Typically, the expected weather in Croatia all through the month of September is 20 with a general average high of 25 and low being around 18 celsius. The table below includes more detail:
| Month | Degrees Celsius |
|---|---|
| Temperature | 20 |
| High Temperature | 25 |
| Low Temperature | 18 |
| Sunshine Per Day | 13 |
Useful Links: Croatia Weather: Average Weather & Yearly Climate