Average temperature within Plymouth throughout the month of September is 13 with a high of 18 with low temperatures being around 12. The table below has further info:
| Month | Degrees Celsius |
|---|---|
| Temperature | 13 |
| High Temperature | 18 |
| Low Temperature | 12 |
| Sunshine Per Day | 6 |
Useful Links: Plymouth Weather: Average Weather & Yearly Climate