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Cairo vs Castries

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Comparing Cairo change · Castries change

Bottom line

Castries is the warmer of the two — about 5°C on the annual average; Castries is the wetter, with 1909 mm more rain a year, and Cairo the sunnier.

Warmer Castries 5°C on the year

Wetter Castries 1909 mm more a year

Sunnier Cairo 17 pp less cloud

Colder winters Cairo 16°C colder nights

How the seasons compare

The differences between Cairo and Castries, in everyday terms.

Summers

Cairo has much hotter summers

Cairo: Very hot
Castries: Warm

Winters

Castries has far milder winters

Cairo: Cool
Castries: Stays warm

Rain & snow

Castries is much wetter

Cairo: Very dry
Castries: Very wet

Sky

Cairo is sunnier

Cairo: Sunny
Castries: Fairly sunny

Month-by-month charts

Temperature

Castries is the warmer of the two — about 5°C on the annual average.

Precipitation

Castries is the wetter — about 1909 mm more across the year.

Clear skies

Cairo 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) Varies through the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cairo	19	21	24	28	32	35	35	35	33	30	25	21
Castries	27	27	27	28	28	28	28	29	29	29	28	27
Difference	+8	+6	+3	-1	-4	-6	-7	-6	-5	-1	+3	+7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cairo	19	21	24	28	32	35
Castries	27	27	27	28	28	28
Difference	+8	+6	+3	-1	-4	-6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cairo	35	35	33	30	25	21
Castries	28	29	29	29	28	27
Difference	-7	-6	-5	-1	+3	+7

Avg low (°C) Castries runs higher most of the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cairo	10	11	13	16	19	22	24	24	23	20	15	11
Castries	26	25	25	26	27	27	27	28	28	28	27	26
Difference	+16	+15	+12	+10	+8	+5	+4	+4	+5	+8	+12	+15

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cairo	10	11	13	16	19	22
Castries	26	25	25	26	27	27
Difference	+16	+15	+12	+10	+8	+5

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cairo	24	24	23	20	15	11
Castries	27	28	28	28	27	26
Difference	+4	+4	+5	+8	+12	+15

Precipitation (mm) Castries runs higher most of the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cairo	4	7	11	2	2	0	0	2	0	4	9	12
Castries	113	76	66	90	114	134	216	291	224	246	243	149
Difference	+109	+69	+55	+88	+112	+134	+216	+290	+224	+242	+233	+137

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cairo	4	7	11	2	2	0
Castries	113	76	66	90	114	134
Difference	+109	+69	+55	+88	+112	+134

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cairo	0	2	0	4	9	12
Castries	216	291	224	246	243	149
Difference	+216	+290	+224	+242	+233	+137

Cloud cover (%) Castries runs higher most of the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cairo	43	46	42	42	30	17	16	19	14	22	34	40
Castries	38	39	42	49	52	59	50	46	51	51	46	41
Difference	-4	-7	—	+7	+23	+42	+34	+28	+37	+29	+12	+1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cairo	43	46	42	42	30	17
Castries	38	39	42	49	52	59
Difference	-4	-7	—	+7	+23	+42

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cairo	16	19	14	22	34	40
Castries	50	46	51	51	46	41
Difference	+34	+28	+37	+29	+12	+1

Relative humidity (%) Castries runs higher most of the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cairo	62	57	52	44	40	40	42	45	50	55	60	63
Castries	76	75	75	76	77	79	79	79	79	79	79	77
Difference	+13	+17	+23	+32	+38	+39	+37	+34	+29	+24	+19	+14

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cairo	62	57	52	44	40	40
Castries	76	75	75	76	77	79
Difference	+13	+17	+23	+32	+38	+39

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cairo	42	45	50	55	60	63
Castries	79	79	79	79	79	77
Difference	+37	+34	+29	+24	+19	+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. Cairo trends → · Castries trends →

Methodology & sources

Cairo

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Cairo Intl, a weather station, about 16 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.

How we build these numbers →

← change Cairo · change Castries → · Cairo page · Castries page