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Melbourne vs Castries
Comparing Melbourne change · Castries change
Castries is the warmer of the two — about 20°F on the annual average; Castries is the wetter, with 55 in more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Melbourne and Castries, in everyday terms.
Summers
Castries has hotter summers
Melbourne: Warm
Castries: Warm
Winters
Castries has far milder winters
Melbourne: Cool
Castries: Stays warm
Rain & snow
Castries is much wetter
Melbourne: Moderate rainfall
Castries: Very wet
Sky
Castries is sunnier
Melbourne: Partly cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 20°F on the annual average.
Precipitation
Castries is the wetter — about 55 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Melbourne | 80 | 80 | 76 | 70 | 64 | 59 | 58 | 61 | 65 | 69 | 73 | 77 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | — | -1 | +4 | +12 | +19 | +24 | +25 | +23 | +19 | +15 | +9 | +5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Melbourne | 80 | 80 | 76 | 70 | 64 | 59 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Difference | — | -1 | +4 | +12 | +19 | +24 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Melbourne | 58 | 61 | 65 | 69 | 73 | 77 |
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +25 | +23 | +19 | +15 | +9 | +5 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Melbourne | 61 | 61 | 58 | 53 | 50 | 47 | 45 | 46 | 49 | 52 | 55 | 58 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +17 | +16 | +19 | +26 | +31 | +34 | +36 | +35 | +33 | +30 | +26 | +22 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Melbourne | 61 | 61 | 58 | 53 | 50 | 47 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Difference | +17 | +16 | +19 | +26 | +31 | +34 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Melbourne | 45 | 46 | 49 | 52 | 55 | 58 |
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +36 | +35 | +33 | +30 | +26 | +22 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Melbourne | 1.8 | 1.8 | 1.5 | 2 | 1.6 | 1.8 | 1.4 | 1.8 | 2.1 | 2.2 | 2.4 | 2.2 |
| 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 | +2.7 | +1.2 | +1.2 | +1.6 | +2.9 | +3.5 | +7.1 | +9.7 | +6.7 | +7.5 | +7.1 | +3.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Melbourne | 1.8 | 1.8 | 1.5 | 2 | 1.6 | 1.8 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Difference | +2.7 | +1.2 | +1.2 | +1.6 | +2.9 | +3.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Melbourne | 1.4 | 1.8 | 2.1 | 2.2 | 2.4 | 2.2 |
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +7.1 | +9.7 | +6.7 | +7.5 | +7.1 | +3.6 |
Cloud cover (%) Melbourne runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Melbourne | 57 | 55 | 56 | 56 | 60 | 61 | 62 | 60 | 62 | 63 | 64 | 60 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -19 | -16 | -14 | -7 | -8 | -3 | -12 | -14 | -12 | -11 | -18 | -20 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Melbourne | 57 | 55 | 56 | 56 | 60 | 61 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -19 | -16 | -14 | -7 | -8 | -3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Melbourne | 62 | 60 | 62 | 63 | 64 | 60 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -12 | -14 | -12 | -11 | -18 | -20 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Melbourne | 66 | 67 | 69 | 73 | 80 | 85 | 84 | 82 | 79 | 74 | 71 | 67 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +10 | +8 | +6 | +3 | -2 | -6 | -6 | -3 | — | +5 | +8 | +10 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Melbourne | 66 | 67 | 69 | 73 | 80 | 85 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | +10 | +8 | +6 | +3 | -2 | -6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Melbourne | 84 | 82 | 79 | 74 | 71 | 67 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -6 | -3 | — | +5 | +8 | +10 |
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. Melbourne trends → · Castries trends →
Melbourne is projected to shift from Cfb to Cfa by the 2071–2099 window (SSP2-4.5).
Methodology & sources
Melbourne
Temperature & precipitation — 1991–2020 normals computed from 24 years of daily observations at Melbourne Regional Office, a weather station, inside the city. 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 Melbourne · change Castries → · Melbourne page · Castries page