Last updated: March 2, 2024
The weather in Heyan, China, during September is characterized by an average temperature of 22°C (73°F). Highs can soar to 33°C (91°F), while lows may dip to 15°C (60°F). Typically, the humidity level in Heyan throughout September hovers around 77%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Heyan averages 167 mm (6.6 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 12 hours 19 minutes of daylight, with the sun shining for approximately 7 hours 57 minutes each day. Additionally, there is a 42% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Heyan reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 10 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 | 2 | 4 | 6 | 9 | 11 | 11 | 10 | 7 | 4 | 2 | 1 | 0 |
| Exposure | Low | Moderate | High | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | ||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | ||||