Last updated: March 2, 2024
The weather in Mountain River, Australia, during September is characterized by an average temperature of 10°C (50°F). Highs can soar to 21°C (70°F), while lows may dip to 2°C (36°F). Typically, the humidity level in Mountain River throughout September hovers around 82%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Mountain River averages 54 mm (2.1 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 11 hours 48 minutes of daylight, with the sun shining for approximately 8 hours 18 minutes each day. Additionally, there is a 38% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Mountain River reaches a maximum of 6, indicating a level of High exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, 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 | 2 | 3 | 5 | 6 | 6 | 5 | 4 | 3 | 2 | 1 | 1 | 0 |
| Exposure | Low | Moderate | High | Moderate | Low | ||||||||
| Time to burn | 45 min | 30 min | 25 min | 30 min | 45 min | ||||||||