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Bormio vs Castries
Comparing Bormio change · Castries change
Castries is the warmer of the two — about 21°C on the annual average; Castries is the wetter, with 1506 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Bormio and Castries, in everyday terms.
Summers
Castries has far hotter summers
Bormio: Mild
Castries: Warm
Winters
Castries has far milder winters
Bormio: Very cold
Castries: Stays warm
Rain & snow
Castries is much wetter
Bormio: Fairly dry
Castries: Very wet
Sky
Castries is sunnier
Bormio: Often cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 21°C on the annual average.
Precipitation
Castries is the wetter — about 1506 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bormio | 2 | 3 | 7 | 11 | 14 | 19 | 20 | 20 | 16 | 12 | 6 | 2 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +25 | +24 | +20 | +17 | +14 | +10 | +8 | +8 | +13 | +17 | +22 | +25 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bormio | 2 | 3 | 7 | 11 | 14 | 19 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +25 | +24 | +20 | +17 | +14 | +10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bormio | 20 | 20 | 16 | 12 | 6 | 2 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +8 | +8 | +13 | +17 | +22 | +25 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bormio | -7 | -6 | -3 | 1 | 5 | 9 | 10 | 10 | 7 | 3 | -1 | -5 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +32 | +32 | +28 | +25 | +22 | +19 | +17 | +17 | +21 | +24 | +28 | +31 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bormio | -7 | -6 | -3 | 1 | 5 | 9 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +32 | +32 | +28 | +25 | +22 | +19 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bormio | 10 | 10 | 7 | 3 | -1 | -5 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +17 | +17 | +21 | +24 | +28 | +31 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bormio | 20 | 15 | 19 | 20 | 32 | 54 | 72 | 74 | 50 | 45 | 34 | 22 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +94 | +61 | +48 | +69 | +81 | +79 | +144 | +218 | +174 | +202 | +209 | +127 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bormio | 20 | 15 | 19 | 20 | 32 | 54 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +94 | +61 | +48 | +69 | +81 | +79 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bormio | 72 | 74 | 50 | 45 | 34 | 22 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +144 | +218 | +174 | +202 | +209 | +127 |
Cloud cover (%) Bormio runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bormio | 62 | 65 | 68 | 72 | 74 | 70 | 64 | 63 | 64 | 64 | 66 | 64 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -23 | -26 | -26 | -23 | -21 | -12 | -14 | -17 | -13 | -12 | -20 | -24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bormio | 62 | 65 | 68 | 72 | 74 | 70 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -23 | -26 | -26 | -23 | -21 | -12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bormio | 64 | 63 | 64 | 64 | 66 | 64 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -14 | -17 | -13 | -12 | -20 | -24 |
Relative humidity (%) Bormio runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bormio | 88 | 90 | 90 | 83 | 79 | 79 | 79 | 81 | 83 | 84 | 88 | 88 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -12 | -15 | -15 | -7 | -2 | — | — | -2 | -4 | -5 | -9 | -11 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bormio | 88 | 90 | 90 | 83 | 79 | 79 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -12 | -15 | -15 | -7 | -2 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bormio | 79 | 81 | 83 | 84 | 88 | 88 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | — | -2 | -4 | -5 | -9 | -11 |
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. Bormio trends → · Castries trends →
Methodology & sources
Bormio
Temperature & precipitation — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at San_valentino_alla_muta, about 38 km from the city centre.
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 Bormio · change Castries → · Bormio page · Castries page