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Castries vs Cardiff
Comparing Castries change · Cardiff change
Castries is the warmer of the two — about 33°F on the annual average; Castries is the wetter, with 25 in more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Castries and Cardiff, in everyday terms.
Summers
Castries has far hotter summers
Castries: Warm
Cardiff: Cool
Winters
Castries has far milder winters
Castries: Stays warm
Cardiff: Chilly
Rain & snow
Castries is wetter
Castries: Very wet
Cardiff: Wet
Sky
Castries is far sunnier
Castries: Fairly sunny
Cardiff: Often grey
Month-by-month charts
Temperature
Castries is the warmer of the two — about 33°F on the annual average.
Precipitation
Castries is the wetter — about 25 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) 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 |
| Cardiff | 44 | 44 | 48 | 53 | 58 | 63 | 66 | 65 | 62 | 55 | 49 | 45 |
| Difference | -37 | -36 | -33 | -29 | -25 | -20 | -17 | -18 | -22 | -28 | -34 | -37 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Cardiff | 44 | 44 | 48 | 53 | 58 | 63 |
| Difference | -37 | -36 | -33 | -29 | -25 | -20 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Cardiff | 66 | 65 | 62 | 55 | 49 | 45 |
| Difference | -17 | -18 | -22 | -28 | -34 | -37 |
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 |
| Cardiff | 35 | 35 | 36 | 39 | 43 | 48 | 52 | 51 | 48 | 44 | 39 | 36 |
| Difference | -43 | -43 | -41 | -40 | -37 | -33 | -29 | -31 | -34 | -38 | -41 | -44 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Cardiff | 35 | 35 | 36 | 39 | 43 | 48 |
| Difference | -43 | -43 | -41 | -40 | -37 | -33 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Cardiff | 52 | 51 | 48 | 44 | 39 | 36 |
| Difference | -29 | -31 | -34 | -38 | -41 | -44 |
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 |
| Cardiff | 5.2 | 4.4 | 4 | 3 | 3.3 | 3.1 | 3.5 | 4 | 3.3 | 5.9 | 6 | 6.3 |
| Difference | +0.8 | +1.4 | +1.4 | -0.6 | -1.2 | -2.1 | -5 | -7.5 | -5.5 | -3.8 | -3.5 | +0.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Cardiff | 5.2 | 4.4 | 4 | 3 | 3.3 | 3.1 |
| Difference | +0.8 | +1.4 | +1.4 | -0.6 | -1.2 | -2.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Cardiff | 3.5 | 4 | 3.3 | 5.9 | 6 | 6.3 |
| Difference | -5 | -7.5 | -5.5 | -3.8 | -3.5 | +0.4 |
Cloud cover (%) Cardiff runs higher most of 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 |
| Cardiff | 77 | 77 | 76 | 73 | 72 | 73 | 71 | 73 | 71 | 76 | 79 | 79 |
| Difference | +38 | +38 | +35 | +24 | +20 | +14 | +21 | +27 | +21 | +24 | +33 | +38 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Cardiff | 77 | 77 | 76 | 73 | 72 | 73 |
| Difference | +38 | +38 | +35 | +24 | +20 | +14 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Cardiff | 71 | 73 | 71 | 76 | 79 | 79 |
| Difference | +21 | +27 | +21 | +24 | +33 | +38 |
Relative humidity (%) Cardiff 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 |
| Cardiff | 93 | 92 | 89 | 86 | 84 | 84 | 84 | 85 | 87 | 89 | 92 | 93 |
| Difference | +17 | +17 | +15 | +10 | +7 | +5 | +6 | +6 | +8 | +10 | +12 | +16 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Cardiff | 93 | 92 | 89 | 86 | 84 | 84 |
| Difference | +17 | +17 | +15 | +10 | +7 | +5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Cardiff | 84 | 85 | 87 | 89 | 92 | 93 |
| Difference | +6 | +6 | +8 | +10 | +12 | +16 |
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 → · Cardiff 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.
Cardiff
Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Liscombe, a weather station, about 53 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.
← change Castries · change Cardiff → · Castries page · Cardiff page