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Lyon vs Castries
Comparing Lyon change · Castries change
Castries is the warmer of the two — about 14°C on the annual average; Castries is the wetter, with 1098 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Lyon and Castries, in everyday terms.
Summers
Summers are nearly the same
Lyon: Warm
Castries: Warm
Winters
Castries has far milder winters
Lyon: Chilly
Castries: Stays warm
Rain & snow
Castries is much wetter
Lyon: Moderate rainfall
Castries: Very wet
Sky
Castries is sunnier
Lyon: Partly cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 14°C on the annual average.
Precipitation
Castries is the wetter — about 1098 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lyon | 7 | 8 | 13 | 17 | 21 | 25 | 27 | 27 | 23 | 17 | 11 | 7 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +20 | +18 | +14 | +11 | +7 | +3 | +1 | +1 | +6 | +11 | +17 | +20 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Lyon | 7 | 8 | 13 | 17 | 21 | 25 |
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Difference | +20 | +18 | +14 | +11 | +7 | +3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Lyon | 27 | 27 | 23 | 17 | 11 | 7 |
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Difference | +1 | +1 | +6 | +11 | +17 | +20 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lyon | 1 | 1 | 4 | 7 | 11 | 15 | 17 | 16 | 13 | 10 | 5 | 2 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +24 | +24 | +21 | +19 | +16 | +12 | +11 | +11 | +15 | +18 | +22 | +24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Lyon | 1 | 1 | 4 | 7 | 11 | 15 |
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Difference | +24 | +24 | +21 | +19 | +16 | +12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Lyon | 17 | 16 | 13 | 10 | 5 | 2 |
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Difference | +11 | +11 | +15 | +18 | +22 | +24 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lyon | 55 | 47 | 54 | 72 | 83 | 71 | 67 | 71 | 87 | 101 | 92 | 63 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +58 | +29 | +12 | +17 | +31 | +63 | +149 | +221 | +137 | +145 | +150 | +86 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Lyon | 55 | 47 | 54 | 72 | 83 | 71 |
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Difference | +58 | +29 | +12 | +17 | +31 | +63 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Lyon | 67 | 71 | 87 | 101 | 92 | 63 |
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Difference | +149 | +221 | +137 | +145 | +150 | +86 |
Cloud cover (%) Lyon runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lyon | 66 | 64 | 62 | 63 | 66 | 58 | 50 | 51 | 55 | 65 | 70 | 68 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -27 | -26 | -20 | -14 | -13 | +1 | — | -4 | -5 | -14 | -23 | -27 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Lyon | 66 | 64 | 62 | 63 | 66 | 58 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -27 | -26 | -20 | -14 | -13 | +1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Lyon | 50 | 51 | 55 | 65 | 70 | 68 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | — | -4 | -5 | -14 | -23 | -27 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lyon | 90 | 86 | 81 | 77 | 76 | 72 | 66 | 65 | 72 | 81 | 88 | 90 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | -14 | -11 | -6 | -1 | +2 | +7 | +13 | +14 | +7 | -2 | -9 | -14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Lyon | 90 | 86 | 81 | 77 | 76 | 72 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | -14 | -11 | -6 | -1 | +2 | +7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Lyon | 66 | 65 | 72 | 81 | 88 | 90 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +13 | +14 | +7 | -2 | -9 | -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. Lyon trends → · Castries trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
Methodology & sources
Lyon
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Lyon - ST Exupery, a weather station, about 18 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 Lyon · change Castries → · Lyon page · Castries page