Daytime highs, nighttime lows and the warmest cities in Castries, Saint Lucia this September.
Castries, Saint Lucia, a region in Saint Lucia, typically experiences very warm weather in September, with maximum daytime temperatures around 31°C (88°F) and nighttime temperatures around 26°C (79°F) in Soufrière.
Explore the map below to discover average September temperatures at the top destinations in Castries. For a deeper dive, simply click on any destination dot.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Castries.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Daytime temperatures in Soufrière typically peak at 31°C (88°F) in September, putting it in the very high range.
After dark, Soufrière cools to about 26°C (79°F) on an average September night.
The weather is predominantly sunny, with an estimated total of around 238 hours of sunshine in Soufrière. This means many sunny days, which creates a cheerful atmosphere during this month.
We have much more information about the climate in Castries.
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