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Buenos Aires vs Castries
Comparing Buenos Aires change · Castries change
Castries is the warmer of the two — about 16°F on the annual average; Castries is the wetter, with 35 in more rain a year.
How the seasons compare
The differences between Buenos Aires and Castries, in everyday terms.
Summers
Summers are nearly the same
Buenos Aires: Warm
Castries: Warm
Winters
Castries has far milder winters
Buenos Aires: Cool
Castries: Stays warm
Rain & snow
Castries is wetter
Buenos Aires: Wet
Castries: Very wet
Sky
Similar amounts of sun
Buenos Aires: Partly cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 16°F on the annual average.
Precipitation
Castries is the wetter — about 35 in more across the year.
Clear skies
The two cities see a similar amount of sun.
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires | 84 | 82 | 79 | 73 | 66 | 61 | 59 | 63 | 66 | 71 | 77 | 83 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | -4 | -2 | +2 | +9 | +16 | +22 | +24 | +21 | +18 | +12 | +5 | -1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Buenos Aires | 84 | 82 | 79 | 73 | 66 | 61 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Difference | -4 | -2 | +2 | +9 | +16 | +22 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Buenos Aires | 59 | 63 | 66 | 71 | 77 | 83 |
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +24 | +21 | +18 | +12 | +5 | -1 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires | 69 | 68 | 66 | 59 | 54 | 48 | 47 | 49 | 52 | 57 | 62 | 66 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +9 | +9 | +12 | +20 | +26 | +33 | +35 | +33 | +30 | +24 | +19 | +13 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Buenos Aires | 69 | 68 | 66 | 59 | 54 | 48 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Difference | +9 | +9 | +12 | +20 | +26 | +33 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Buenos Aires | 47 | 49 | 52 | 57 | 62 | 66 |
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +35 | +33 | +30 | +24 | +19 | +13 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires | 4.1 | 4.4 | 4.1 | 4.2 | 3.3 | 2.1 | 2.4 | 2.5 | 2.7 | 4.9 | 3.7 | 3.7 |
| 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 | +0.3 | -1.4 | -1.4 | -0.6 | +1.2 | +3.2 | +6.1 | +9 | +6.1 | +4.8 | +5.8 | +2.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Buenos Aires | 4.1 | 4.4 | 4.1 | 4.2 | 3.3 | 2.1 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Difference | +0.3 | -1.4 | -1.4 | -0.6 | +1.2 | +3.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Buenos Aires | 2.4 | 2.5 | 2.7 | 4.9 | 3.7 | 3.7 |
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +6.1 | +9 | +6.1 | +4.8 | +5.8 | +2.1 |
Cloud cover (%) Buenos Aires runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires | 47 | 47 | 46 | 51 | 56 | 58 | 59 | 54 | 55 | 55 | 50 | 46 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -8 | -8 | -4 | -2 | -4 | +1 | -9 | -8 | -4 | -4 | -3 | -6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Buenos Aires | 47 | 47 | 46 | 51 | 56 | 58 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -8 | -8 | -4 | -2 | -4 | +1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Buenos Aires | 59 | 54 | 55 | 55 | 50 | 46 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -9 | -8 | -4 | -4 | -3 | -6 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires | 69 | 71 | 74 | 76 | 80 | 81 | 82 | 80 | 78 | 76 | 72 | 69 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +7 | +3 | +1 | — | -2 | -3 | -3 | -1 | +1 | +3 | +7 | +8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Buenos Aires | 69 | 71 | 74 | 76 | 80 | 81 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | +7 | +3 | +1 | — | -2 | -3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Buenos Aires | 82 | 80 | 78 | 76 | 72 | 69 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -3 | -1 | +1 | +3 | +7 | +8 |
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. Buenos Aires trends → · Castries trends →
Methodology & sources
Buenos Aires
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Aeroparque Jorge Newbery, a weather station, about 7 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 Buenos Aires · change Castries → · Buenos Aires page · Castries page