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Castries vs Monterrey

Af Tropical rainforestBSh Hot semi-arid

Comparing Castries change · Monterrey change

Bottom line

Castries is the warmer of the two — about 7°F on the annual average; Castries is the wetter, with 51 in more rain a year.

Warmer Castries 7°F on the year
Wetter Castries 51 in more a year
Sunnier About the same similar amount of sun
Colder winters Monterrey 28°F colder nights

How the seasons compare

The differences between Castries and Monterrey, in everyday terms.

Summers

Monterrey has much hotter summers

Castries: Warm
Monterrey: Very hot

Winters

Castries has far milder winters

Castries: Stays warm
Monterrey: Cool

Rain & snow

Castries is much wetter

Castries: Very wet
Monterrey: Moderate rainfall

Sky

Similar amounts of sun

Castries: Fairly sunny
Monterrey: Fairly sunny

Month-by-month charts

Temperature

Castries is the warmer of the two — about 7°F on the annual average.

40°60°80°100° JanAprJulOct CastriesMonterrey

Precipitation

Castries is the wetter — about 51 in more across the year.

PRECIPITATION (in) 0612 JanAprJulOct CastriesMonterrey

Clear skies

The two cities see a similar amount of sun.

0%25%50%75%100% JanAprJulOct CastriesMonterrey

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) Varies through the year
JanFebMarAprMayJunJulAugSepOctNovDec
Castries808080828383838484838381
Monterrey727682899296969790847672
Difference-8-4+2+7+10+13+13+14+6+1-6-10
Jan – JunJanFebMarAprMayJun
Castries808080828383
Monterrey727682899296
Difference-8-4+2+7+10+13
Jul – DecJulAugSepOctNovDec
Castries838484838381
Monterrey969790847672
Difference+13+14+6+1-6-10
Avg low (°F) Castries runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Castries787778798081818282828179
Monterrey505359657074747471655751
Difference-28-24-18-14-10-7-7-7-11-17-24-29
Jan – JunJanFebMarAprMayJun
Castries787778798081
Monterrey505359657074
Difference-28-24-18-14-10-7
Jul – DecJulAugSepOctNovDec
Castries818282828179
Monterrey747471655751
Difference-7-7-11-17-24-29
Precipitation (in) Castries runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Castries4.532.63.54.55.38.511.58.89.79.65.9
Monterrey0.80.61.11.42.32.32.92.77.82.41.40.8
Difference-3.7-2.3-1.5-2.2-2.2-2.9-5.6-8.7-1-7.3-8.2-5.1
Jan – JunJanFebMarAprMayJun
Castries4.532.63.54.55.3
Monterrey0.80.61.11.42.32.3
Difference-3.7-2.3-1.5-2.2-2.2-2.9
Jul – DecJulAugSepOctNovDec
Castries8.511.58.89.79.65.9
Monterrey2.92.77.82.41.40.8
Difference-5.6-8.7-1-7.3-8.2-5.1
Cloud cover (%) Varies through the year
JanFebMarAprMayJunJulAugSepOctNovDec
Castries383942495259504651514641
Monterrey494747494947494653414047
Difference+10+8+5—-3-11-1-1+2-11-6+6
Jan – JunJanFebMarAprMayJun
Castries383942495259
Monterrey494747494947
Difference+10+8+5—-3-11
Jul – DecJulAugSepOctNovDec
Castries504651514641
Monterrey494653414047
Difference-1-1+2-11-6+6
Relative humidity (%) Castries runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Castries767575767779797979797977
Monterrey575451485457585969676359
Difference-19-21-24-28-23-21-21-20-9-12-16-18
Jan – JunJanFebMarAprMayJun
Castries767575767779
Monterrey575451485457
Difference-19-21-24-28-23-21
Jul – DecJulAugSepOctNovDec
Castries797979797977
Monterrey585969676359
Difference-21-20-9-12-16-18

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 → · Monterrey trends →

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.

Monterrey

Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at Monterrey (obs), about 6 km from the city centre.

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 Castries · change Monterrey → · Castries page · Monterrey page