Last updated: March 2, 2024
The weather in Castel San Pietro Romano, Italy, during September is characterized by an average temperature of 19°C (67°F). Highs can soar to 29°C (85°F), while lows may dip to 9°C (48°F). Typically, the humidity level in Castel San Pietro Romano throughout September hovers around 65%.
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Humidity
In September, Castel San Pietro Romano averages 115 mm (4.5 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 12 hours 25 minutes of daylight, with the sun shining for approximately 11 hours 15 minutes each day. Additionally, there is a 50% probability of sunny days during this period.
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In September, the UV Index in Castel San Pietro Romano reaches a maximum of 8, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 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 | 4 | 6 | 7 | 8 | 7 | 5 | 4 | 2 | 1 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||