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Chengdu vs Castries
Comparing Chengdu change · Castries change
Castries is the warmer of the two — about 18°F on the annual average; Castries is the wetter, with 46 in more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Chengdu and Castries, in everyday terms.
Summers
Summers are nearly the same
Chengdu: Warm
Castries: Warm
Winters
Castries has far milder winters
Chengdu: Chilly
Castries: Stays warm
Rain & snow
Castries is much wetter
Chengdu: Moderate rainfall
Castries: Very wet
Sky
Castries is far sunnier
Chengdu: Often grey
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 18°F on the annual average.
Precipitation
Castries is the wetter — about 46 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chengdu | 49 | 54 | 61 | 72 | 80 | 83 | 86 | 85 | 79 | 69 | 61 | 51 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +31 | +26 | +19 | +10 | +3 | — | -3 | -2 | +5 | +14 | +21 | +30 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Chengdu | 49 | 54 | 61 | 72 | 80 | 83 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Difference | +31 | +26 | +19 | +10 | +3 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Chengdu | 86 | 85 | 79 | 69 | 61 | 51 |
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | -3 | -2 | +5 | +14 | +21 | +30 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chengdu | 38 | 43 | 48 | 57 | 64 | 70 | 73 | 71 | 66 | 59 | 50 | 41 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +40 | +35 | +30 | +22 | +17 | +11 | +9 | +10 | +16 | +23 | +31 | +38 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Chengdu | 38 | 43 | 48 | 57 | 64 | 70 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Difference | +40 | +35 | +30 | +22 | +17 | +11 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Chengdu | 73 | 71 | 66 | 59 | 50 | 41 |
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +9 | +10 | +16 | +23 | +31 | +38 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chengdu | 0.3 | 0.5 | 0.7 | 1.7 | 2.4 | 4.5 | 7 | 8.3 | 3.7 | 1.4 | 0.6 | 0.2 |
| 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 | +2.5 | +1.9 | +1.8 | +2.1 | +0.8 | +1.5 | +3.2 | +5.1 | +8.3 | +9 | +5.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Chengdu | 0.3 | 0.5 | 0.7 | 1.7 | 2.4 | 4.5 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Difference | +4.2 | +2.5 | +1.9 | +1.8 | +2.1 | +0.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Chengdu | 7 | 8.3 | 3.7 | 1.4 | 0.6 | 0.2 |
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +1.5 | +3.2 | +5.1 | +8.3 | +9 | +5.7 |
Cloud cover (%) Chengdu runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chengdu | 78 | 82 | 84 | 82 | 84 | 85 | 81 | 77 | 85 | 87 | 78 | 77 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -40 | -44 | -42 | -33 | -32 | -26 | -31 | -31 | -34 | -35 | -32 | -36 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Chengdu | 78 | 82 | 84 | 82 | 84 | 85 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -40 | -44 | -42 | -33 | -32 | -26 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Chengdu | 81 | 77 | 85 | 87 | 78 | 77 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -31 | -31 | -34 | -35 | -32 | -36 |
Relative humidity (%) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chengdu | 75 | 73 | 68 | 65 | 64 | 68 | 75 | 79 | 80 | 80 | 77 | 76 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | — | +2 | +7 | +11 | +14 | +10 | +4 | — | -2 | -1 | +2 | +1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Chengdu | 75 | 73 | 68 | 65 | 64 | 68 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | — | +2 | +7 | +11 | +14 | +10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Chengdu | 75 | 79 | 80 | 80 | 77 | 76 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +4 | — | -2 | -1 | +2 | +1 |
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. Chengdu trends → · Castries trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
Methodology & sources
Chengdu
Temperature & precipitation — 1991–2020 normals computed from 13 years of daily observations at Chengdu, 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.
← change Chengdu · change Castries → · Chengdu page · Castries page