Last updated: March 2, 2024
The weather in Brighton, United Kingdom, during September is characterized by an average temperature of 16°C (62°F). Highs can soar to 21°C (69°F), while lows may dip to 11°C (52°F). Typically, the humidity level in Brighton throughout September hovers around 82%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Brighton averages 63 mm (2.5 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 12 hours 34 minutes of daylight, with the sun shining for approximately 10 hours 48 minutes each day. Additionally, there is a 37% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Brighton 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 | ||||||||||