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Xi’an vs Castries
Comparing Xi’an change · Castries change
Castries is the warmer of the two — about 22°F on the annual average; Castries is the wetter, with 56 in more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Xi’an and Castries, in everyday terms.
Summers
Xi’an has much hotter summers
Xi’an: Hot
Castries: Warm
Winters
Castries has far milder winters
Xi’an: Cold
Castries: Stays warm
Rain & snow
Castries is much wetter
Xi’an: Fairly dry
Castries: Very wet
Sky
Castries is sunnier
Xi’an: Often cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 22°F on the annual average.
Precipitation
Castries is the wetter — about 56 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Xi’an | 41 | 50 | 60 | 72 | 81 | 89 | 91 | 87 | 78 | 67 | 55 | 44 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +39 | +30 | +21 | +10 | +1 | -6 | -8 | -3 | +6 | +17 | +27 | +37 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Xi’an | 41 | 50 | 60 | 72 | 81 | 89 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Difference | +39 | +30 | +21 | +10 | +1 | -6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Xi’an | 91 | 87 | 78 | 67 | 55 | 44 |
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | -8 | -3 | +6 | +17 | +27 | +37 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Xi’an | 26 | 32 | 41 | 51 | 60 | 68 | 73 | 70 | 62 | 51 | 38 | 29 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +52 | +45 | +37 | +28 | +20 | +12 | +8 | +11 | +20 | +31 | +42 | +51 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Xi’an | 26 | 32 | 41 | 51 | 60 | 68 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Difference | +52 | +45 | +37 | +28 | +20 | +12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Xi’an | 73 | 70 | 62 | 51 | 38 | 29 |
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +8 | +11 | +20 | +31 | +42 | +51 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Xi’an | 0.3 | 0.3 | 1.1 | 1.4 | 2 | 2.5 | 3.8 | 3.3 | 3.1 | 2.5 | 0.8 | 0.3 |
| 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 | +4.2 | +2.7 | +1.5 | +2.1 | +2.5 | +2.8 | +4.7 | +8.2 | +5.7 | +7.2 | +8.7 | +5.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Xi’an | 0.3 | 0.3 | 1.1 | 1.4 | 2 | 2.5 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Difference | +4.2 | +2.7 | +1.5 | +2.1 | +2.5 | +2.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Xi’an | 3.8 | 3.3 | 3.1 | 2.5 | 0.8 | 0.3 |
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +4.7 | +8.2 | +5.7 | +7.2 | +8.7 | +5.6 |
Cloud cover (%) Xi’an runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Xi’an | 56 | 64 | 69 | 69 | 72 | 71 | 67 | 65 | 69 | 64 | 52 | 50 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -17 | -25 | -27 | -20 | -19 | -12 | -18 | -19 | -18 | -13 | -6 | -9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Xi’an | 56 | 64 | 69 | 69 | 72 | 71 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -17 | -25 | -27 | -20 | -19 | -12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Xi’an | 67 | 65 | 69 | 64 | 52 | 50 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -18 | -19 | -18 | -13 | -6 | -9 |
Relative humidity (%) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Xi’an | 59 | 58 | 54 | 50 | 49 | 51 | 59 | 61 | 65 | 64 | 63 | 59 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +16 | +17 | +21 | +26 | +28 | +27 | +19 | +18 | +14 | +15 | +16 | +17 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Xi’an | 59 | 58 | 54 | 50 | 49 | 51 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | +16 | +17 | +21 | +26 | +28 | +27 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Xi’an | 59 | 61 | 65 | 64 | 63 | 59 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +19 | +18 | +14 | +15 | +16 | +17 |
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. Xi’an trends → · Castries trends →
Xi’an is projected to shift from BSk to Cwa by the 2071–2099 window (SSP2-4.5).
Methodology & sources
Xi’an
Temperature & precipitation — 1991–2020 normals computed from 18 years of daily observations at Xian, a weather station, about 5 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.
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