Usually the average weather in St Austell right through the month of May is 10. You can expect a high of 14 degrees celsius with a low of 9. The table below has some further insights:
| Month | Degrees Celsius |
|---|---|
| Temperature | 10 |
| High Temperature | 14 |
| Low Temperature | 9 |
Useful Links: St Austell Weather: Average Weather & Yearly Climate