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Castries vs Houston
Comparing Castries change · Houston change
Castries is the warmer of the two — about 11°F on the annual average; Castries is the wetter, with 17 in more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Castries and Houston, in everyday terms.
Summers
Houston has much hotter summers
Castries: Warm
Houston: Hot
Winters
Castries has far milder winters
Castries: Stays warm
Houston: Cool
Rain & snow
Castries is wetter
Castries: Very wet
Houston: Very wet
Sky
Castries is sunnier
Castries: Fairly sunny
Houston: Partly cloudy
Month-by-month charts
Temperature
Castries is the warmer of the two — about 11°F on the annual average.
Precipitation
Castries is the wetter — about 17 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) Varies through 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 |
| Houston | 64 | 67 | 73 | 78 | 85 | 90 | 92 | 92 | 88 | 82 | 73 | 66 |
| Difference | -16 | -13 | -7 | -3 | +2 | +7 | +9 | +9 | +4 | -2 | -10 | -15 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Houston | 64 | 67 | 73 | 78 | 85 | 90 |
| Difference | -16 | -13 | -7 | -3 | +2 | +7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Houston | 92 | 92 | 88 | 82 | 73 | 66 |
| Difference | +9 | +9 | +4 | -2 | -10 | -15 |
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 |
| Houston | 46 | 50 | 56 | 61 | 69 | 75 | 76 | 76 | 72 | 63 | 53 | 47 |
| Difference | -32 | -28 | -22 | -18 | -11 | -6 | -5 | -6 | -10 | -19 | -27 | -32 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Houston | 46 | 50 | 56 | 61 | 69 | 75 |
| Difference | -32 | -28 | -22 | -18 | -11 | -6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Houston | 76 | 76 | 72 | 63 | 53 | 47 |
| Difference | -5 | -6 | -10 | -19 | -27 | -32 |
Precipitation (in) Varies through 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 |
| Houston | 4.8 | 3 | 3.3 | 4.2 | 5.1 | 6.5 | 4.4 | 6.6 | 7.3 | 5.8 | 4.5 | 4.5 |
| Difference | +0.3 | — | +0.7 | +0.7 | +0.6 | +1.3 | -4.2 | -4.8 | -1.5 | -3.9 | -5 | -1.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Houston | 4.8 | 3 | 3.3 | 4.2 | 5.1 | 6.5 |
| Difference | +0.3 | — | +0.7 | +0.7 | +0.6 | +1.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Houston | 4.4 | 6.6 | 7.3 | 5.8 | 4.5 | 4.5 |
| Difference | -4.2 | -4.8 | -1.5 | -3.9 | -5 | -1.4 |
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 |
| Houston | 62 | 65 | 62 | 58 | 56 | 49 | 47 | 47 | 46 | 41 | 51 | 62 |
| Difference | +23 | +26 | +20 | +9 | +4 | -9 | -3 | +1 | -5 | -10 | +5 | +21 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Houston | 62 | 65 | 62 | 58 | 56 | 49 |
| Difference | +23 | +26 | +20 | +9 | +4 | -9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Houston | 47 | 47 | 46 | 41 | 51 | 62 |
| Difference | -3 | +1 | -5 | -10 | +5 | +21 |
Relative humidity (%) Varies through 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 |
| Houston | 82 | 83 | 82 | 80 | 79 | 77 | 76 | 75 | 76 | 76 | 80 | 82 |
| Difference | +7 | +9 | +7 | +4 | +1 | -2 | -2 | -4 | -3 | -3 | +1 | +5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Houston | 82 | 83 | 82 | 80 | 79 | 77 |
| Difference | +7 | +9 | +7 | +4 | +1 | -2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Houston | 76 | 75 | 76 | 76 | 80 | 82 |
| Difference | -2 | -4 | -3 | -3 | +1 | +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 → · Houston 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.
Houston
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Houston Nwso (NOAA GHCN station USC00414333), about 42 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 Houston → · Castries page · Houston page