Last updated: March 2, 2024
The weather in Penryn, United Kingdom, during September is characterized by an average temperature of 15°C (59°F). Highs can soar to 23°C (73°F), while lows may dip to 8°C (46°F). Typically, the humidity level in Penryn throughout September hovers around 85%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Penryn averages 60 mm (2.3 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 33 minutes of daylight, with the sun shining for approximately 10 hours 57 minutes each day. Additionally, there is a 31% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Penryn reaches a maximum of 6, 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 | 2 | 3 | 4 | 5 | 5 | 5 | 4 | 3 | 2 | 1 | 1 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||