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Lyon vs Castries
Comparing Lyon change · Castries change
Castries is the warmer of the two — about 26°F on the annual average; Castries is the wetter, with 43 in 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 26°F on the annual average.
Precipitation
Castries is the wetter — about 43 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lyon | 44 | 47 | 56 | 62 | 70 | 77 | 81 | 81 | 73 | 63 | 52 | 45 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +36 | +33 | +24 | +19 | +13 | +6 | +2 | +3 | +11 | +20 | +31 | +36 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Lyon | 44 | 47 | 56 | 62 | 70 | 77 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Difference | +36 | +33 | +24 | +19 | +13 | +6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Lyon | 81 | 81 | 73 | 63 | 52 | 45 |
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +2 | +3 | +11 | +20 | +31 | +36 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lyon | 34 | 34 | 40 | 45 | 52 | 59 | 62 | 62 | 55 | 49 | 41 | 35 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +44 | +43 | +38 | +34 | +28 | +22 | +19 | +20 | +27 | +32 | +40 | +44 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Lyon | 34 | 34 | 40 | 45 | 52 | 59 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Difference | +44 | +43 | +38 | +34 | +28 | +22 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Lyon | 62 | 62 | 55 | 49 | 41 | 35 |
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +19 | +20 | +27 | +32 | +40 | +44 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lyon | 2.2 | 1.9 | 2.1 | 2.9 | 3.3 | 2.8 | 2.7 | 2.8 | 3.4 | 4 | 3.6 | 2.5 |
| 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 | +2.3 | +1.1 | +0.5 | +0.7 | +1.2 | +2.5 | +5.9 | +8.7 | +5.4 | +5.7 | +5.9 | +3.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Lyon | 2.2 | 1.9 | 2.1 | 2.9 | 3.3 | 2.8 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Difference | +2.3 | +1.1 | +0.5 | +0.7 | +1.2 | +2.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Lyon | 2.7 | 2.8 | 3.4 | 4 | 3.6 | 2.5 |
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +5.9 | +8.7 | +5.4 | +5.7 | +5.9 | +3.4 |
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