Last updated: March 2, 2024
The weather in Grenagh, Ireland, during September is characterized by an average temperature of 13°C (57°F). Highs can soar to 21°C (70°F), while lows may dip to 4°C (40°F). Typically, the humidity level in Grenagh throughout September hovers around 85%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Grenagh averages 69 mm (2.7 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 12 hours 35 minutes of daylight, with the sun shining for approximately 9 hours 30 minutes each day. Additionally, there is a 19% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Grenagh reaches a maximum of 5, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 30 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 | 1 | 2 | 4 | 5 | 5 | 5 | 5 | 3 | 2 | 1 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||