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Santiago vs Castries
Comparing Santiago change · Castries change
Castries is the warmer of the two — about 11°C on the annual average; Castries is the wetter, with 1636 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Santiago and Castries, in everyday terms.
Summers
Summers are nearly the same
Santiago: Warm
Castries: Warm
Winters
Castries has far milder winters
Santiago: Chilly
Castries: Stays warm
Rain & snow
Castries is much wetter
Santiago: Fairly dry
Castries: Very wet
Sky
Castries is sunnier
Santiago: Partly cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 11°C on the annual average.
Precipitation
Castries is the wetter — about 1636 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) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Santiago | 30 | 29 | 28 | 23 | 19 | 16 | 15 | 17 | 20 | 23 | 26 | 29 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | -3 | -3 | -1 | +5 | +9 | +13 | +13 | +12 | +9 | +6 | +2 | -1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Santiago | 30 | 29 | 28 | 23 | 19 | 16 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | -3 | -3 | -1 | +5 | +9 | +13 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Santiago | 15 | 17 | 20 | 23 | 26 | 29 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +13 | +12 | +9 | +6 | +2 | -1 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Santiago | 14 | 13 | 12 | 9 | 7 | 5 | 4 | 5 | 7 | 8 | 10 | 13 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +12 | +12 | +14 | +17 | +20 | +23 | +24 | +23 | +21 | +19 | +17 | +14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Santiago | 14 | 13 | 12 | 9 | 7 | 5 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +12 | +12 | +14 | +17 | +20 | +23 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Santiago | 4 | 5 | 7 | 8 | 10 | 13 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +24 | +23 | +21 | +19 | +17 | +14 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Santiago | 0 | 2 | 4 | 19 | 45 | 88 | 54 | 54 | 30 | 16 | 7 | 6 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +113 | +74 | +62 | +70 | +69 | +46 | +162 | +237 | +194 | +231 | +236 | +143 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Santiago | 0 | 2 | 4 | 19 | 45 | 88 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +113 | +74 | +62 | +70 | +69 | +46 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Santiago | 54 | 54 | 30 | 16 | 7 | 6 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +162 | +237 | +194 | +231 | +236 | +143 |
Cloud cover (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Santiago | 33 | 31 | 36 | 53 | 68 | 73 | 70 | 69 | 68 | 62 | 48 | 38 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | +6 | +7 | +6 | -4 | -16 | -14 | -21 | -23 | -17 | -10 | -2 | +2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Santiago | 33 | 31 | 36 | 53 | 68 | 73 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | +6 | +7 | +6 | -4 | -16 | -14 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Santiago | 70 | 69 | 68 | 62 | 48 | 38 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -21 | -23 | -17 | -10 | -2 | +2 |
Relative humidity (%) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Santiago | 31 | 32 | 32 | 34 | 42 | 51 | 53 | 51 | 50 | 44 | 35 | 31 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +45 | +42 | +43 | +42 | +36 | +27 | +26 | +27 | +28 | +36 | +45 | +46 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Santiago | 31 | 32 | 32 | 34 | 42 | 51 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | +45 | +42 | +43 | +42 | +36 | +27 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Santiago | 53 | 51 | 50 | 44 | 35 | 31 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +26 | +27 | +28 | +36 | +45 | +46 |
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. Santiago trends → · Castries trends →
Methodology & sources
Santiago
Temperature & precipitation — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at Eulogiosancheztobalabaad, about 9 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 Santiago · change Castries → · Santiago page · Castries page