Generally, average daily wearther in Vendee during September is 16 with usual highs being around 21 and low being 15 celsius. We have put some more information here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 16 |
| High Temperature | 21 |
| Low Temperature | 15 |
| Sunshine Per Day | 9 |
Useful Links: Vendee Weather: Average Weather & Yearly Climate