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Dublin vs Castries
Comparing Dublin change · Castries change
Castries is the warmer of the two — about 17°C on the annual average; Castries is the wetter, with 1191 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Dublin and Castries, in everyday terms.
Summers
Castries has far hotter summers
Dublin: Mild
Castries: Warm
Winters
Castries has far milder winters
Dublin: Chilly
Castries: Stays warm
Rain & snow
Castries is much wetter
Dublin: Moderate rainfall
Castries: Very wet
Sky
Castries is far sunnier
Dublin: Often grey
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 17°C on the annual average.
Precipitation
Castries is the wetter — about 1191 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dublin | 8 | 9 | 11 | 13 | 16 | 18 | 20 | 20 | 18 | 14 | 11 | 9 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +18 | +18 | +16 | +14 | +12 | +10 | +8 | +9 | +11 | +14 | +17 | +19 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Dublin | 8 | 9 | 11 | 13 | 16 | 18 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +18 | +18 | +16 | +14 | +12 | +10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Dublin | 20 | 20 | 18 | 14 | 11 | 9 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +8 | +9 | +11 | +14 | +17 | +19 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dublin | 2 | 2 | 3 | 4 | 7 | 9 | 12 | 11 | 9 | 7 | 4 | 3 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +23 | +23 | +22 | +22 | +20 | +18 | +16 | +16 | +18 | +21 | +23 | +24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Dublin | 2 | 2 | 3 | 4 | 7 | 9 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +23 | +23 | +22 | +22 | +20 | +18 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Dublin | 12 | 11 | 9 | 7 | 4 | 3 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +16 | +16 | +18 | +21 | +23 | +24 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dublin | 63 | 56 | 54 | 58 | 58 | 60 | 60 | 67 | 60 | 76 | 86 | 73 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +50 | +20 | +12 | +32 | +56 | +74 | +156 | +224 | +164 | +170 | +156 | +76 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Dublin | 63 | 56 | 54 | 58 | 58 | 60 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +50 | +20 | +12 | +32 | +56 | +74 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Dublin | 60 | 67 | 60 | 76 | 86 | 73 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +156 | +224 | +164 | +170 | +156 | +76 |
Cloud cover (%) Dublin runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dublin | 76 | 77 | 76 | 75 | 74 | 77 | 78 | 77 | 74 | 73 | 73 | 74 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -38 | -38 | -35 | -26 | -22 | -19 | -28 | -31 | -24 | -22 | -26 | -33 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Dublin | 76 | 77 | 76 | 75 | 74 | 77 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -38 | -38 | -35 | -26 | -22 | -19 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Dublin | 78 | 77 | 74 | 73 | 73 | 74 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -28 | -31 | -24 | -22 | -26 | -33 |
Relative humidity (%) Dublin runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dublin | 91 | 90 | 88 | 86 | 84 | 84 | 85 | 86 | 87 | 88 | 91 | 91 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -15 | -15 | -13 | -10 | -7 | -6 | -6 | -7 | -9 | -9 | -11 | -14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Dublin | 91 | 90 | 88 | 86 | 84 | 84 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -15 | -15 | -13 | -10 | -7 | -6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Dublin | 85 | 86 | 87 | 88 | 91 | 91 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -6 | -7 | -9 | -9 | -11 | -14 |
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. Dublin trends → · Castries trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
Methodology & sources
Dublin
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Dublin Phoenix Park, a weather station, about 6 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.
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.
← change Dublin · change Castries → · Dublin page · Castries page