Last updated: March 2, 2024
The weather in Sainte-Helene-sur-Isere, France, during September is characterized by an average temperature of 12°C (55°F). Highs can soar to 23°C (74°F), while lows may dip to 1°C (34°F). Typically, the humidity level in Sainte-Helene-sur-Isere throughout September hovers around 73%.
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Average temperature
Maximum temperature
Humidity
In September, Sainte-Helene-sur-Isere averages 92 mm (3.6 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 12 hours 29 minutes of daylight, with the sun shining for approximately 11 hours 5 minutes each day. Additionally, there is a 36% probability of sunny days during this period.
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Chance of sun
In September, the UV Index in Sainte-Helene-sur-Isere 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 | 7 | 6 | 4 | 3 | 1 | 1 |
| Exposure | Low | Moderate | High | Moderate | Low | ||||||||
| Time to burn | 45 min | 30 min | 25 min | 30 min | 45 min | ||||||||