Cayenne Weather in September

What's the weather like in Cayenne, French Guiana in September 2019?

The climate in Cayenne during September can be summarized as hot, humid and reasonably dry.

September is in the fall / autumn in Cayenne and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (90°F), whilst at night 23°C (73°F) is normal.

Cayenne weather averages (imperial / metric)
Daytime temperature 32.3°C 90.1°F
Nightly temperature 22.7°C 72.9°F
Average temperature 27.5°C 81.5°F
Daily sunshine 8.8 hrs
Avg rainfall 41 mm 1.6 ins
Rainy days 4 days
Sea temperature 28.3°C 82.9°F
Humidity 83%
Windspeed 6.1kph 4 mph

On average September is the driest month of the year in Cayenne with around 41mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.8 hours of sunshine per day.

September temperatures in Cayenne

September rainfall

September hourly sunshine

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in September 2019.

Other monthly averages

UV index

Cayenne weather stats

Cayenne weather statistics
Hottest month: September 32.1°C 89.8°F
Driest month: September 41mm 1.6ins
Sunniest month: October 8.9hrs
Coldest month: January 28.6°C 83.5°F
Wettest month: May 544mm 21.4ins
Map showing location of Cayenne (4.93333, -52.33333)

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