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Castries vs Monterrey
Comparing Castries change · Monterrey change
Castries is the warmer of the two — about 4°C on the annual average; Castries is the wetter, with 1287 mm more rain a year.
How the seasons compare
The differences between Castries and Monterrey, in everyday terms.
Summers
Monterrey has much hotter summers
Castries: Warm
Monterrey: Very hot
Winters
Castries has far milder winters
Castries: Stays warm
Monterrey: Cool
Rain & snow
Castries is much wetter
Castries: Very wet
Monterrey: Moderate rainfall
Sky
Similar amounts of sun
Castries: Fairly sunny
Monterrey: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 4°C on the annual average.
Precipitation
Castries is the wetter — about 1287 mm 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 (°C) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Monterrey | 22 | 25 | 28 | 31 | 34 | 36 | 36 | 36 | 32 | 29 | 25 | 22 |
| Difference | -4 | -2 | +1 | +4 | +5 | +7 | +7 | +8 | +4 | — | -4 | -5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Monterrey | 22 | 25 | 28 | 31 | 34 | 36 |
| Difference | -4 | -2 | +1 | +4 | +5 | +7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Monterrey | 36 | 36 | 32 | 29 | 25 | 22 |
| Difference | +7 | +8 | +4 | — | -4 | -5 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Monterrey | 10 | 12 | 15 | 18 | 21 | 23 | 23 | 24 | 22 | 18 | 14 | 10 |
| Difference | -16 | -13 | -10 | -8 | -6 | -4 | -4 | -4 | -6 | -9 | -13 | -16 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Monterrey | 10 | 12 | 15 | 18 | 21 | 23 |
| Difference | -16 | -13 | -10 | -8 | -6 | -4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Monterrey | 23 | 24 | 22 | 18 | 14 | 10 |
| Difference | -4 | -4 | -6 | -9 | -13 | -16 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Monterrey | 20 | 16 | 27 | 35 | 58 | 60 | 74 | 69 | 198 | 62 | 36 | 21 |
| Difference | -94 | -60 | -39 | -55 | -56 | -74 | -142 | -222 | -26 | -184 | -207 | -128 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Monterrey | 20 | 16 | 27 | 35 | 58 | 60 |
| Difference | -94 | -60 | -39 | -55 | -56 | -74 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Monterrey | 74 | 69 | 198 | 62 | 36 | 21 |
| Difference | -142 | -222 | -26 | -184 | -207 | -128 |
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 |
| Monterrey | 49 | 47 | 47 | 49 | 49 | 47 | 49 | 46 | 53 | 41 | 40 | 47 |
| Difference | +10 | +8 | +5 | — | -3 | -11 | -1 | -1 | +2 | -11 | -6 | +6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Monterrey | 49 | 47 | 47 | 49 | 49 | 47 |
| Difference | +10 | +8 | +5 | — | -3 | -11 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Monterrey | 49 | 46 | 53 | 41 | 40 | 47 |
| Difference | -1 | -1 | +2 | -11 | -6 | +6 |
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 |
| Monterrey | 57 | 54 | 51 | 48 | 54 | 57 | 58 | 59 | 69 | 67 | 63 | 59 |
| Difference | -19 | -21 | -24 | -28 | -23 | -21 | -21 | -20 | -9 | -12 | -16 | -18 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Monterrey | 57 | 54 | 51 | 48 | 54 | 57 |
| Difference | -19 | -21 | -24 | -28 | -23 | -21 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Monterrey | 58 | 59 | 69 | 67 | 63 | 59 |
| Difference | -21 | -20 | -9 | -12 | -16 | -18 |
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 → · Monterrey 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.
Monterrey
Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at Monterrey (obs), about 6 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 Monterrey → · Castries page · Monterrey page