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Bern vs Castries
Comparing Bern change · Castries change
Castries is the warmer of the two — about 18°C on the annual average; Castries is the wetter, with 940 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Bern and Castries, in everyday terms.
Summers
Castries has much hotter summers
Bern: Mild
Castries: Warm
Winters
Castries has far milder winters
Bern: Cold
Castries: Stays warm
Rain & snow
Castries is wetter
Bern: Wet
Castries: Very wet
Sky
Castries is sunnier
Bern: Often cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 18°C on the annual average.
Precipitation
Castries is the wetter — about 940 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bern | 3 | 5 | 10 | 15 | 19 | 23 | 25 | 24 | 19 | 14 | 8 | 4 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +23 | +21 | +17 | +13 | +10 | +6 | +4 | +5 | +9 | +15 | +20 | +24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bern | 3 | 5 | 10 | 15 | 19 | 23 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +23 | +21 | +17 | +13 | +10 | +6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bern | 25 | 24 | 19 | 14 | 8 | 4 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +4 | +5 | +9 | +15 | +20 | +24 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bern | -3 | -3 | 0 | 3 | 8 | 11 | 13 | 13 | 9 | 6 | 1 | -2 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +28 | +28 | +25 | +23 | +19 | +16 | +14 | +15 | +19 | +22 | +26 | +28 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bern | -3 | -3 | 0 | 3 | 8 | 11 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +28 | +28 | +25 | +23 | +19 | +16 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bern | 13 | 13 | 9 | 6 | 1 | -2 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +14 | +15 | +19 | +22 | +26 | +28 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bern | 60 | 55 | 65 | 78 | 112 | 101 | 108 | 112 | 87 | 87 | 77 | 79 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +53 | +20 | +1 | +12 | +1 | +32 | +108 | +179 | +137 | +160 | +166 | +71 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bern | 60 | 55 | 65 | 78 | 112 | 101 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +53 | +20 | +1 | +12 | +1 | +32 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bern | 108 | 112 | 87 | 87 | 77 | 79 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +108 | +179 | +137 | +160 | +166 | +71 |
Cloud cover (%) Bern runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bern | 68 | 69 | 68 | 69 | 72 | 65 | 59 | 59 | 61 | 66 | 71 | 71 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -30 | -30 | -27 | -20 | -20 | -7 | -10 | -12 | -10 | -15 | -25 | -31 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bern | 68 | 69 | 68 | 69 | 72 | 65 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -30 | -30 | -27 | -20 | -20 | -7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bern | 59 | 59 | 61 | 66 | 71 | 71 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -10 | -12 | -10 | -15 | -25 | -31 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bern | 84 | 83 | 80 | 78 | 78 | 77 | 76 | 75 | 78 | 82 | 85 | 84 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -8 | -8 | -6 | -2 | -1 | +1 | +3 | +4 | — | -2 | -6 | -7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Bern | 84 | 83 | 80 | 78 | 78 | 77 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -8 | -8 | -6 | -2 | -1 | +1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Bern | 76 | 75 | 78 | 82 | 85 | 84 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +3 | +4 | — | -2 | -6 | -7 |
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. Bern trends → · Castries trends →
Methodology & sources
Bern
Temperature & precipitation — the official 1991–2020 climate normals from a national meteorological service, measured at Bern / Zollikofen, about 5 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 Bern · change Castries → · Bern page · Castries page