Last updated: March 2, 2024
The weather in Grantham, Australia, during September is characterized by an average temperature of 17°C (63°F). Highs can soar to 30°C (86°F), while lows may dip to 4°C (40°F). Typically, the humidity level in Grantham throughout September hovers around 69%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Grantham averages 11 mm (0.4 inches) of rainfall, typically over the course of 3 rainy days. The month enjoys an average of 11 hours 55 minutes of daylight, with the sun shining for approximately 9 hours 50 minutes each day. Additionally, there is a 66% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Grantham reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 | 3 | 5 | 8 | 9 | 10 | 8 | 6 | 3 | 2 | 1 | 0 | 0 |
| Exposure | Low | Moderate | VeryHigh | High | Moderate | Low | |||||||
| Time to burn | 45 min | 30 min | 15 min | 25 min | 30 min | 45 min | |||||||