Climate-Zone.com

Home › Compare › Byron Bay vs Castries

Byron Bay vs Castries

Cfa Humid subtropicalAf Tropical rainforest

Comparing Byron Bay change · Castries change

Bottom line

Castries is the warmer of the two — about 8°C on the annual average; Castries is the wetter, with 196 mm more rain a year.

Warmer Castries 8°C on the year
Wetter Castries 196 mm more a year
Sunnier Castries 6 pp less cloud
Colder winters Byron Bay 17°C colder nights

How the seasons compare

The differences between Byron Bay and Castries, in everyday terms.

Summers

Summers are nearly the same

Byron Bay: Warm
Castries: Warm

Winters

Castries has far milder winters

Byron Bay: Cool
Castries: Stays warm

Rain & snow

Castries is wetter

Byron Bay: Very wet
Castries: Very wet

Sky

Similar amounts of sun

Byron Bay: Partly 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 Byron BayCastries

Precipitation

Castries is the wetter — about 196 mm more across the year.

PRECIPITATION (mm) 0150300 JanAprJulOct Byron BayCastries

Clear skies

The two cities see a similar amount of sun.

0%25%50%75%100% JanAprJulOct Byron BayCastries

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
JanFebMarAprMayJunJulAugSepOctNovDec
Byron Bay282827252320202124252628
Castries272727282828282929292827
Difference-2-2—+2+6+8+8+7+5+4+2—
Jan – JunJanFebMarAprMayJun
Byron Bay282827252320
Castries272727282828
Difference-2-2—+2+6+8
Jul – DecJulAugSepOctNovDec
Byron Bay202124252628
Castries282929292827
Difference+8+7+5+4+2—
Avg low (°C) Castries runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Byron Bay2020181512109911141718
Castries262525262727272828282726
Difference+6+6+7+11+15+17+19+19+16+14+11+8
Jan – JunJanFebMarAprMayJun
Byron Bay202018151210
Castries262525262727
Difference+6+6+7+11+15+17
Jul – DecJulAugSepOctNovDec
Byron Bay9911141718
Castries272828282726
Difference+19+19+16+14+11+8
Precipitation (mm) Varies through the year
JanFebMarAprMayJunJulAugSepOctNovDec
Byron Bay168202209188158209111916498123146
Castries113766690114134216291224246243149
Difference-54-127-143-98-44-75+105+200+160+148+120+4
Jan – JunJanFebMarAprMayJun
Byron Bay168202209188158209
Castries113766690114134
Difference-54-127-143-98-44-75
Jul – DecJulAugSepOctNovDec
Byron Bay111916498123146
Castries216291224246243149
Difference+105+200+160+148+120+4
Cloud cover (%) Varies through the year
JanFebMarAprMayJunJulAugSepOctNovDec
Byron Bay606158545251444041515859
Castries383942495259504651514641
Difference-22-23-16-5—+8+6+6+10—-12-19
Jan – JunJanFebMarAprMayJun
Byron Bay606158545251
Castries383942495259
Difference-22-23-16-5—+8
Jul – DecJulAugSepOctNovDec
Byron Bay444041515859
Castries504651514641
Difference+6+6+10—-12-19
Relative humidity (%) Castries runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Byron Bay777776737172706971737576
Castries767575767779797979797977
Difference-1-2-1+3+6+7+9+10+7+6+4+1
Jan – JunJanFebMarAprMayJun
Byron Bay777776737172
Castries767575767779
Difference-1-2-1+3+6+7
Jul – DecJulAugSepOctNovDec
Byron Bay706971737576
Castries797979797977
Difference+9+10+7+6+4+1

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. Byron Bay trends → · Castries trends →

Methodology & sources

Byron Bay

Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Ballina Airport Aws, a weather station, about 21 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 Byron Bay · change Castries → · Byron Bay page · Castries page