- Temperature
- 28–30°C
- Snowfall
- None — tropical island, no snowfall
Updated July 2026 · Sources cited: climatestotravel.com, weatherspark.com
Good to know
Good to Know
- Dry season (December–April) is the peak tourist season and best time to visit — coolest temperatures, lowest humidity, and minimal rain.
- Wet season (June–November) brings higher temperatures, increased humidity (80–84%), and frequent brief tropical downpours; September and October are the wettest months.
- Despite high annual rainfall, Castries retains good sunshine year-round — typical rainfall occurs as quick thunderstorms rather than prolonged wet weather.
- Humidity remains high throughout the year (70–84%), with lowest levels in March and highest in July.
- Strong trade winds and an 'extremely windy' climate characteristic are typical for Castries.
- February–March offers the driest conditions of the year and peak sunshine hours (around 8 hours daily).
Rainfall
- Driest Month
- February
- Driest Months
- January–April
- Wettest Months
- June–November
- Annual Total Mm
- 948
- Peak Rainfall Mm
- 133
- Rainfall Pattern
- Most rain falls as brief downpours and thunderstorms; does not significantly reduce sunshine hours
- Annual Total Inches
- 37.3
- Peak Rainfall Month
- October
- Peak Rainfall Inches
- 5.2
- Driest Month Rainfall Mm
- 36
- Driest Month Rainfall Inches
- 1.4
Snowfall
None — tropical island, no snowfall
Temperature
- Peak Warm Months
- May–October
- Off Peak Cool Months
- January–April
- Peak Warm Temp Celsius
- 30
- Peak Warm Temp Fahrenheit
- 86
- Off Peak Cool Temp Celsius
- 28
- Off Peak Cool Temp Fahrenheit
- 82
Annual Range Celsius
- Maximum
- 30
- Minimum
- 22
Annual Range Fahrenheit
- Maximum
- 86
- Minimum
- 72
Hurricane Season
- Months
- June–November
- Peak Risk Months
- September–October
Water Temperature
- Coolest Months
- February–March
- Warmest Months
- September–October
- Coolest Temp Celsius
- 26
- Warmest Temp Celsius
- 29
- Coolest Temp Fahrenheit
- 79
- Warmest Temp Fahrenheit
- 84
AI-generated estimateData refreshed July 2026
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Castries
Data last updated July 2026 · Verify anything important.