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Melbourne vs Castries
Comparing Melbourne change · Castries change
Castries is the warmer of the two — about 11°C on the annual average; Castries is the wetter, with 1388 mm 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 11°C on the annual average.
Precipitation
Castries is the wetter — about 1388 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Melbourne | 27 | 27 | 25 | 21 | 18 | 15 | 15 | 16 | 18 | 20 | 23 | 25 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | — | — | +2 | +6 | +11 | +13 | +14 | +13 | +11 | +8 | +5 | +3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Melbourne | 27 | 27 | 25 | 21 | 18 | 15 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | — | — | +2 | +6 | +11 | +13 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Melbourne | 15 | 16 | 18 | 20 | 23 | 25 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +14 | +13 | +11 | +8 | +5 | +3 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Melbourne | 16 | 16 | 15 | 12 | 10 | 8 | 7 | 8 | 9 | 11 | 13 | 14 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +9 | +9 | +11 | +14 | +17 | +19 | +20 | +20 | +18 | +17 | +14 | +12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Melbourne | 16 | 16 | 15 | 12 | 10 | 8 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +9 | +9 | +11 | +14 | +17 | +19 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Melbourne | 7 | 8 | 9 | 11 | 13 | 14 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +20 | +20 | +18 | +17 | +14 | +12 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Melbourne | 45 | 45 | 37 | 50 | 41 | 46 | 37 | 45 | 53 | 57 | 62 | 57 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +68 | +30 | +29 | +39 | +73 | +88 | +180 | +246 | +171 | +190 | +181 | +93 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Melbourne | 45 | 45 | 37 | 50 | 41 | 46 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +68 | +30 | +29 | +39 | +73 | +88 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Melbourne | 37 | 45 | 53 | 57 | 62 | 57 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +180 | +246 | +171 | +190 | +181 | +93 |
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