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Sapporo vs Castries
Comparing Sapporo change · Castries change
Castries is the warmer of the two — about 18°C on the annual average; Castries is the wetter, with 816 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Sapporo and Castries, in everyday terms.
Summers
Castries has hotter summers
Sapporo: Warm
Castries: Warm
Winters
Castries has far milder winters
Sapporo: Cold
Castries: Stays warm
Rain & snow
Castries is wetter
Sapporo: Wet
Castries: Very wet
Sky
Castries is far sunnier
Sapporo: Often grey
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 18°C on the annual average.
Precipitation
Castries is the wetter — about 816 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sapporo | -0 | 0 | 5 | 12 | 18 | 22 | 25 | 26 | 23 | 16 | 9 | 2 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +27 | +26 | +22 | +16 | +10 | +7 | +3 | +2 | +6 | +12 | +19 | +25 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sapporo | -0 | 0 | 5 | 12 | 18 | 22 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +27 | +26 | +22 | +16 | +10 | +7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sapporo | 25 | 26 | 23 | 16 | 9 | 2 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +3 | +2 | +6 | +12 | +19 | +25 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sapporo | -6 | -6 | -2 | 3 | 9 | 13 | 18 | 19 | 15 | 8 | 2 | -4 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +32 | +31 | +28 | +23 | +18 | +14 | +9 | +9 | +13 | +20 | +25 | +30 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sapporo | -6 | -6 | -2 | 3 | 9 | 13 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +32 | +31 | +28 | +23 | +18 | +14 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sapporo | 18 | 19 | 15 | 8 | 2 | -4 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +9 | +9 | +13 | +20 | +25 | +30 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sapporo | 108 | 92 | 78 | 55 | 55 | 60 | 91 | 127 | 142 | 110 | 114 | 115 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +5 | -16 | -11 | +35 | +58 | +73 | +125 | +165 | +82 | +136 | +129 | +35 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sapporo | 108 | 92 | 78 | 55 | 55 | 60 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +5 | -16 | -11 | +35 | +58 | +73 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sapporo | 91 | 127 | 142 | 110 | 114 | 115 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +125 | +165 | +82 | +136 | +129 | +35 |
Cloud cover (%) Sapporo runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sapporo | 91 | 86 | 79 | 72 | 71 | 73 | 76 | 73 | 72 | 75 | 86 | 91 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -53 | -48 | -37 | -23 | -19 | -14 | -26 | -27 | -21 | -24 | -39 | -50 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sapporo | 91 | 86 | 79 | 72 | 71 | 73 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -53 | -48 | -37 | -23 | -19 | -14 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sapporo | 76 | 73 | 72 | 75 | 86 | 91 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -26 | -27 | -21 | -24 | -39 | -50 |
Relative humidity (%) Sapporo runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sapporo | 94 | 92 | 90 | 84 | 82 | 84 | 86 | 86 | 85 | 84 | 88 | 93 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -19 | -18 | -15 | -8 | -4 | -5 | -7 | -7 | -7 | -5 | -9 | -16 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sapporo | 94 | 92 | 90 | 84 | 82 | 84 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -19 | -18 | -15 | -8 | -4 | -5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sapporo | 86 | 86 | 85 | 84 | 88 | 93 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -7 | -7 | -7 | -5 | -9 | -16 |
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. Sapporo trends → · Castries trends →
Methodology & sources
Sapporo
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Sapporo, about 2 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 Sapporo · change Castries → · Sapporo page · Castries page