Cayenne in september: average Weather, Temperature and Climate
Weather in Cayenne in september 2025
The weather in Cayenne in the month of september comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather UV index: 7
Weather at 6am
77°F
Partly Cloudy
49% of time
22%
17%
9%
Weather at 12pm
90°F
Clear/Sunny
66% of time
18%
16%
1%
Weather at 6pm
85°F
Clear/Sunny
60% of time
24%
13%
5%
Weather at 3am
77°F
47%
26%
18%
6%
Evolution of daily average temperature and precipitation in Cayenne in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Cayenne in september.
The climate of Cayenne in september is good
the weather in Cayenne in september is relatively dry (with 2.4in of precipitation over 4 days). The weather is better from the previous month since in august it receives an average of 5.9in of rainfall over 10 days.
The climate is very warm here the month of september. The thermometer averaged maximum of 90°F. The minimum is 77°F. Thus, the mean temperature average on this month of september in Cayenne is 85°F. These temperatures are far removed from those records observed in Cayenne in the month of september with a maximum record of 94°F in 2016 and a minimum record of 72°F in 2009. You can hope to have 86°F or more for all the month.
On average, in Cayenne, the days of september last 12:08. Sunrise is at 06:20 and sunset is at 18:28.
With a correct weather, the month of september is okay (but not good) to go in Cayenne in French Guiana.
Seasonal average climate and temperature of Cayenne in september
Check below seasonal norms These statistics are compiled from the weather statements of the past years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 85°F | ||||
| Highest temperature | 90°F | ||||
| Lowest temperature | 77°F | ||||
| Highest record temperature | 94°F (2016) | ||||
| Lowest record temperature | 72°F (2009) | ||||
| Number of days at +86°F | 29 day(s) (97%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 84°F | ||||
| Lowest sea temperature | 81°F | ||||
| Highest sea temperature | 86°F | ||||
| Wind | |||||
| Wind speed | 15km/h | ||||
| Wind temperature | 77°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 2.4in | ||||
| Number of days with rainfall | 4 day(s) (13%) | ||||
| Record daily rainfall | 1in (2020) | ||||
| Other climate data | |||||
| Humidity | 90% | ||||
| Visibility | 9.73km | ||||
| Cloud cover | 27% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:20 | ||||
| Time of sunset | 18:28 | ||||
| Length of day | 12:08 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Cayenne in september 2024:
76°F to 90°F
77°F to 90°F
76°F to 90°F
76°F to 92°F
77°F to 92°F
77°F to 90°F
76°F to 90°F
76°F to 90°F
76°F to 92°F
76°F to 90°F
74°F to 90°F
76°F to 90°F
76°F to 90°F
76°F to 90°F
76°F to 90°F
76°F to 90°F
77°F to 90°F
76°F to 92°F
77°F to 92°F
79°F to 90°F
77°F to 90°F
77°F to 90°F
79°F to 90°F
74°F to 92°F
81°F to 90°F
79°F to 92°F
81°F to 92°F
79°F to 92°F
79°F to 92°F
81°F to 92°F
Map: other cities in French Guyana in september
Cities near Cayenne:
| Rémire-Montjoly in september | good weather |
| Macouria in september | good weather |
| Roura in september | good weather |
| Kourou in september | good weather |
| Montagne des Singes in september | good weather |
| Cacao in september | good weather |
| Îles du Salut in september | good weather |
| Régina in september | good weather |
| Sinnamary in september | good weather |
| Ouanary in september | good weather |
| Iracoubo in september | good weather |
| Saint George de l’Oyapock in september | good weather |
Click over cities on the map for information about the weather in september.
Cayenne
perfect weather
good
tolerable
bad
very bad
Weather data for Cayenne in september:
Weather data for Cayenne for september are derived from an average of the weather forecast since 2009 in Cayenne. There is a margin of error and these forecasts are to be considered as general information only. The weather in Cayenne can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Cayenne.