Home › Compare › Castries vs Las Vegas
Castries vs Las Vegas
Comparing Castries change · Las Vegas change
Castries is the warmer of the two — about 6°C on the annual average; Castries is the wetter, with 1856 mm more rain a year, and Las Vegas the sunnier.
How the seasons compare
The differences between Castries and Las Vegas, in everyday terms.
Summers
Las Vegas has far hotter summers
Castries: Warm
Las Vegas: Very hot
Winters
Castries has far milder winters
Castries: Stays warm
Las Vegas: Chilly
Rain & snow
Castries is much wetter
Castries: Very wet
Las Vegas: Very dry
Sky
Las Vegas is sunnier
Castries: Fairly sunny
Las Vegas: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 6°C on the annual average.
Precipitation
Castries is the wetter — about 1856 mm more across the year.
Clear skies
Las Vegas 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Las Vegas | 15 | 17 | 22 | 26 | 31 | 37 | 40 | 39 | 35 | 27 | 20 | 14 |
| Difference | -12 | -9 | -5 | -2 | +3 | +9 | +12 | +11 | +6 | -1 | -9 | -14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Las Vegas | 15 | 17 | 22 | 26 | 31 | 37 |
| Difference | -12 | -9 | -5 | -2 | +3 | +9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Las Vegas | 40 | 39 | 35 | 27 | 20 | 14 |
| Difference | +12 | +11 | +6 | -1 | -9 | -14 |
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 |
| Las Vegas | 5 | 7 | 10 | 14 | 19 | 24 | 28 | 27 | 22 | 15 | 9 | 4 |
| Difference | -21 | -19 | -15 | -12 | -8 | -3 | +1 | -1 | -5 | -12 | -19 | -22 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Las Vegas | 5 | 7 | 10 | 14 | 19 | 24 |
| Difference | -21 | -19 | -15 | -12 | -8 | -3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Las Vegas | 28 | 27 | 22 | 15 | 9 | 4 |
| Difference | +1 | -1 | -5 | -12 | -19 | -22 |
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 |
| Las Vegas | 14 | 20 | 11 | 5 | 2 | 1 | 10 | 8 | 8 | 8 | 8 | 11 |
| Difference | -99 | -55 | -56 | -85 | -112 | -133 | -207 | -283 | -216 | -238 | -235 | -138 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Las Vegas | 14 | 20 | 11 | 5 | 2 | 1 |
| Difference | -99 | -55 | -56 | -85 | -112 | -133 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Las Vegas | 10 | 8 | 8 | 8 | 8 | 11 |
| Difference | -207 | -283 | -216 | -238 | -235 | -138 |
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 |
| Las Vegas | 48 | 49 | 46 | 41 | 38 | 27 | 36 | 33 | 25 | 31 | 38 | 47 |
| Difference | +10 | +10 | +4 | -8 | -14 | -32 | -14 | -13 | -26 | -20 | -8 | +6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Las Vegas | 48 | 49 | 46 | 41 | 38 | 27 |
| Difference | +10 | +10 | +4 | -8 | -14 | -32 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Las Vegas | 36 | 33 | 25 | 31 | 38 | 47 |
| Difference | -14 | -13 | -26 | -20 | -8 | +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 |
| Las Vegas | 48 | 45 | 39 | 30 | 24 | 16 | 21 | 24 | 24 | 28 | 36 | 45 |
| Difference | -28 | -30 | -36 | -46 | -54 | -63 | -57 | -55 | -54 | -52 | -43 | -31 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Las Vegas | 48 | 45 | 39 | 30 | 24 | 16 |
| Difference | -28 | -30 | -36 | -46 | -54 | -63 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Las Vegas | 21 | 24 | 24 | 28 | 36 | 45 |
| Difference | -57 | -55 | -54 | -52 | -43 | -31 |
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 → · Las Vegas trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
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.
Las Vegas
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Mccarran Intl AP (NOAA GHCN station USW00023169), about 12 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 Las Vegas → · Castries page · Las Vegas page