French GuianaThe weather in September in Cayenne
It's hot in September in Cayenne with an average temperature of 33°C. Temperatures this month range from a low of 33°C to a high of 34°C. At night, you can expect temperatures between 23°C and 24°C.
September is a good month to be in Cayenne for sunny weather. You’ll have high temperatures and not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Cayenne, French Guiana. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 38°C in 2023, Cayenne reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 30°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 18°C to a highest value of 26°C.
Rainfall amount
In September, there is an average of 78 mm of precipitation, spread over 11 days. The wind speed is around 4 Bft, mostly coming from the East.
Daily weather in September for Cayenne
Click on any day in September to get detailed info about the usual weather on that day in Cayenne. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Cayenne | New York | |
|---|---|---|
| Average temperature | 33°C | 27°C |
| Max. temperature | 34°C | 31°C |
| Min. temperature | 23°C | -5°C |
| Total precipitation | 78 mm | 57 mm |
| Rainy days | 11 days | 9 days |
Start of September
The month of September starts in Cayenne with hot temps, averaging around 33°C during the day and nights around 23°C.
Mid September
By mid-September, daytime temps rise to around 34°C, with nights around 24°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Cayenne is around 34°C, while nighttime temps are about 24°C. A shower might pop up, but overall, the weather will be dry and sunny.
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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.
Check out the climate of Cayenne for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Cayenne, French Guiana. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Cayenne
Temperature in September in Cayenne over the years
Precipitation charts
These charts show the average amount of precipitation in September in Cayenne, French Guiana. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Cayenne
Total precipitation in September in Cayenne over the years
Daily UV index in September in Cayenne
This chart shows the average daily UV index in September in Cayenne, 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.
Weather experiences in September in Cayenne
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Average weather in Cayenne by month
Click on a month below to see detailed weather info for Cayenne. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.