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Mont-Saint-Michel vs Castries
Comparing Mont-Saint-Michel change · Castries change
Castries is the warmer of the two — about 28°F on the annual average; Castries is the wetter, with 45 in 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 28°F on the annual average.
Precipitation
Castries is the wetter — about 45 in 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 (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 48 | 50 | 54 | 60 | 65 | 71 | 74 | 73 | 70 | 62 | 54 | 49 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +32 | +30 | +26 | +22 | +18 | +12 | +10 | +10 | +14 | +21 | +28 | +32 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 48 | 50 | 54 | 60 | 65 | 71 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Difference | +32 | +30 | +26 | +22 | +18 | +12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 74 | 73 | 70 | 62 | 54 | 49 |
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +10 | +10 | +14 | +21 | +28 | +32 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 38 | 38 | 40 | 42 | 48 | 53 | 56 | 56 | 52 | 49 | 43 | 39 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +40 | +40 | +38 | +37 | +32 | +28 | +25 | +26 | +30 | +33 | +38 | +40 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 38 | 38 | 40 | 42 | 48 | 53 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Difference | +40 | +40 | +38 | +37 | +32 | +28 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 56 | 56 | 52 | 49 | 43 | 39 |
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +25 | +26 | +30 | +33 | +38 | +40 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 3 | 2.3 | 2.2 | 2.4 | 2.6 | 2.2 | 2.5 | 2.6 | 2.3 | 3.4 | 3.4 | 3.8 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +1.5 | +0.7 | +0.4 | +1.2 | +1.9 | +3.1 | +6.1 | +8.9 | +6.6 | +6.3 | +6.2 | +2.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 3 | 2.3 | 2.2 | 2.4 | 2.6 | 2.2 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Difference | +1.5 | +0.7 | +0.4 | +1.2 | +1.9 | +3.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Mont-Saint-Michel | 2.5 | 2.6 | 2.3 | 3.4 | 3.4 | 3.8 |
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +6.1 | +8.9 | +6.6 | +6.3 | +6.2 | +2.1 |
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.
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