Home › Compare › Niseko vs Castries
Niseko vs Castries
Comparing Niseko change · Castries change
Castries is the warmer of the two — about 34°F on the annual average; Castries is the wetter, with 40 in 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 34°F on the annual average.
Precipitation
Castries is the wetter — about 40 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Niseko | 31 | 32 | 39 | 51 | 62 | 69 | 76 | 79 | 73 | 60 | 47 | 35 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +49 | +48 | +42 | +30 | +21 | +14 | +7 | +5 | +11 | +23 | +35 | +46 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Niseko | 31 | 32 | 39 | 51 | 62 | 69 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Difference | +49 | +48 | +42 | +30 | +21 | +14 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Niseko | 76 | 79 | 73 | 60 | 47 | 35 |
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +7 | +5 | +11 | +23 | +35 | +46 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Niseko | 20 | 20 | 26 | 35 | 45 | 53 | 62 | 63 | 55 | 44 | 34 | 24 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +58 | +58 | +52 | +44 | +36 | +27 | +20 | +18 | +27 | +38 | +47 | +55 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Niseko | 20 | 20 | 26 | 35 | 45 | 53 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Difference | +58 | +58 | +52 | +44 | +36 | +27 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Niseko | 62 | 63 | 55 | 44 | 34 | 24 |
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +20 | +18 | +27 | +38 | +47 | +55 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Niseko | 2.2 | 1.6 | 1.6 | 1.9 | 2.4 | 2.1 | 3.8 | 4.9 | 4.7 | 4.5 | 4.3 | 3.3 |
| 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 | +2.2 | +1.4 | +1 | +1.7 | +2.1 | +3.2 | +4.7 | +6.6 | +4.1 | +5.2 | +5.2 | +2.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Niseko | 2.2 | 1.6 | 1.6 | 1.9 | 2.4 | 2.1 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Difference | +2.2 | +1.4 | +1 | +1.7 | +2.1 | +3.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Niseko | 3.8 | 4.9 | 4.7 | 4.5 | 4.3 | 3.3 |
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +4.7 | +6.6 | +4.1 | +5.2 | +5.2 | +2.6 |
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