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Köln vs Castries
Comparing Köln change · Castries change
Castries is the warmer of the two — about 17°C on the annual average; Castries is the wetter, with 1160 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Köln and Castries, in everyday terms.
Summers
Castries has much hotter summers
Köln: Mild
Castries: Warm
Winters
Castries has far milder winters
Köln: Chilly
Castries: Stays warm
Rain & snow
Castries is much wetter
Köln: Moderate rainfall
Castries: Very wet
Sky
Castries is far sunnier
Köln: Often grey
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 17°C on the annual average.
Precipitation
Castries is the wetter — about 1160 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Köln | 6 | 7 | 11 | 16 | 20 | 23 | 25 | 25 | 20 | 15 | 10 | 6 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +21 | +19 | +15 | +11 | +8 | +6 | +4 | +4 | +9 | +13 | +18 | +21 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Köln | 6 | 7 | 11 | 16 | 20 | 23 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +21 | +19 | +15 | +11 | +8 | +6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Köln | 25 | 25 | 20 | 15 | 10 | 6 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +4 | +4 | +9 | +13 | +18 | +21 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Köln | 0 | 0 | 2 | 4 | 8 | 11 | 13 | 13 | 10 | 7 | 3 | 1 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +26 | +25 | +23 | +22 | +19 | +16 | +14 | +15 | +18 | +21 | +24 | +25 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Köln | 0 | 0 | 2 | 4 | 8 | 11 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +26 | +25 | +23 | +22 | +19 | +16 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Köln | 13 | 13 | 10 | 7 | 3 | 1 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +14 | +15 | +18 | +21 | +24 | +25 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Köln | 62 | 54 | 55 | 48 | 62 | 86 | 87 | 83 | 67 | 65 | 64 | 69 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +52 | +22 | +11 | +42 | +52 | +47 | +129 | +208 | +157 | +182 | +179 | +80 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Köln | 62 | 54 | 55 | 48 | 62 | 86 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +52 | +22 | +11 | +42 | +52 | +47 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Köln | 87 | 83 | 67 | 65 | 64 | 69 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +129 | +208 | +157 | +182 | +179 | +80 |
Cloud cover (%) Köln runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Köln | 75 | 74 | 73 | 70 | 72 | 72 | 70 | 68 | 67 | 72 | 78 | 77 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -37 | -36 | -31 | -21 | -20 | -14 | -20 | -22 | -16 | -21 | -32 | -37 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Köln | 75 | 74 | 73 | 70 | 72 | 72 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -37 | -36 | -31 | -21 | -20 | -14 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Köln | 70 | 68 | 67 | 72 | 78 | 77 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -20 | -22 | -16 | -21 | -32 | -37 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Köln | 92 | 89 | 84 | 79 | 77 | 74 | 70 | 69 | 75 | 84 | 91 | 93 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -17 | -15 | -9 | -3 | +1 | +4 | +9 | +10 | +4 | -4 | -12 | -16 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Köln | 92 | 89 | 84 | 79 | 77 | 74 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -17 | -15 | -9 | -3 | +1 | +4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Köln | 70 | 69 | 75 | 84 | 91 | 93 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +9 | +10 | +4 | -4 | -12 | -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. Köln trends → · Castries trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
Methodology & sources
Köln
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Koln-bonn, a weather station, about 16 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.
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 Köln · change Castries → · Köln page · Castries page