Normally, average daily temperatures in Ionian Islands throughout the duration of September is 21. Through the month the highs are about 28 and lows around 17. The table below has some further insights:
| Month | Degrees Celsius |
|---|---|
| Temperature | 21 |
| High Temperature | 28 |
| Low Temperature | 17 |
| Sunshine Per Day | 10 |
Useful Links: Ionian Islands Weather: Average Weather & Yearly Climate