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Castries vs San Jose
Comparing Castries change · San Jose change
Castries is the warmer of the two — about 21°F on the annual average; Castries is the wetter, with 55 in more rain a year, and San Jose the sunnier.
How the seasons compare
The differences between Castries and San Jose, in everyday terms.
Summers
Summers are nearly the same
Castries: Warm
San Jose: Warm
Winters
Castries has far milder winters
Castries: Stays warm
San Jose: Chilly
Rain & snow
Castries is much wetter
Castries: Very wet
San Jose: Moderate rainfall
Sky
San Jose is sunnier
Castries: Fairly sunny
San Jose: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 21°F on the annual average.
Precipitation
Castries is the wetter — about 55 in more across the year.
Clear skies
San Jose 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 |
| San Jose | 59 | 62 | 66 | 70 | 76 | 82 | 85 | 85 | 83 | 76 | 65 | 58 |
| Difference | -22 | -18 | -14 | -11 | -7 | -1 | +2 | +1 | -1 | -8 | -18 | -24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| San Jose | 59 | 62 | 66 | 70 | 76 | 82 |
| Difference | -22 | -18 | -14 | -11 | -7 | -1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| San Jose | 85 | 85 | 83 | 76 | 65 | 58 |
| Difference | +2 | +1 | -1 | -8 | -18 | -24 |
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 |
| San Jose | 40 | 41 | 43 | 45 | 49 | 53 | 56 | 56 | 54 | 49 | 43 | 40 |
| Difference | -39 | -36 | -35 | -34 | -31 | -28 | -25 | -26 | -28 | -33 | -38 | -40 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| San Jose | 40 | 41 | 43 | 45 | 49 | 53 |
| Difference | -39 | -36 | -35 | -34 | -31 | -28 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| San Jose | 56 | 56 | 54 | 49 | 43 | 40 |
| Difference | -25 | -26 | -28 | -33 | -38 | -40 |
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 |
| San Jose | 5 | 4.9 | 3.4 | 1.4 | 0.5 | 0.2 | 0 | 0 | 0.1 | 0.8 | 2 | 4 |
| Difference | +0.6 | +1.9 | +0.8 | -2.2 | -4 | -5.1 | -8.5 | -11.4 | -8.8 | -8.9 | -7.6 | -1.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| San Jose | 5 | 4.9 | 3.4 | 1.4 | 0.5 | 0.2 |
| Difference | +0.6 | +1.9 | +0.8 | -2.2 | -4 | -5.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| San Jose | 0 | 0 | 0.1 | 0.8 | 2 | 4 |
| Difference | -8.5 | -11.4 | -8.8 | -8.9 | -7.6 | -1.9 |
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 |
| San Jose | 55 | 53 | 49 | 42 | 33 | 20 | 14 | 14 | 16 | 26 | 41 | 52 |
| Difference | +17 | +14 | +7 | -7 | -19 | -39 | -36 | -32 | -35 | -25 | -5 | +12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| San Jose | 55 | 53 | 49 | 42 | 33 | 20 |
| Difference | +17 | +14 | +7 | -7 | -19 | -39 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| San Jose | 14 | 14 | 16 | 26 | 41 | 52 |
| Difference | -36 | -32 | -35 | -25 | -5 | +12 |
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 |
| San Jose | 83 | 83 | 82 | 79 | 76 | 71 | 69 | 69 | 67 | 68 | 75 | 80 |
| Difference | +7 | +9 | +8 | +3 | -2 | -7 | -9 | -10 | -11 | -11 | -4 | +3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| San Jose | 83 | 83 | 82 | 79 | 76 | 71 |
| Difference | +7 | +9 | +8 | +3 | -2 | -7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| San Jose | 69 | 69 | 67 | 68 | 75 | 80 |
| Difference | -9 | -10 | -11 | -11 | -4 | +3 |
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 → · San Jose 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.
San Jose
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Los Gatos (NOAA GHCN station USC00045123), about 13 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 San Jose → · Castries page · San Jose page