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Castries vs Cardiff
Comparing Castries change · Cardiff change
Castries is the warmer of the two — about 18°C on the annual average; Castries is the wetter, with 641 mm 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 18°C on the annual average.
Precipitation
Castries is the wetter — about 641 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) Castries runs higher most of 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 |
| Cardiff | 6 | 7 | 9 | 12 | 14 | 17 | 19 | 19 | 17 | 13 | 9 | 7 |
| Difference | -20 | -20 | -18 | -16 | -14 | -11 | -10 | -10 | -12 | -16 | -19 | -20 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Cardiff | 6 | 7 | 9 | 12 | 14 | 17 |
| Difference | -20 | -20 | -18 | -16 | -14 | -11 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Cardiff | 19 | 19 | 17 | 13 | 9 | 7 |
| Difference | -10 | -10 | -12 | -16 | -19 | -20 |
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 |
| Cardiff | 2 | 1 | 2 | 4 | 6 | 9 | 11 | 11 | 9 | 7 | 4 | 2 |
| Difference | -24 | -24 | -23 | -22 | -21 | -18 | -16 | -17 | -19 | -21 | -23 | -24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Cardiff | 2 | 1 | 2 | 4 | 6 | 9 |
| Difference | -24 | -24 | -23 | -22 | -21 | -18 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Cardiff | 11 | 11 | 9 | 7 | 4 | 2 |
| Difference | -16 | -17 | -19 | -21 | -23 | -24 |
Precipitation (mm) Varies through 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 |
| Cardiff | 133 | 111 | 101 | 75 | 84 | 80 | 88 | 102 | 85 | 151 | 153 | 159 |
| Difference | +19 | +35 | +35 | -14 | -30 | -54 | -128 | -190 | -139 | -96 | -90 | +10 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Cardiff | 133 | 111 | 101 | 75 | 84 | 80 |
| Difference | +19 | +35 | +35 | -14 | -30 | -54 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Cardiff | 88 | 102 | 85 | 151 | 153 | 159 |
| Difference | -128 | -190 | -139 | -96 | -90 | +10 |
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