Normally, you can expect the weather in Newport Beach all through September is 21. Average high degrees are usually 27 with lows around 18 degrees.
| Month | Degrees Celsius |
|---|---|
| Temperature | 21 |
| High Temperature | 27 |
| Low Temperature | 18 |
| Sunshine Per Day | 9 |
Useful Links: Newport Beach Weather: Average Weather & Yearly Climate