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Castries vs Mexico City
Comparing Castries change · Mexico City change
Castries is the warmer of the two — about 17°F on the annual average; Castries is the wetter, with 50 in more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Castries and Mexico City, in everyday terms.
Summers
Summers are nearly the same
Castries: Warm
Mexico City: Warm
Winters
Castries has far milder winters
Castries: Stays warm
Mexico City: Cool
Rain & snow
Castries is much wetter
Castries: Very wet
Mexico City: Moderate rainfall
Sky
Castries is sunnier
Castries: Fairly sunny
Mexico City: Partly cloudy
Month-by-month charts
Temperature
Castries is the warmer of the two — about 17°F on the annual average.
Precipitation
Castries is the wetter — about 50 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Mexico City | 72 | 76 | 80 | 83 | 83 | 80 | 77 | 78 | 76 | 75 | 73 | 72 |
| Difference | -9 | -4 | -1 | +1 | — | -3 | -6 | -6 | -8 | -9 | -10 | -9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Mexico City | 72 | 76 | 80 | 83 | 83 | 80 |
| Difference | -9 | -4 | -1 | +1 | — | -3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Mexico City | 77 | 78 | 76 | 75 | 73 | 72 |
| Difference | -6 | -6 | -8 | -9 | -10 | -9 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Mexico City | 44 | 47 | 49 | 53 | 54 | 55 | 54 | 54 | 54 | 51 | 47 | 44 |
| Difference | -34 | -31 | -28 | -26 | -26 | -26 | -27 | -27 | -28 | -30 | -33 | -35 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Mexico City | 44 | 47 | 49 | 53 | 54 | 55 |
| Difference | -34 | -31 | -28 | -26 | -26 | -26 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Mexico City | 54 | 54 | 54 | 51 | 47 | 44 |
| Difference | -27 | -27 | -28 | -30 | -33 | -35 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Mexico City | 0.3 | 0.2 | 0.4 | 0.7 | 1.9 | 4.7 | 5.5 | 5.7 | 5.1 | 2.4 | 0.6 | 0.1 |
| Difference | -4.2 | -2.7 | -2.2 | -2.8 | -2.6 | -0.5 | -3 | -5.8 | -3.8 | -7.3 | -9 | -5.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Mexico City | 0.3 | 0.2 | 0.4 | 0.7 | 1.9 | 4.7 |
| Difference | -4.2 | -2.7 | -2.2 | -2.8 | -2.6 | -0.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Mexico City | 5.5 | 5.7 | 5.1 | 2.4 | 0.6 | 0.1 |
| Difference | -3 | -5.8 | -3.8 | -7.3 | -9 | -5.8 |
Cloud cover (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Mexico City | 39 | 35 | 36 | 46 | 55 | 71 | 75 | 74 | 76 | 59 | 42 | 37 |
| Difference | — | -4 | -5 | -3 | +3 | +12 | +25 | +28 | +25 | +7 | -4 | -4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Mexico City | 39 | 35 | 36 | 46 | 55 | 71 |
| Difference | — | -4 | -5 | -3 | +3 | +12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Mexico City | 75 | 74 | 76 | 59 | 42 | 37 |
| Difference | +25 | +28 | +25 | +7 | -4 | -4 |
Relative humidity (%) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Mexico City | 61 | 55 | 50 | 48 | 55 | 69 | 76 | 79 | 82 | 78 | 72 | 65 |
| Difference | -14 | -19 | -25 | -28 | -22 | -9 | -2 | — | +3 | -1 | -7 | -12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Mexico City | 61 | 55 | 50 | 48 | 55 | 69 |
| Difference | -14 | -19 | -25 | -28 | -22 | -9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Mexico City | 76 | 79 | 82 | 78 | 72 | 65 |
| Difference | -2 | — | +3 | -1 | -7 | -12 |
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. Castries trends → · Mexico City trends →
Methodology & sources
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.
Mexico City
Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at Playa Caleta 454 Colonia Marte, about 5 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.
← change Castries · change Mexico City → · Castries page · Mexico City page