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Basel vs Castries
Comparing Basel change · Castries change
Castries is the warmer of the two — about 16°C on the annual average; Castries is the wetter, with 1120 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Basel and Castries, in everyday terms.
Summers
Castries has hotter summers
Basel: Warm
Castries: Warm
Winters
Castries has far milder winters
Basel: Cold
Castries: Stays warm
Rain & snow
Castries is much wetter
Basel: Moderate rainfall
Castries: Very wet
Sky
Castries is sunnier
Basel: Often cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 16°C on the annual average.
Precipitation
Castries is the wetter — about 1120 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basel | 5 | 7 | 12 | 16 | 20 | 24 | 26 | 25 | 21 | 15 | 9 | 6 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +22 | +20 | +15 | +11 | +8 | +5 | +3 | +3 | +8 | +13 | +19 | +22 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Basel | 5 | 7 | 12 | 16 | 20 | 24 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +22 | +20 | +15 | +11 | +8 | +5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Basel | 26 | 25 | 21 | 15 | 9 | 6 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +3 | +3 | +8 | +13 | +19 | +22 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basel | -0 | -0 | 3 | 6 | 10 | 13 | 15 | 15 | 11 | 8 | 3 | 0 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +26 | +25 | +23 | +21 | +17 | +14 | +12 | +13 | +17 | +20 | +24 | +26 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Basel | -0 | -0 | 3 | 6 | 10 | 13 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +26 | +25 | +23 | +21 | +17 | +14 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Basel | 15 | 15 | 11 | 8 | 3 | 0 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +12 | +13 | +17 | +20 | +24 | +26 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basel | 48 | 45 | 50 | 64 | 98 | 87 | 89 | 88 | 70 | 74 | 65 | 65 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +65 | +30 | +17 | +26 | +16 | +47 | +127 | +203 | +154 | +172 | +178 | +84 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Basel | 48 | 45 | 50 | 64 | 98 | 87 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +65 | +30 | +17 | +26 | +16 | +47 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Basel | 89 | 88 | 70 | 74 | 65 | 65 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +127 | +203 | +154 | +172 | +178 | +84 |
Cloud cover (%) Basel runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basel | 71 | 70 | 68 | 69 | 70 | 66 | 61 | 60 | 62 | 70 | 75 | 74 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -33 | -31 | -26 | -20 | -18 | -8 | -11 | -14 | -11 | -18 | -28 | -34 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Basel | 71 | 70 | 68 | 69 | 70 | 66 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -33 | -31 | -26 | -20 | -18 | -8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Basel | 61 | 60 | 62 | 70 | 75 | 74 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -11 | -14 | -11 | -18 | -28 | -34 |
Relative humidity (%) Basel runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basel | 91 | 88 | 83 | 79 | 79 | 77 | 76 | 76 | 80 | 86 | 90 | 91 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -15 | -13 | -8 | -3 | -1 | +1 | +3 | +3 | -2 | -7 | -11 | -14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Basel | 91 | 88 | 83 | 79 | 79 | 77 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -15 | -13 | -8 | -3 | -1 | +1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Basel | 76 | 76 | 80 | 86 | 90 | 91 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +3 | +3 | -2 | -7 | -11 | -14 |
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. Basel trends → · Castries trends →
Methodology & sources
Basel
Temperature & precipitation — the official 1991–2020 climate normals from a national meteorological service, measured at Basel / Binningen, 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 Basel · change Castries → · Basel page · Castries page