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Galway vs Castries
Comparing Galway change · Castries change
Castries is the warmer of the two — about 30°F on the annual average; Castries is the wetter, with 28 in 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 30°F on the annual average.
Precipitation
Castries is the wetter — about 28 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Galway | 48 | 49 | 51 | 54 | 60 | 63 | 66 | 67 | 64 | 57 | 53 | 48 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +32 | +31 | +29 | +27 | +22 | +20 | +17 | +17 | +20 | +26 | +30 | +33 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Galway | 48 | 49 | 51 | 54 | 60 | 63 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Difference | +32 | +31 | +29 | +27 | +22 | +20 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Galway | 66 | 67 | 64 | 57 | 53 | 48 |
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +17 | +17 | +20 | +26 | +30 | +33 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Galway | 38 | 39 | 41 | 42 | 47 | 51 | 55 | 55 | 51 | 46 | 42 | 38 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +40 | +39 | +37 | +36 | +34 | +30 | +26 | +27 | +31 | +36 | +38 | +41 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Galway | 38 | 39 | 41 | 42 | 47 | 51 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Difference | +40 | +39 | +37 | +36 | +34 | +30 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Galway | 55 | 55 | 51 | 46 | 42 | 38 |
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +26 | +27 | +31 | +36 | +38 | +41 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Galway | 4.8 | 5.2 | 3.4 | 2.8 | 2.8 | 3.4 | 3.5 | 3.9 | 3.6 | 5.7 | 5.6 | 4.7 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | -0.3 | -2.3 | -0.8 | +0.8 | +1.7 | +1.8 | +5.1 | +7.6 | +5.2 | +4 | +4 | +1.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Galway | 4.8 | 5.2 | 3.4 | 2.8 | 2.8 | 3.4 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Difference | -0.3 | -2.3 | -0.8 | +0.8 | +1.7 | +1.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Galway | 3.5 | 3.9 | 3.6 | 5.7 | 5.6 | 4.7 |
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +5.1 | +7.6 | +5.2 | +4 | +4 | +1.2 |
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.
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