Normally weather temperatures in St Austell throughout the month of September is 13. Average highs are typically 17 and typical average low being around 12 degrees. We have put some more details below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 13 |
| High Temperature | 17 |
| Low Temperature | 12 |
Useful Links: St Austell Weather: Average Weather & Yearly Climate