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Spiez vs Castries
Comparing Spiez change · Castries change
Castries is the warmer of the two — about 18°C on the annual average; Castries is the wetter, with 784 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Spiez and Castries, in everyday terms.
Summers
Castries has much hotter summers
Spiez: Mild
Castries: Warm
Winters
Castries has far milder winters
Spiez: Cold
Castries: Stays warm
Rain & snow
Castries is wetter
Spiez: Wet
Castries: Very wet
Sky
Castries is sunnier
Spiez: 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 784 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spiez | 3 | 5 | 11 | 15 | 19 | 22 | 24 | 24 | 19 | 14 | 8 | 4 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +24 | +21 | +16 | +13 | +9 | +6 | +4 | +5 | +10 | +15 | +20 | +24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Spiez | 3 | 5 | 11 | 15 | 19 | 22 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +24 | +21 | +16 | +13 | +9 | +6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Spiez | 24 | 24 | 19 | 14 | 8 | 4 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +4 | +5 | +10 | +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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spiez | -3 | -3 | 1 | 4 | 8 | 12 | 14 | 14 | 10 | 6 | 1 | -2 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +28 | +28 | +24 | +22 | +18 | +15 | +13 | +14 | +18 | +22 | +26 | +28 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Spiez | -3 | -3 | 1 | 4 | 8 | 12 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +28 | +28 | +24 | +22 | +18 | +15 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Spiez | 14 | 14 | 10 | 6 | 1 | -2 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +13 | +14 | +18 | +22 | +26 | +28 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spiez | 72 | 67 | 73 | 82 | 122 | 127 | 146 | 146 | 94 | 80 | 80 | 91 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +42 | +9 | -6 | +7 | -8 | +7 | +70 | +146 | +130 | +166 | +163 | +59 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Spiez | 72 | 67 | 73 | 82 | 122 | 127 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +42 | +9 | -6 | +7 | -8 | +7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Spiez | 146 | 146 | 94 | 80 | 80 | 91 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +70 | +146 | +130 | +166 | +163 | +59 |
Cloud cover (%) Spiez runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spiez | 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 |
|---|---|---|---|---|---|---|
| Spiez | 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 |
|---|---|---|---|---|---|---|
| Spiez | 59 | 59 | 61 | 66 | 71 | 71 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -10 | -12 | -10 | -15 | -25 | -31 |
Relative humidity (%) Spiez runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spiez | 86 | 86 | 87 | 84 | 81 | 78 | 77 | 78 | 81 | 83 | 87 | 86 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -10 | -11 | -13 | -8 | -3 | — | +1 | +1 | -2 | -4 | -8 | -9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Spiez | 86 | 86 | 87 | 84 | 81 | 78 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -10 | -11 | -13 | -8 | -3 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Spiez | 77 | 78 | 81 | 83 | 87 | 86 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +1 | +1 | -2 | -4 | -8 | -9 |
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. Spiez trends → · Castries trends →
Methodology & sources
Spiez
Temperature & precipitation — the official 1991–2020 climate normals from a national meteorological service, measured at Interlaken, about 14 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 Spiez · change Castries → · Spiez page · Castries page