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Castries vs Aspen
Comparing Castries change · Aspen change
Castries is the warmer of the two — about 22°C on the annual average; Castries is the wetter, with 1342 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Castries and Aspen, in everyday terms.
Summers
Castries has hotter summers
Castries: Warm
Aspen: Warm
Winters
Castries has far milder winters
Castries: Stays warm
Aspen: Very cold
Rain & snow
Castries is much wetter
Castries: Very wet
Aspen: Moderate rainfall
Sky
Castries is sunnier
Castries: Fairly sunny
Aspen: Partly cloudy
Month-by-month charts
Temperature
Castries is the warmer of the two — about 22°C on the annual average.
Precipitation
Castries is the wetter — about 1342 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Aspen | 1 | 3 | 7 | 11 | 17 | 23 | 26 | 24 | 21 | 14 | 7 | 1 |
| Difference | -25 | -23 | -20 | -16 | -11 | -6 | -3 | -5 | -8 | -14 | -21 | -26 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Aspen | 1 | 3 | 7 | 11 | 17 | 23 |
| Difference | -25 | -23 | -20 | -16 | -11 | -6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Aspen | 26 | 24 | 21 | 14 | 7 | 1 |
| Difference | -3 | -5 | -8 | -14 | -21 | -26 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Aspen | -12 | -11 | -7 | -3 | 1 | 6 | 9 | 8 | 4 | -1 | -7 | -12 |
| Difference | -38 | -36 | -32 | -29 | -25 | -22 | -19 | -19 | -23 | -29 | -34 | -39 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Aspen | -12 | -11 | -7 | -3 | 1 | 6 |
| Difference | -38 | -36 | -32 | -29 | -25 | -22 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Aspen | 9 | 8 | 4 | -1 | -7 | -12 |
| Difference | -19 | -19 | -23 | -29 | -34 | -39 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Aspen | 53 | 57 | 63 | 69 | 55 | 28 | 50 | 44 | 48 | 49 | 53 | 51 |
| Difference | -60 | -19 | -3 | -21 | -59 | -106 | -166 | -247 | -176 | -197 | -190 | -98 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Aspen | 53 | 57 | 63 | 69 | 55 | 28 |
| Difference | -60 | -19 | -3 | -21 | -59 | -106 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Aspen | 50 | 44 | 48 | 49 | 53 | 51 |
| Difference | -166 | -247 | -176 | -197 | -190 | -98 |
Snowfall (cm)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | — | — | — | — | — | — | — | — | — | — | — | — |
| Aspen | 71 | 73 | 68 | 54 | 17 | 1 | 0 | 0 | 3 | 25 | 61 | 67 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | — | — | — | — | — | — |
| Aspen | 71 | 73 | 68 | 54 | 17 | 1 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | — | — | — | — | — | — |
| Aspen | 0 | 0 | 3 | 25 | 61 | 67 |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Aspen runs higher most of 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 |
| Aspen | 58 | 64 | 64 | 69 | 66 | 50 | 55 | 58 | 48 | 51 | 55 | 59 |
| Difference | +19 | +25 | +23 | +20 | +14 | -9 | +5 | +12 | -3 | -1 | +8 | +18 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Aspen | 58 | 64 | 64 | 69 | 66 | 50 |
| Difference | +19 | +25 | +23 | +20 | +14 | -9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Aspen | 55 | 58 | 48 | 51 | 55 | 59 |
| Difference | +5 | +12 | -3 | -1 | +8 | +18 |
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 |
| Aspen | 91 | 94 | 89 | 76 | 64 | 52 | 56 | 59 | 57 | 63 | 77 | 89 |
| Difference | +16 | +19 | +15 | — | -13 | -27 | -23 | -20 | -22 | -17 | -2 | +12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Aspen | 91 | 94 | 89 | 76 | 64 | 52 |
| Difference | +16 | +19 | +15 | — | -13 | -27 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Aspen | 56 | 59 | 57 | 63 | 77 | 89 |
| Difference | -23 | -20 | -22 | -17 | -2 | +12 |
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 → · Aspen trends →
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.
Aspen
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Aspen 1sw, 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.
← change Castries · change Aspen → · Castries page · Aspen page