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Castries vs Anchorage
Comparing Castries change · Anchorage change
Castries is the warmer of the two — about 24°C on the annual average; Castries is the wetter, with 1545 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Castries and Anchorage, in everyday terms.
Summers
Castries has far hotter summers
Castries: Warm
Anchorage: Mild
Winters
Castries has far milder winters
Castries: Stays warm
Anchorage: Very cold
Rain & snow
Castries is much wetter
Castries: Very wet
Anchorage: Fairly dry
Sky
Castries is sunnier
Castries: Fairly sunny
Anchorage: Often cloudy
Month-by-month charts
Temperature
Castries is the warmer of the two — about 24°C on the annual average.
Precipitation
Castries is the wetter — about 1545 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Anchorage | -5 | -3 | 1 | 7 | 14 | 17 | 19 | 18 | 13 | 6 | -2 | -4 |
| Difference | -32 | -29 | -26 | -20 | -15 | -11 | -9 | -11 | -16 | -23 | -30 | -31 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Anchorage | -5 | -3 | 1 | 7 | 14 | 17 |
| Difference | -32 | -29 | -26 | -20 | -15 | -11 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Anchorage | 19 | 18 | 13 | 6 | -2 | -4 |
| Difference | -9 | -11 | -16 | -23 | -30 | -31 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Anchorage | -12 | -9 | -7 | -1 | 4 | 9 | 12 | 11 | 6 | -1 | -8 | -10 |
| Difference | -37 | -35 | -33 | -27 | -22 | -18 | -16 | -17 | -22 | -28 | -35 | -36 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Anchorage | -12 | -9 | -7 | -1 | 4 | 9 |
| Difference | -37 | -35 | -33 | -27 | -22 | -18 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Anchorage | 12 | 11 | 6 | -1 | -8 | -10 |
| Difference | -16 | -17 | -22 | -28 | -35 | -36 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Anchorage | 19 | 22 | 18 | 11 | 17 | 26 | 46 | 74 | 79 | 46 | 30 | 29 |
| Difference | -94 | -54 | -49 | -79 | -97 | -108 | -170 | -217 | -145 | -200 | -212 | -120 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Anchorage | 19 | 22 | 18 | 11 | 17 | 26 |
| Difference | -94 | -54 | -49 | -79 | -97 | -108 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Anchorage | 46 | 74 | 79 | 46 | 30 | 29 |
| Difference | -170 | -217 | -145 | -200 | -212 | -120 |
Snowfall (cm)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | — | — | — | — | — | — | — | — | — | — | — | — |
| Anchorage | 31 | 34 | 28 | 10 | 1 | 0 | 0 | 0 | 1 | 14 | 32 | 46 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | — | — | — | — | — | — |
| Anchorage | 31 | 34 | 28 | 10 | 1 | 0 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | — | — | — | — | — | — |
| Anchorage | 0 | 0 | 1 | 14 | 32 | 46 |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Anchorage runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Anchorage | 62 | 64 | 55 | 62 | 69 | 70 | 74 | 71 | 70 | 67 | 64 | 69 |
| Difference | +24 | +25 | +14 | +13 | +16 | +11 | +24 | +25 | +19 | +16 | +17 | +28 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Anchorage | 62 | 64 | 55 | 62 | 69 | 70 |
| Difference | +24 | +25 | +14 | +13 | +16 | +11 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Anchorage | 74 | 71 | 70 | 67 | 64 | 69 |
| Difference | +24 | +25 | +19 | +16 | +17 | +28 |
Relative humidity (%) Anchorage runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Anchorage | 92 | 91 | 89 | 83 | 78 | 78 | 81 | 82 | 84 | 88 | 92 | 93 |
| Difference | +17 | +16 | +14 | +7 | +1 | — | +2 | +3 | +5 | +9 | +13 | +16 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Anchorage | 92 | 91 | 89 | 83 | 78 | 78 |
| Difference | +17 | +16 | +14 | +7 | +1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Anchorage | 81 | 82 | 84 | 88 | 92 | 93 |
| Difference | +2 | +3 | +5 | +9 | +13 | +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. Castries trends → · Anchorage trends →
Methodology & sources
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.
Anchorage
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Anchorage Ted Stevens Intl AP (NOAA GHCN station USW00026451), about 9 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.
← change Castries · change Anchorage → · Castries page · Anchorage page