When planning a visit to Castries in Saint Lucia, it helps to know that temperatures typically range from 28°C (82°F) in January up to 31°C (88°F) during the peak of September. Our detailed climate overview is based on data from Soufrière, the region's most well-known city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
In Castries, especially in Soufrière, temperatures remain consistently high year-round, with average maximums never dropping below 28°C (82°F).
The peak of the heat usually falls in August, September and October.
When it comes to rainfall, Castries sees significant variations throughout the year. October tends to be the wettest, receiving 136 mm (5.4 in) of rain, while February is much drier with just 33 mm (1.3 in).
May is the sunniest period, with ideal conditions for exploring the region and all it has to offer.
