Saint LuciaAverage weather for Castries in September
It's hot in September in Castries with an average temperature of 32°C. Temperatures this month range from a low of 31°C to a high of 32°C. At night, you can expect temperatures between 25°C and 27°C.
Start of September
The month of September starts in Castries with hot temps, averaging around 32°C during the day and nights around 27°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid September
By mid-September, daytime temps stay steady at around 32°C, with nights around 26°C. There’s a high chance of precipitation during this time. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of September
By the end of September, the average daytime temperature in Castries is around 32°C, while nighttime temps are about 26°C. There’s a significant chance of many days with precipitation. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In September, there is an average of 230 mm of precipitation, spread over 17 days. The wind speed is around 4 Bft, mostly coming from the East.
Castries in September |
New York | ||
|---|---|---|---|
 Average temperature |
32°C | 27°C | |
 Max. temperature |
32°C | 31°C | |
| Min. temperature |
31°C | -5°C | |
 Total precipitation |
230 mm | 57 mm | |
| Rainy days |
17 days | 9 days | |
August
UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Castries?
Looking for sun? September isn’t a good month to be in Castries. The temperature is nice, but there’s too much chance of rain.
The hurricane season in Castries runs from June to November.
Temperature records
With 34°C in 2023, Castries reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 27°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 22°C to a highest value of 28°C.
Check out the climate of Castries for all months and discover the best travel time
Daily Temperature in September in Castries
This chart shows the average daily high and low temperatures in September for Castries, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Castries
The chart below shows the average daily precipitation in September for Castries, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 17 days of precipitation in Castries.
Daily UV index in September in Castries
This chart shows the average daily UV index in September in Castries, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Castries over the years
This chart shows the average temperature in September in Castries, measured in degrees Celsius, over the past few years.
Total precipitation in September in Castries over the years
This chart shows the average precipitation in September in Castries, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Castries
Click on any day in September to get detailed info about the usual weather on that day in Castries. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Castries
Have you been to Castries in September?
Share your weather experience in September in Castries.
Average weather in Castries by month
Click on a month below to see detailed weather info for Castries. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
