Daytime highs, nighttime lows and the warmest cities across Saint Lucia this September.
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 Gros Islet.
To get a sense of September's typical temperatures in the key spots of Saint Lucia, explore the map below. Click on a point for an in-depth look.
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 Saint Lucia.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Drill down to September weather for any region in Saint Lucia.
Pick a city to see its September weather averages.
Daytime temperatures in Gros Islet typically peak at 31°C (88°F) in September, putting it in the very high range.
After dark, Gros Islet cools to about 26°C (79°F) on an average September night.
Gros Islet usually sees around 238 hours of sunlight, indicating many sunny days.
We have much more information about the climate in Saint Lucia.
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