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Galway vs Castries
Comparing Galway change · Castries change
Castries is the warmer of the two — about 17°C on the annual average; Castries is the wetter, with 712 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Galway and Castries, in everyday terms.
Summers
Castries has far hotter summers
Galway: Mild
Castries: Warm
Winters
Castries has far milder winters
Galway: Chilly
Castries: Stays warm
Rain & snow
Castries is wetter
Galway: Wet
Castries: Very wet
Sky
Castries is far sunnier
Galway: 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 712 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Galway | 9 | 10 | 11 | 12 | 16 | 17 | 19 | 19 | 18 | 14 | 11 | 9 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +18 | +17 | +16 | +15 | +12 | +11 | +9 | +9 | +11 | +15 | +17 | +18 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Galway | 9 | 10 | 11 | 12 | 16 | 17 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +18 | +17 | +16 | +15 | +12 | +11 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Galway | 19 | 19 | 18 | 14 | 11 | 9 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +9 | +9 | +11 | +15 | +17 | +18 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Galway | 3 | 4 | 5 | 6 | 8 | 11 | 13 | 13 | 10 | 8 | 6 | 3 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +22 | +21 | +20 | +20 | +19 | +17 | +15 | +15 | +17 | +20 | +21 | +23 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Galway | 3 | 4 | 5 | 6 | 8 | 11 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +22 | +21 | +20 | +20 | +19 | +17 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Galway | 13 | 13 | 10 | 8 | 6 | 3 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +15 | +15 | +17 | +20 | +21 | +23 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Galway | 121 | 133 | 86 | 70 | 70 | 87 | 88 | 99 | 91 | 145 | 141 | 118 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | -8 | -57 | -20 | +19 | +43 | +47 | +129 | +192 | +133 | +101 | +102 | +31 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Galway | 121 | 133 | 86 | 70 | 70 | 87 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | -8 | -57 | -20 | +19 | +43 | +47 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Galway | 88 | 99 | 91 | 145 | 141 | 118 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +129 | +192 | +133 | +101 | +102 | +31 |
Cloud cover (%) Galway runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Galway | 75 | 76 | 76 | 74 | 75 | 79 | 81 | 78 | 74 | 72 | 73 | 74 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -36 | -37 | -34 | -25 | -23 | -20 | -31 | -32 | -23 | -21 | -27 | -33 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Galway | 75 | 76 | 76 | 74 | 75 | 79 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -36 | -37 | -34 | -25 | -23 | -20 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Galway | 81 | 78 | 74 | 72 | 73 | 74 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -31 | -32 | -23 | -21 | -27 | -33 |
Relative humidity (%) Galway runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Galway | 94 | 92 | 89 | 84 | 80 | 78 | 81 | 83 | 86 | 90 | 94 | 95 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -18 | -18 | -14 | -8 | -2 | — | -2 | -4 | -7 | -11 | -15 | -18 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Galway | 94 | 92 | 89 | 84 | 80 | 78 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -18 | -18 | -14 | -8 | -2 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Galway | 81 | 83 | 86 | 90 | 94 | 95 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -2 | -4 | -7 | -11 | -15 | -18 |
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. Galway trends → · Castries trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
Methodology & sources
Galway
Temperature & precipitation — 1991–2020 normals computed from 11 years of daily observations at Galway, a weather station, about 2 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 Galway · change Castries → · Galway page · Castries page