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Dinan vs Castries
Comparing Dinan change · Castries change
Castries is the warmer of the two — about 15°C on the annual average; Castries is the wetter, with 1382 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Dinan and Castries, in everyday terms.
Summers
Castries has much hotter summers
Dinan: Mild
Castries: Warm
Winters
Castries has far milder winters
Dinan: Chilly
Castries: Stays warm
Rain & snow
Castries is much wetter
Dinan: Moderate rainfall
Castries: Very wet
Sky
Castries is sunnier
Dinan: 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 1382 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dinan | 9 | 10 | 12 | 14 | 17 | 20 | 22 | 22 | 20 | 16 | 12 | 10 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +18 | +17 | +15 | +13 | +11 | +8 | +6 | +7 | +9 | +12 | +16 | +18 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Dinan | 9 | 10 | 12 | 14 | 17 | 20 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +18 | +17 | +15 | +13 | +11 | +8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Dinan | 22 | 22 | 20 | 16 | 12 | 10 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +6 | +7 | +9 | +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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dinan | 4 | 4 | 5 | 6 | 9 | 12 | 13 | 13 | 12 | 9 | 6 | 4 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +22 | +22 | +21 | +20 | +18 | +16 | +14 | +14 | +16 | +18 | +21 | +22 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Dinan | 4 | 4 | 5 | 6 | 9 | 12 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +22 | +22 | +21 | +20 | +18 | +16 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Dinan | 13 | 13 | 12 | 9 | 6 | 4 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +14 | +14 | +16 | +18 | +21 | +22 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dinan | 48 | 48 | 38 | 41 | 47 | 42 | 34 | 46 | 40 | 59 | 70 | 65 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +65 | +27 | +28 | +49 | +66 | +92 | +182 | +246 | +184 | +187 | +172 | +84 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Dinan | 48 | 48 | 38 | 41 | 47 | 42 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +65 | +27 | +28 | +49 | +66 | +92 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Dinan | 34 | 46 | 40 | 59 | 70 | 65 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +182 | +246 | +184 | +187 | +172 | +84 |
Cloud cover (%) Dinan runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dinan | 73 | 72 | 69 | 66 | 66 | 64 | 62 | 62 | 60 | 68 | 71 | 71 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -34 | -33 | -27 | -16 | -14 | -5 | -12 | -16 | -9 | -16 | -24 | -31 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Dinan | 73 | 72 | 69 | 66 | 66 | 64 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -34 | -33 | -27 | -16 | -14 | -5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Dinan | 62 | 62 | 60 | 68 | 71 | 71 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -12 | -16 | -9 | -16 | -24 | -31 |
Relative humidity (%) Dinan runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dinan | 90 | 87 | 84 | 81 | 80 | 79 | 78 | 78 | 80 | 85 | 89 | 91 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -15 | -13 | -9 | -5 | -2 | — | — | — | -1 | -6 | -10 | -14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Dinan | 90 | 87 | 84 | 81 | 80 | 79 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -15 | -13 | -9 | -5 | -2 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Dinan | 78 | 78 | 80 | 85 | 89 | 91 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | — | — | -1 | -6 | -10 | -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. Dinan trends → · Castries trends →
Methodology & sources
Dinan
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Dinard Pleurtuit Saint Malo, a weather station, about 15 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 Dinan · change Castries → · Dinan page · Castries page