Last updated: March 2, 2024
The weather in Riva, Italy, during September is characterized by an average temperature of 22°C (71°F). Highs can soar to 28°C (82°F), while lows may dip to 15°C (59°F). Typically, the humidity level in Riva throughout September hovers around 66%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Riva averages 121 mm (4.8 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 28 minutes of daylight, with the sun shining for approximately 11 hours 13 minutes each day. Additionally, there is a 58% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Riva reaches a maximum of 7, indicating a level of High exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 25 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 1 | 2 | 3 | 5 | 6 | 7 | 6 | 5 | 3 | 2 | 1 | 1 |
| Exposure | Low | Moderate | High | Moderate | Low | ||||||||
| Time to burn | 45 min | 30 min | 25 min | 30 min | 45 min | ||||||||