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Castries vs Windhoek
Comparing Castries change · Windhoek change
Castries is the warmer of the two — about 6°C on the annual average; Castries is the wetter, with 1630 mm more rain a year, and Windhoek the sunnier.
How the seasons compare
The differences between Castries and Windhoek, in everyday terms.
Summers
Windhoek has hotter summers
Castries: Warm
Windhoek: Hot
Winters
Castries has far milder winters
Castries: Stays warm
Windhoek: Cool
Rain & snow
Castries is much wetter
Castries: Very wet
Windhoek: Fairly dry
Sky
Windhoek is sunnier
Castries: Fairly sunny
Windhoek: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 6°C on the annual average.
Precipitation
Castries is the wetter — about 1630 mm more across the year.
Clear skies
Windhoek 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) Varies through 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 |
| Windhoek | 32 | 31 | 30 | 27 | 25 | 23 | 23 | 25 | 29 | 32 | 32 | 33 |
| Difference | +5 | +4 | +3 | — | -3 | -6 | -6 | -4 | — | +3 | +4 | +5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Windhoek | 32 | 31 | 30 | 27 | 25 | 23 |
| Difference | +5 | +4 | +3 | — | -3 | -6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Windhoek | 23 | 25 | 29 | 32 | 32 | 33 |
| Difference | -6 | -4 | — | +3 | +4 | +5 |
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 |
| Windhoek | 18 | 17 | 16 | 14 | 10 | 8 | 7 | 9 | 13 | 16 | 17 | 17 |
| Difference | -8 | -8 | -9 | -12 | -16 | -19 | -20 | -18 | -14 | -12 | -11 | -9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Windhoek | 18 | 17 | 16 | 14 | 10 | 8 |
| Difference | -8 | -8 | -9 | -12 | -16 | -19 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Windhoek | 7 | 9 | 13 | 16 | 17 | 17 |
| Difference | -20 | -18 | -14 | -12 | -11 | -9 |
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 |
| Windhoek | 68 | 88 | 74 | 33 | 6 | 1 | 1 | 0 | 3 | 9 | 17 | 35 |
| Difference | -45 | +12 | +7 | -57 | -108 | -133 | -215 | -291 | -221 | -238 | -226 | -115 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Windhoek | 68 | 88 | 74 | 33 | 6 | 1 |
| Difference | -45 | +12 | +7 | -57 | -108 | -133 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Windhoek | 1 | 0 | 3 | 9 | 17 | 35 |
| Difference | -215 | -291 | -221 | -238 | -226 | -115 |
Cloud cover (%) Varies through 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 |
| Windhoek | 60 | 62 | 54 | 37 | 22 | 18 | 18 | 18 | 25 | 38 | 45 | 53 |
| Difference | +22 | +23 | +12 | -12 | -30 | -41 | -31 | -28 | -26 | -13 | -2 | +12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Windhoek | 60 | 62 | 54 | 37 | 22 | 18 |
| Difference | +22 | +23 | +12 | -12 | -30 | -41 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Windhoek | 18 | 18 | 25 | 38 | 45 | 53 |
| Difference | -31 | -28 | -26 | -13 | -2 | +12 |
Relative humidity (%) Castries 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 |
| Windhoek | 44 | 50 | 51 | 47 | 38 | 34 | 32 | 23 | 20 | 24 | 28 | 34 |
| Difference | -32 | -24 | -24 | -29 | -39 | -45 | -47 | -55 | -58 | -55 | -51 | -42 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Windhoek | 44 | 50 | 51 | 47 | 38 | 34 |
| Difference | -32 | -24 | -24 | -29 | -39 | -45 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Windhoek | 32 | 23 | 20 | 24 | 28 | 34 |
| Difference | -47 | -55 | -58 | -55 | -51 | -42 |
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 → · Windhoek trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
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.
Windhoek
Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Windhoek, a weather station, about 2 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 Castries · change Windhoek → · Castries page · Windhoek page