Normally the average weather in Cascais through the month of September is 20. High temperatures are around 27 with lows of 18. Discover more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 20 |
| High Temperature | 27 |
| Low Temperature | 18 |
| Sunshine Per Day | 9 |
Useful Links: Cascais Weather: Average Weather & Yearly Climate