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Nairobi vs Castries
Comparing Nairobi change · Castries change
Castries is the warmer of the two — about 14°F on the annual average; Castries is the wetter, with 41 in more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Nairobi and Castries, in everyday terms.
Summers
Summers are nearly the same
Nairobi: Warm
Castries: Warm
Winters
Castries has far milder winters
Nairobi: Mild
Castries: Stays warm
Rain & snow
Castries is wetter
Nairobi: Moderate rainfall
Castries: Very wet
Sky
Castries is sunnier
Nairobi: Often cloudy
Castries: Fairly sunny
Month-by-month charts
Temperature
Castries is the warmer of the two — about 14°F on the annual average.
Precipitation
Castries is the wetter — about 41 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nairobi | 81 | 83 | 83 | 79 | 77 | 75 | 74 | 75 | 79 | 81 | 78 | 78 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | -1 | -3 | -2 | +2 | +5 | +8 | +9 | +9 | +5 | +3 | +5 | +3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Nairobi | 81 | 83 | 83 | 79 | 77 | 75 |
| Castries | 80 | 80 | 80 | 82 | 83 | 83 |
| Difference | -1 | -3 | -2 | +2 | +5 | +8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Nairobi | 74 | 75 | 79 | 81 | 78 | 78 |
| Castries | 83 | 84 | 84 | 83 | 83 | 81 |
| Difference | +9 | +9 | +5 | +3 | +5 | +3 |
Avg low (°F) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nairobi | 56 | 56 | 58 | 59 | 58 | 55 | 52 | 53 | 54 | 57 | 58 | 58 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +22 | +21 | +19 | +20 | +22 | +26 | +29 | +29 | +28 | +24 | +22 | +21 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Nairobi | 56 | 56 | 58 | 59 | 58 | 55 |
| Castries | 78 | 77 | 78 | 79 | 80 | 81 |
| Difference | +22 | +21 | +19 | +20 | +22 | +26 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Nairobi | 52 | 53 | 54 | 57 | 58 | 58 |
| Castries | 81 | 82 | 82 | 82 | 81 | 79 |
| Difference | +29 | +29 | +28 | +24 | +22 | +21 |
Precipitation (in) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nairobi | 3.5 | 2.7 | 2.8 | 5.9 | 5.4 | 1.2 | 0.5 | 0.6 | 0.3 | 2 | 8.6 | 2.9 |
| 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 | +0.9 | +0.3 | -0.1 | -2.4 | -0.9 | +4 | +8 | +10.9 | +8.5 | +7.7 | +0.9 | +3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Nairobi | 3.5 | 2.7 | 2.8 | 5.9 | 5.4 | 1.2 |
| Castries | 4.5 | 3 | 2.6 | 3.5 | 4.5 | 5.3 |
| Difference | +0.9 | +0.3 | -0.1 | -2.4 | -0.9 | +4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Nairobi | 0.5 | 0.6 | 0.3 | 2 | 8.6 | 2.9 |
| Castries | 8.5 | 11.5 | 8.8 | 9.7 | 9.6 | 5.9 |
| Difference | +8 | +10.9 | +8.5 | +7.7 | +0.9 | +3 |
Cloud cover (%) Nairobi runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nairobi | 51 | 49 | 58 | 71 | 68 | 69 | 68 | 66 | 56 | 63 | 69 | 57 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -12 | -10 | -16 | -22 | -16 | -10 | -18 | -20 | -6 | -12 | -22 | -17 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Nairobi | 51 | 49 | 58 | 71 | 68 | 69 |
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Difference | -12 | -10 | -16 | -22 | -16 | -10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Nairobi | 68 | 66 | 56 | 63 | 69 | 57 |
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Difference | -18 | -20 | -6 | -12 | -22 | -17 |
Relative humidity (%) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nairobi | 64 | 59 | 63 | 73 | 75 | 70 | 64 | 62 | 59 | 62 | 73 | 72 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +11 | +16 | +12 | +3 | +2 | +8 | +15 | +17 | +20 | +17 | +6 | +4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Nairobi | 64 | 59 | 63 | 73 | 75 | 70 |
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Difference | +11 | +16 | +12 | +3 | +2 | +8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Nairobi | 64 | 62 | 59 | 62 | 73 | 72 |
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Difference | +15 | +17 | +20 | +17 | +6 | +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. Nairobi trends → · Castries trends →
Nairobi is projected to shift from Cwb to Aw by the 2071–2099 window (SSP2-4.5).
Methodology & sources
Nairobi
Temperature & precipitation — 1991–2020 normals computed from 20 years of daily observations at Jomo Kenyatta Intl, a weather station, about 12 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.
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