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Niagara-on-the-Lake vs Castries

Cfa Humid subtropicalAf Tropical rainforest

Comparing Niagara-on-the-Lake change · Castries change

Bottom line

Castries is the warmer of the two — about 31°F on the annual average; Castries is the wetter, with 50 in more rain a year, and Castries the sunnier.

Warmer Castries 31°F on the year
Wetter Castries 50 in more a year
Sunnier Castries 24 pp less cloud
Colder winters Niagara-on-the-Lake 55°F colder nights

How the seasons compare

The differences between Niagara-on-the-Lake and Castries, in everyday terms.

Summers

Castries has hotter summers

Niagara-on-the-Lake: Warm
Castries: Warm

Winters

Castries has far milder winters

Niagara-on-the-Lake: Cold
Castries: Stays warm

Rain & snow

Castries is much wetter

Niagara-on-the-Lake: Moderate rainfall
Castries: Very wet

Sky

Castries is far sunnier

Niagara-on-the-Lake: Often cloudy
Castries: Fairly sunny

Month-by-month charts

Temperature

Castries is the warmer of the two — about 31°F on the annual average.

20°40°60°80° JanAprJulOct Niagara-on-the-LakeCastries

Precipitation

Castries is the wetter — about 50 in more across the year.

PRECIPITATION (in) 0612 JanAprJulOct Niagara-on-the-LakeCastries

Clear skies

Castries has the clearer skies — the higher line.

0%25%50%75%100% JanAprJulOct Niagara-on-the-LakeCastries

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
JanFebMarAprMayJunJulAugSepOctNovDec
Niagara-on-the-Lake333440516272797872594838
Castries808080828383838484838381
Difference+47+46+40+31+21+11+4+6+12+24+35+43
Jan – JunJanFebMarAprMayJun
Niagara-on-the-Lake333440516272
Castries808080828383
Difference+47+46+40+31+21+11
Jul – DecJulAugSepOctNovDec
Niagara-on-the-Lake797872594838
Castries838484838381
Difference+4+6+12+24+35+43
Avg low (°F) Castries runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Niagara-on-the-Lake222329384859666659483829
Castries787778798081818282828179
Difference+56+55+49+41+33+22+15+16+23+34+43+50
Jan – JunJanFebMarAprMayJun
Niagara-on-the-Lake222329384859
Castries787778798081
Difference+56+55+49+41+33+22
Jul – DecJulAugSepOctNovDec
Niagara-on-the-Lake666659483829
Castries818282828179
Difference+15+16+23+34+43+50
Precipitation (in) Castries runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Niagara-on-the-Lake1.81.41.72.92.63.12.42.12.62.42.11.7
Castries4.532.63.54.55.38.511.58.89.79.65.9
Difference+2.6+1.6+0.9+0.6+1.9+2.2+6.1+9.4+6.3+7.3+7.5+4.1
Jan – JunJanFebMarAprMayJun
Niagara-on-the-Lake1.81.41.72.92.63.1
Castries4.532.63.54.55.3
Difference+2.6+1.6+0.9+0.6+1.9+2.2
Jul – DecJulAugSepOctNovDec
Niagara-on-the-Lake2.42.12.62.42.11.7
Castries8.511.58.89.79.65.9
Difference+6.1+9.4+6.3+7.3+7.5+4.1
Cloud cover (%) Niagara-on-the-Lake runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Niagara-on-the-Lake787473737267636262727577
Castries383942495259504651514641
Difference-39-36-31-24-20-8-13-15-11-21-29-37
Jan – JunJanFebMarAprMayJun
Niagara-on-the-Lake787473737267
Castries383942495259
Difference-39-36-31-24-20-8
Jul – DecJulAugSepOctNovDec
Niagara-on-the-Lake636262727577
Castries504651514641
Difference-13-15-11-21-29-37
Relative humidity (%) Varies through the year
JanFebMarAprMayJunJulAugSepOctNovDec
Niagara-on-the-Lake868480787775737374788184
Castries767575767779797979797977
Difference-10-9-5-2—+3+6+6+4+1-2-7
Jan – JunJanFebMarAprMayJun
Niagara-on-the-Lake868480787775
Castries767575767779
Difference-10-9-5-2—+3
Jul – DecJulAugSepOctNovDec
Niagara-on-the-Lake737374788184
Castries797979797977
Difference+6+6+4+1-2-7

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. Niagara-on-the-Lake trends → · Castries trends →

Methodology & sources

Niagara-on-the-Lake

Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Port Weller (aut), a weather station, about 11 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 Niagara-on-the-Lake · change Castries → · Niagara-on-the-Lake page · Castries page