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Castries vs Austin
Comparing Castries change · Austin change
Castries is the warmer of the two — about 7°C on the annual average; Castries is the wetter, with 1034 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Castries and Austin, in everyday terms.
Summers
Austin has much hotter summers
Castries: Warm
Austin: Very hot
Winters
Castries has far milder winters
Castries: Stays warm
Austin: Chilly
Rain & snow
Castries is wetter
Castries: Very wet
Austin: Moderate rainfall
Sky
Castries is sunnier
Castries: Fairly sunny
Austin: Partly cloudy
Month-by-month charts
Temperature
Castries is the warmer of the two — about 7°C on the annual average.
Precipitation
Castries is the wetter — about 1034 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Austin | 17 | 19 | 23 | 27 | 30 | 34 | 35 | 36 | 33 | 28 | 22 | 18 |
| Difference | -10 | -7 | -4 | -1 | +2 | +5 | +7 | +7 | +4 | -1 | -6 | -10 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Austin | 17 | 19 | 23 | 27 | 30 | 34 |
| Difference | -10 | -7 | -4 | -1 | +2 | +5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Austin | 35 | 36 | 33 | 28 | 22 | 18 |
| Difference | +7 | +7 | +4 | -1 | -6 | -10 |
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 |
| Austin | 4 | 6 | 10 | 14 | 18 | 22 | 23 | 23 | 20 | 15 | 9 | 5 |
| Difference | -22 | -19 | -16 | -13 | -9 | -5 | -4 | -4 | -8 | -13 | -18 | -21 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Austin | 4 | 6 | 10 | 14 | 18 | 22 |
| Difference | -22 | -19 | -16 | -13 | -9 | -5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Austin | 23 | 23 | 20 | 15 | 9 | 5 |
| Difference | -4 | -4 | -8 | -13 | -18 | -21 |
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 |
| Austin | 61 | 44 | 70 | 81 | 115 | 91 | 56 | 66 | 102 | 112 | 68 | 61 |
| Difference | -52 | -32 | +4 | -8 | +1 | -43 | -160 | -225 | -122 | -134 | -174 | -88 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Austin | 61 | 44 | 70 | 81 | 115 | 91 |
| Difference | -52 | -32 | +4 | -8 | +1 | -43 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Austin | 56 | 66 | 102 | 112 | 68 | 61 |
| Difference | -160 | -225 | -122 | -134 | -174 | -88 |
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 |
| Austin | 60 | 63 | 63 | 60 | 59 | 48 | 43 | 43 | 47 | 43 | 53 | 60 |
| Difference | +21 | +24 | +21 | +10 | +7 | -11 | -7 | -3 | -4 | -8 | +7 | +20 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Austin | 60 | 63 | 63 | 60 | 59 | 48 |
| Difference | +21 | +24 | +21 | +10 | +7 | -11 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Austin | 43 | 43 | 47 | 43 | 53 | 60 |
| Difference | -7 | -3 | -4 | -8 | +7 | +20 |
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 |
| Austin | 72 | 72 | 71 | 68 | 70 | 68 | 63 | 61 | 67 | 68 | 71 | 72 |
| Difference | -3 | -2 | -3 | -8 | -7 | -11 | -15 | -18 | -12 | -11 | -8 | -5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Austin | 72 | 72 | 71 | 68 | 70 | 68 |
| Difference | -3 | -2 | -3 | -8 | -7 | -11 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Austin | 63 | 61 | 67 | 68 | 71 | 72 |
| Difference | -15 | -18 | -12 | -11 | -8 | -5 |
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 → · Austin 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.
Austin
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at San Marcos (NOAA GHCN station USC00417983), about 47 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 Austin → · Castries page · Austin page