a weather station, about 51 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 Lake Louise · change Castries → · Lake Louise page · Castries page