Average weather in Cayenne through the whole of September is 26 with a general average high of 32 and low of 23. Our table below has the full details:
| Month | Degrees Celsius |
|---|---|
| Temperature | 26 |
| High Temperature | 32 |
| Low Temperature | 23 |
| Sunshine Per Day | 9 |
Useful Links: Cayenne Weather: Average Weather & Yearly Climate