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Mont-Saint-Michel vs Castries
Comparing Mont-Saint-Michel change · Castries change
Castries is the warmer of the two — about 15°C on the annual average; Castries is the wetter, with 1141 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Mont-Saint-Michel and Castries, in everyday terms.
Summers
Castries has much hotter summers
Mont-Saint-Michel: Mild
Castries: Warm
Winters
Castries has far milder winters
Mont-Saint-Michel: Chilly
Castries: Stays warm
Rain & snow
Castries is much wetter
Mont-Saint-Michel: Moderate rainfall
Castries: Very wet
Sky
Castries is sunnier
Mont-Saint-Michel: Often cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 15°C on the annual average.
Precipitation
Castries is the wetter — about 1141 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 9 | 10 | 12 | 15 | 18 | 21 | 23 | 23 | 21 | 17 | 12 | 9 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +18 | +17 | +14 | +12 | +10 | +7 | +5 | +6 | +8 | +12 | +16 | +18 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 9 | 10 | 12 | 15 | 18 | 21 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +18 | +17 | +14 | +12 | +10 | +7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 23 | 23 | 21 | 17 | 12 | 9 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +5 | +6 | +8 | +12 | +16 | +18 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 3 | 3 | 4 | 6 | 9 | 12 | 13 | 13 | 11 | 9 | 6 | 4 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +22 | +22 | +21 | +20 | +18 | +15 | +14 | +14 | +17 | +18 | +21 | +22 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 3 | 3 | 4 | 6 | 9 | 12 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +22 | +22 | +21 | +20 | +18 | +15 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 13 | 13 | 11 | 9 | 6 | 4 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +14 | +14 | +17 | +18 | +21 | +22 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 75 | 58 | 55 | 60 | 65 | 55 | 62 | 65 | 57 | 87 | 86 | 95 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +38 | +18 | +11 | +30 | +48 | +78 | +154 | +226 | +167 | +159 | +157 | +54 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 75 | 58 | 55 | 60 | 65 | 55 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +38 | +18 | +11 | +30 | +48 | +78 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 62 | 65 | 57 | 87 | 86 | 95 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +154 | +226 | +167 | +159 | +157 | +54 |
Cloud cover (%) Mont-Saint-Michel runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 71 | 69 | 68 | 66 | 68 | 66 | 62 | 62 | 60 | 68 | 70 | 70 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -32 | -30 | -26 | -17 | -16 | -7 | -12 | -16 | -9 | -16 | -24 | -30 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 71 | 69 | 68 | 66 | 68 | 66 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -32 | -30 | -26 | -17 | -16 | -7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 62 | 62 | 60 | 68 | 70 | 70 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -12 | -16 | -9 | -16 | -24 | -30 |
Relative humidity (%) Mont-Saint-Michel runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 92 | 89 | 84 | 81 | 79 | 78 | 78 | 78 | 80 | 86 | 91 | 93 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -16 | -14 | -10 | -5 | -2 | — | +1 | +1 | -2 | -7 | -12 | -16 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 92 | 89 | 84 | 81 | 79 | 78 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -16 | -14 | -10 | -5 | -2 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 78 | 78 | 80 | 86 | 91 | 93 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +1 | +1 | -2 | -7 | -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. Mont-Saint-Michel trends → · Castries trends →
Methodology & sources
Mont-Saint-Michel
Temperature & precipitation — 1991–2020 normals computed from 24 years of daily observations at Pontorson, a weather station, about 6 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 Mont-Saint-Michel · change Castries → · Mont-Saint-Michel page · Castries page