Normal weather in Brentwood in September
The weather in Brentwood in September has an average temperature of around 20°C during the day. On average, September sees 39 mm of rain in Brentwood. The wind speed is 4 Beaufort and mainly comes from South.
After August, September in Brentwood starts with a temperature of 21°C and ends around October at 18°C.
September averages for Brentwood
 Average temperature | 20°C |
 Highest daytime temperature | 22°C |
| Lowest daytime temperature | 18°C |
 Total rainfall | 39 mm |
| Rainy days | 11 days |
Temperature per day in September in Brentwood
This graph shows the average daily maximum temperatures in September in Brentwood, indicated in degrees Celsius.
Precipitation per day in September in Brentwood
This graph shows the average daily precipitation in September in Brentwood, indicated in millimeters.
UV index per day in September in Brentwood
This graph shows the average daily UV index in September in Brentwood.
Yearly temperature in September in Brentwood
This graph shows the average yearly temperature in September in Brentwood, measured in degrees Celsius, over the past years.
Yearly total precipitation in September in Brentwood
This graph shows the average yearly precipitation in millimeters in September in Brentwood, over the past years.
Average daily weather in September
Click on a day to get more information about the average weather on that day.
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Average weather in Brentwood per month
Click on a month below to see in detail how the weather typically is in Brentwood and what to expect. Based on the historical weather data of Brentwood, you can view the average temperature, precipitation, wind, and UV index for each day of the month.