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Castries vs Lerwick
Comparing Castries change · Lerwick change
Castries is the warmer of the two — about 20°C on the annual average; Castries is the wetter, with 774 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Castries and Lerwick, in everyday terms.
Summers
Castries has far hotter summers
Castries: Warm
Lerwick: Cool
Winters
Castries has far milder winters
Castries: Stays warm
Lerwick: Chilly
Rain & snow
Castries is wetter
Castries: Very wet
Lerwick: Wet
Sky
Castries is far sunnier
Castries: Fairly sunny
Lerwick: Often grey
Month-by-month charts
Temperature
Castries is the warmer of the two — about 20°C on the annual average.
Precipitation
Castries is the wetter — about 774 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Lerwick | 6 | 6 | 7 | 8 | 10 | 12 | 14 | 15 | 13 | 10 | 8 | 6 |
| Difference | -21 | -21 | -20 | -19 | -18 | -16 | -14 | -14 | -16 | -18 | -20 | -21 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Lerwick | 6 | 6 | 7 | 8 | 10 | 12 |
| Difference | -21 | -21 | -20 | -19 | -18 | -16 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Lerwick | 14 | 15 | 13 | 10 | 8 | 6 |
| Difference | -14 | -14 | -16 | -18 | -20 | -21 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Lerwick | 2 | 1 | 2 | 3 | 5 | 7 | 9 | 9 | 8 | 5 | 3 | 2 |
| Difference | -24 | -24 | -23 | -23 | -22 | -20 | -18 | -18 | -20 | -23 | -24 | -25 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Lerwick | 2 | 1 | 2 | 3 | 5 | 7 |
| Difference | -24 | -24 | -23 | -23 | -22 | -20 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Lerwick | 9 | 9 | 8 | 5 | 3 | 2 |
| Difference | -18 | -18 | -20 | -23 | -24 | -25 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Lerwick | 139 | 115 | 102 | 65 | 54 | 58 | 65 | 86 | 103 | 126 | 136 | 139 |
| Difference | +26 | +39 | +36 | -25 | -60 | -75 | -151 | -206 | -121 | -120 | -107 | -10 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Lerwick | 139 | 115 | 102 | 65 | 54 | 58 |
| Difference | +26 | +39 | +36 | -25 | -60 | -75 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Lerwick | 65 | 86 | 103 | 126 | 136 | 139 |
| Difference | -151 | -206 | -121 | -120 | -107 | -10 |
Cloud cover (%) Lerwick runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Lerwick | 84 | 84 | 83 | 79 | 76 | 83 | 83 | 80 | 80 | 81 | 82 | 83 |
| Difference | +45 | +45 | +41 | +30 | +24 | +24 | +34 | +34 | +29 | +29 | +36 | +43 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Lerwick | 84 | 84 | 83 | 79 | 76 | 83 |
| Difference | +45 | +45 | +41 | +30 | +24 | +24 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Lerwick | 83 | 80 | 80 | 81 | 82 | 83 |
| Difference | +34 | +34 | +29 | +29 | +36 | +43 |
Relative humidity (%) Lerwick runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Lerwick | 82 | 81 | 82 | 83 | 85 | 87 | 89 | 88 | 87 | 84 | 82 | 81 |
| Difference | +6 | +7 | +7 | +7 | +7 | +9 | +10 | +9 | +8 | +5 | +3 | +4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Lerwick | 82 | 81 | 82 | 83 | 85 | 87 |
| Difference | +6 | +7 | +7 | +7 | +7 | +9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Lerwick | 89 | 88 | 87 | 84 | 82 | 81 |
| Difference | +10 | +9 | +8 | +5 | +3 | +4 |
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. Castries trends → · Lerwick trends →
Methodology & sources
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.
Lerwick
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Lerwick, a weather station, about 3 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 Castries · change Lerwick → · Castries page · Lerwick page