Castries weather in September (Castries, Saint Lucia)

Curious about the September weather in Castries? Check out this comprehensive weather guide.

In September, Castries typically experiences very high temperatures and high rainfall. Daytime temperatures hover around 31°C, while nights can cool down to about 26°C. Remember, these are typical temperatures, and certain days could be even hotter. Ensure you wear appropriate clothing to handle the warmth.

Castries in September usually receives high rainfall, averaging around 122 mm for the month. Typically around 24 days of rainfall is expected.

With around 238 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Castries. January and February typically offer the best circumstances. While August, September, October and November tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Castries climate page with graphs.

 

Castries, monthly averages in September

Min TemperatureMin Temperature 26°C  
Max TemperatureMax Temperature 31°C  
Chance of RainChance of Rain 81%  
PrecipitationPrecipitation 122 mm  
Rainy daysRainy days 24 days  
HumidityHumidity 81% *  
SunshineSunshine 238 hours *  
Percentage SunshinePercentage Sunshine *  
* Data from: Saint Lucia, Saint Lucia (4 KM, 2 Miles).

Where to go in Saint Lucia in September

Find out more about the weather in Saint Lucia in September and which places have the best weather conditions in this month.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Castries in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming
9/10
Cycling
7/10
Walking
7/10
Camping
7/10
Outdoor sports
7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Castries.

Our site offers climate and forecast data for every country in the world. Are you going to Saint Lucia? On this website you can find historical weather averages for many cities in Saint Lucia. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.