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Castries vs Kathmandu
Comparing Castries change · Kathmandu change
Castries is the warmer of the two — about 8°C on the annual average; Castries is the wetter, with 572 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Castries and Kathmandu, in everyday terms.
Summers
Summers are nearly the same
Castries: Warm
Kathmandu: Warm
Winters
Castries has far milder winters
Castries: Stays warm
Kathmandu: Chilly
Rain & snow
Castries is wetter
Castries: Very wet
Kathmandu: Wet
Sky
Castries is sunnier
Castries: Fairly sunny
Kathmandu: Partly cloudy
Month-by-month charts
Temperature
Castries is the warmer of the two — about 8°C on the annual average.
Precipitation
Castries is the wetter — about 572 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 |
| Kathmandu | 19 | 22 | 26 | 28 | 29 | 29 | 28 | 29 | 28 | 27 | 24 | 20 |
| Difference | -8 | -5 | -1 | +1 | +1 | +1 | — | — | -1 | -2 | -4 | -7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Kathmandu | 19 | 22 | 26 | 28 | 29 | 29 |
| Difference | -8 | -5 | -1 | +1 | +1 | +1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Kathmandu | 28 | 29 | 28 | 27 | 24 | 20 |
| Difference | — | — | -1 | -2 | -4 | -7 |
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 |
| Kathmandu | 2 | 5 | 8 | 12 | 16 | 19 | 20 | 20 | 18 | 13 | 8 | 3 |
| Difference | -23 | -21 | -17 | -14 | -11 | -8 | -7 | -8 | -9 | -15 | -19 | -23 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Kathmandu | 2 | 5 | 8 | 12 | 16 | 19 |
| Difference | -23 | -21 | -17 | -14 | -11 | -8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Kathmandu | 20 | 20 | 18 | 13 | 8 | 3 |
| Difference | -7 | -8 | -9 | -15 | -19 | -23 |
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 |
| Kathmandu | 15 | 20 | 51 | 75 | 83 | 203 | 366 | 274 | 218 | 76 | 8 | 0 |
| Difference | -98 | -55 | -15 | -14 | -31 | +70 | +150 | -18 | -6 | -170 | -235 | -149 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Kathmandu | 15 | 20 | 51 | 75 | 83 | 203 |
| Difference | -98 | -55 | -15 | -14 | -31 | +70 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Kathmandu | 366 | 274 | 218 | 76 | 8 | 0 |
| Difference | +150 | -18 | -6 | -170 | -235 | -149 |
Cloud cover (%) Kathmandu 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 |
| Kathmandu | 39 | 43 | 45 | 51 | 58 | 72 | 86 | 84 | 71 | 44 | 33 | 34 |
| Difference | +1 | +4 | +3 | +2 | +5 | +14 | +36 | +37 | +21 | -7 | -13 | -7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Kathmandu | 39 | 43 | 45 | 51 | 58 | 72 |
| Difference | +1 | +4 | +3 | +2 | +5 | +14 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Kathmandu | 86 | 84 | 71 | 44 | 33 | 34 |
| Difference | +36 | +37 | +21 | -7 | -13 | -7 |
Relative humidity (%) Castries 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 |
| Kathmandu | 43 | 39 | 33 | 32 | 45 | 64 | 82 | 86 | 84 | 69 | 55 | 46 |
| Difference | -33 | -36 | -42 | -44 | -33 | -15 | +4 | +7 | +6 | -10 | -24 | -30 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Kathmandu | 43 | 39 | 33 | 32 | 45 | 64 |
| Difference | -33 | -36 | -42 | -44 | -33 | -15 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Kathmandu | 82 | 86 | 84 | 69 | 55 | 46 |
| Difference | +4 | +7 | +6 | -10 | -24 | -30 |
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 → · Kathmandu trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
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.
Kathmandu
Temperature & precipitation — 1991–2020 normals computed from 16 years of daily observations at Kathmandu Airport, a weather station, about 5 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 Kathmandu → · Castries page · Kathmandu page