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Amman vs Castries

BSh Hot semi-aridAf Tropical rainforest

Comparing Amman change · Castries change

Bottom line

Castries is the warmer of the two — about 9°C on the annual average; Castries is the wetter, with 1669 mm more rain a year, and Amman the sunnier.

Warmer Castries 9°C on the year

Wetter Castries 1669 mm more a year

Sunnier Amman 14 pp less cloud

Colder winters Amman 21°C colder nights

How the seasons compare

The differences between Amman and Castries, in everyday terms.

Summers

Amman has much hotter summers

Amman: Hot
Castries: Warm

Winters

Castries has far milder winters

Amman: Chilly
Castries: Stays warm

Rain & snow

Castries is much wetter

Amman: Fairly dry
Castries: Very wet

Sky

Amman is sunnier

Amman: Fairly sunny
Castries: Fairly sunny

Month-by-month charts

Temperature

Castries is the warmer of the two — about 9°C on the annual average.

Precipitation

Castries is the wetter — about 1669 mm more across the year.

Clear skies

Amman 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
Amman	13	14	18	23	28	31	33	33	31	27	20	15
Castries	27	27	27	28	28	28	28	29	29	29	28	27
Difference	+14	+12	+9	+4	—	-3	-4	-4	-2	+1	+8	+13

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Amman	13	14	18	23	28	31
Castries	27	27	27	28	28	28
Difference	+14	+12	+9	+4	—	-3

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Amman	33	33	31	27	20	15
Castries	28	29	29	29	28	27
Difference	-4	-4	-2	+1	+8	+13

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Amman	4	5	8	11	15	18	21	21	19	15	10	6
Castries	26	25	25	26	27	27	27	28	28	28	27	26
Difference	+21	+20	+18	+15	+12	+9	+7	+7	+9	+12	+17	+20

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Amman	4	5	8	11	15	18
Castries	26	25	25	26	27	27
Difference	+21	+20	+18	+15	+12	+9

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Amman	21	21	19	15	10	6
Castries	27	28	28	28	27	26
Difference	+7	+7	+9	+12	+17	+20

Precipitation (mm) Castries runs higher most of the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Amman	65	49	45	14	14	2	1	12	5	15	32	40
Castries	113	76	66	90	114	134	216	291	224	246	243	149
Difference	+48	+27	+22	+76	+100	+132	+215	+279	+219	+232	+211	+109

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Amman	65	49	45	14	14	2
Castries	113	76	66	90	114	134
Difference	+48	+27	+22	+76	+100	+132

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Amman	1	12	5	15	32	40
Castries	216	291	224	246	243	149
Difference	+215	+279	+219	+232	+211	+109

Cloud cover (%) Varies through the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Amman	54	53	48	44	34	15	13	11	15	27	40	49
Castries	38	39	42	49	52	59	50	46	51	51	46	41
Difference	-15	-14	-6	+6	+18	+44	+37	+35	+36	+24	+7	-8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Amman	54	53	48	44	34	15
Castries	38	39	42	49	52	59
Difference	-15	-14	-6	+6	+18	+44

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Amman	13	11	15	27	40	49
Castries	50	46	51	51	46	41
Difference	+37	+35	+36	+24	+7	-8

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Amman	70	67	62	53	45	43	45	49	50	50	56	66
Castries	76	75	75	76	77	79	79	79	79	79	79	77
Difference	+5	+8	+13	+24	+33	+35	+33	+30	+29	+30	+23	+11

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Amman	70	67	62	53	45	43
Castries	76	75	75	76	77	79
Difference	+5	+8	+13	+24	+33	+35

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Amman	45	49	50	50	56	66
Castries	79	79	79	79	79	77
Difference	+33	+30	+29	+30	+23	+11

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. Amman trends → · Castries trends →

Methodology & sources

Amman

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Marka Intl, 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.

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 Amman · change Castries → · Amman page · Castries page