Castries Weather History
Saint Lucia · North America · Weather data 1976–today
Castries sits 1558km from the equator, 2m above sea level. That combination gives it a hot climate with one clear dry season (Tropical savanna climate). Its record high is 31.7°C, set 2023-09-18, its record low 20.1°C, set 1989-02-15.
Data through September 19, 2026.
Frequently asked questions about the weather in Castries
What is the hottest temperature ever recorded in Castries?
The highest temperature in this record for Castries is 31.7°C, measured on 2023-09-18. That is a recorded daily value from Castries's own series covering 1976 to 2025, not an estimate or a regional average.
What is the coldest temperature ever recorded in Castries?
The lowest temperature in this record for Castries is 20.1°C, measured on 1989-02-15. Together with the heat record above, that spans the full range this city has actually experienced across 1976 to 2025.
How much rain does Castries get a year?
Castries averages 787mm of precipitation a year, spread across roughly 192 days with at least 1mm. That average is taken over 50 complete calendar years, so one exceptionally wet or dry year does not set the figure.
What was the wettest day on record in Castries?
On 2010-10-30, 156.0mm fell on Castries, the highest single-day total in this series. For scale, that is roughly 20% of what the city receives in an average full year, in one day.
How many hours of sunshine does Castries get a year?
Castries averages 4096 sunshine hours a year, which works out to about 11.2 hours a day across the whole year. Sunshine hours measure the time direct sunlight actually reaches the ground, not simply how long it is light.
How warm are summers and how cold are winters in Castries?
Across the summer months Castries averages a daytime high near 28.3°C, while winter nights average 23°C. The seasons here are set from Castries's position relative to the equator rather than a fixed northern-hemisphere calendar.
What is the strongest wind recorded in Castries?
The strongest wind speed recorded in Castries is 63 km/h, on 2010-10-30. That is the daily maximum sustained wind rather than the peak gust, which typically runs higher still.
