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Niseko vs Castries
Comparing Niseko change · Castries change
Castries is the warmer of the two — about 19°C on the annual average; Castries is the wetter, with 1017 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Niseko and Castries, in everyday terms.
Summers
Castries has hotter summers
Niseko: Warm
Castries: Warm
Winters
Castries has far milder winters
Niseko: Very cold
Castries: Stays warm
Rain & snow
Castries is wetter
Niseko: Moderate rainfall
Castries: Very wet
Sky
Castries is far sunnier
Niseko: Often grey
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 19°C on the annual average.
Precipitation
Castries is the wetter — about 1017 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Niseko | -0 | 0 | 4 | 11 | 17 | 21 | 25 | 26 | 23 | 16 | 8 | 2 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +27 | +27 | +23 | +17 | +12 | +8 | +4 | +3 | +6 | +13 | +20 | +26 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Niseko | -0 | 0 | 4 | 11 | 17 | 21 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +27 | +27 | +23 | +17 | +12 | +8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Niseko | 25 | 26 | 23 | 16 | 8 | 2 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +4 | +3 | +6 | +13 | +20 | +26 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Niseko | -7 | -7 | -3 | 2 | 7 | 12 | 16 | 17 | 13 | 7 | 1 | -4 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +32 | +32 | +29 | +24 | +20 | +15 | +11 | +10 | +15 | +21 | +26 | +30 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Niseko | -7 | -7 | -3 | 2 | 7 | 12 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +32 | +32 | +29 | +24 | +20 | +15 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Niseko | 16 | 17 | 13 | 7 | 1 | -4 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +11 | +10 | +15 | +21 | +26 | +30 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Niseko | 56 | 41 | 41 | 48 | 61 | 52 | 96 | 124 | 119 | 113 | 110 | 84 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +57 | +35 | +26 | +42 | +53 | +81 | +120 | +167 | +105 | +133 | +132 | +66 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Niseko | 56 | 41 | 41 | 48 | 61 | 52 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +57 | +35 | +26 | +42 | +53 | +81 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Niseko | 96 | 124 | 119 | 113 | 110 | 84 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +120 | +167 | +105 | +133 | +132 | +66 |
Cloud cover (%) Niseko runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Niseko | 90 | 86 | 77 | 69 | 70 | 73 | 77 | 73 | 71 | 73 | 83 | 89 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -51 | -47 | -35 | -20 | -18 | -15 | -27 | -27 | -20 | -22 | -37 | -48 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Niseko | 90 | 86 | 77 | 69 | 70 | 73 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -51 | -47 | -35 | -20 | -18 | -15 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Niseko | 77 | 73 | 71 | 73 | 83 | 89 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -27 | -27 | -20 | -22 | -37 | -48 |
Relative humidity (%) Niseko runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Niseko | 92 | 90 | 87 | 82 | 82 | 84 | 86 | 85 | 82 | 81 | 85 | 91 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -17 | -15 | -12 | -6 | -4 | -5 | -7 | -6 | -4 | -2 | -6 | -15 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Niseko | 92 | 90 | 87 | 82 | 82 | 84 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -17 | -15 | -12 | -6 | -4 | -5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Niseko | 86 | 85 | 82 | 81 | 85 | 91 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -7 | -6 | -4 | -2 | -6 | -15 |
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. Niseko trends → · Castries trends →
Methodology & sources
Niseko
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Kyowa, about 20 km from the city centre.
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 Niseko · change Castries → · Niseko page · Castries page