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Sendai vs Castries
Comparing Sendai change · Castries change
Castries is the warmer of the two — about 26°F on the annual average; Castries is the wetter, with 27 in more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Sendai and Castries, in everyday terms.
Summers
Summers are nearly the same
Sendai: Warm
Castries: Warm
Winters
Castries has far milder winters
Sendai: Cold
Castries: Stays warm
Rain & snow
Castries is wetter
Sendai: Wet
Castries: Very wet
Sky
Castries is far sunnier
Sendai: Often grey
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 26°F on the annual average.
Precipitation
Castries is the wetter — about 27 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sendai | 42 | 44 | 50 | 60 | 68 | 74 | 80 | 83 | 77 | 68 | 57 | 47 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +38 | +36 | +30 | +22 | +14 | +9 | +3 | +1 | +7 | +16 | +25 | +34 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sendai | 42 | 44 | 50 | 60 | 68 | 74 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Difference | +38 | +36 | +30 | +22 | +14 | +9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sendai | 80 | 83 | 77 | 68 | 57 | 47 |
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +3 | +1 | +7 | +16 | +25 | +34 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sendai | 30 | 30 | 35 | 43 | 53 | 61 | 68 | 71 | 64 | 53 | 42 | 34 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +48 | +47 | +43 | +35 | +27 | +20 | +13 | +11 | +18 | +28 | +39 | +46 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sendai | 30 | 30 | 35 | 43 | 53 | 61 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Difference | +48 | +47 | +43 | +35 | +27 | +20 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sendai | 68 | 71 | 64 | 53 | 42 | 34 |
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +13 | +11 | +18 | +28 | +39 | +46 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sendai | 1.7 | 1.3 | 2.9 | 3.6 | 4.3 | 5.7 | 7 | 6.2 | 7.6 | 5.9 | 2.3 | 1.7 |
| 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 | +2.8 | +1.6 | -0.3 | — | +0.1 | -0.4 | +1.5 | +5.3 | +1.2 | +3.8 | +7.2 | +4.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sendai | 1.7 | 1.3 | 2.9 | 3.6 | 4.3 | 5.7 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Difference | +2.8 | +1.6 | -0.3 | — | +0.1 | -0.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sendai | 7 | 6.2 | 7.6 | 5.9 | 2.3 | 1.7 |
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +1.5 | +5.3 | +1.2 | +3.8 | +7.2 | +4.1 |
Cloud cover (%) Sendai runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sendai | 77 | 75 | 73 | 71 | 71 | 77 | 80 | 71 | 76 | 72 | 74 | 79 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -39 | -37 | -31 | -22 | -18 | -18 | -30 | -25 | -25 | -21 | -28 | -38 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sendai | 77 | 75 | 73 | 71 | 71 | 77 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -39 | -37 | -31 | -22 | -18 | -18 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sendai | 80 | 71 | 76 | 72 | 74 | 79 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -30 | -25 | -25 | -21 | -28 | -38 |
Relative humidity (%) Sendai runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sendai | 95 | 93 | 87 | 82 | 81 | 83 | 86 | 85 | 87 | 87 | 89 | 93 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -19 | -19 | -12 | -6 | -4 | -5 | -7 | -6 | -8 | -8 | -10 | -16 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sendai | 95 | 93 | 87 | 82 | 81 | 83 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -19 | -19 | -12 | -6 | -4 | -5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sendai | 86 | 85 | 87 | 87 | 89 | 93 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -7 | -6 | -8 | -8 | -10 | -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. Sendai trends → · Castries trends →
Methodology & sources
Sendai
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Sendai, about 3 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 Sendai · change Castries → · Sendai page · Castries page