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Nairobi vs Castries

Cwb Subtropical highland (dry winter)Af Tropical rainforest

Comparing Nairobi change · Castries change

Bottom line

Castries is the warmer of the two — about 8°C on the annual average; Castries is the wetter, with 1037 mm more rain a year, and Castries the sunnier.

Warmer Castries 8°C on the year
Wetter Castries 1037 mm more a year
Sunnier Castries 15 pp less cloud
Colder winters Nairobi 14°C colder nights

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 8°C on the annual average.

0°10°20°30°40° JanAprJulOct NairobiCastries

Precipitation

Castries is the wetter — about 1037 mm more across the year.

PRECIPITATION (mm) 0150300 JanAprJulOct NairobiCastries

Clear skies

Castries has the clearer skies — the higher line.

0%25%50%75%100% JanAprJulOct NairobiCastries

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
JanFebMarAprMayJunJulAugSepOctNovDec
Nairobi272928262524232426272526
Castries272727282828282929292827
Difference—-2-1+1+3+4+5+5+3+2+3+2
Jan – JunJanFebMarAprMayJun
Nairobi272928262524
Castries272727282828
Difference—-2-1+1+3+4
Jul – DecJulAugSepOctNovDec
Nairobi232426272526
Castries282929292827
Difference+5+5+3+2+3+2
Avg low (°C) Castries runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Nairobi131415151413111212141515
Castries262525262727272828282726
Difference+12+12+11+11+12+14+16+16+16+14+12+12
Jan – JunJanFebMarAprMayJun
Nairobi131415151413
Castries262525262727
Difference+12+12+11+11+12+14
Jul – DecJulAugSepOctNovDec
Nairobi111212141515
Castries272828282726
Difference+16+16+16+14+12+12
Precipitation (mm) Castries runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Nairobi90687015113631141585021973
Castries113766690114134216291224246243149
Difference+23+7-4-61-23+103+202+276+216+197+24+76
Jan – JunJanFebMarAprMayJun
Nairobi90687015113631
Castries113766690114134
Difference+23+7-4-61-23+103
Jul – DecJulAugSepOctNovDec
Nairobi141585021973
Castries216291224246243149
Difference+202+276+216+197+24+76
Cloud cover (%) Nairobi runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Nairobi514958716869686656636957
Castries383942495259504651514641
Difference-12-10-16-22-16-10-18-20-6-12-22-17
Jan – JunJanFebMarAprMayJun
Nairobi514958716869
Castries383942495259
Difference-12-10-16-22-16-10
Jul – DecJulAugSepOctNovDec
Nairobi686656636957
Castries504651514641
Difference-18-20-6-12-22-17
Relative humidity (%) Castries runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Nairobi645963737570646259627372
Castries767575767779797979797977
Difference+11+16+12+3+2+8+15+17+20+17+6+4
Jan – JunJanFebMarAprMayJun
Nairobi645963737570
Castries767575767779
Difference+11+16+12+3+2+8
Jul – DecJulAugSepOctNovDec
Nairobi646259627372
Castries797979797977
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.

How we build these numbers →

← change Nairobi · change Castries → · Nairobi page · Castries page