Temperatures in September
It's cool in September in Brighton with an average temperature of 14°C. Temperatures this month range from a low of 12°C to a high of 17°C. At night, you can expect temperatures between 2°C and 5°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Brighton in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Brighton with cool temperatures, averaging around 14°C during the day and nights close to 4°C. There’s little chance of precipitation. The weather is mostly sunny and dry.
Mid-September
By mid-September, the average daytime temperature rises to around 15°C, with nights close to 4°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of September
By the end of September, the average daytime temperature in Brighton will be around 16°C, with nights close to 5°C. A shower might show up, but overall the weather will be dry and sunny.
Discover cheap trips to Brighton 
Precipitation in September
In September, there is an average of 40 mm of precipitation, spread over 10 days. The wind speed is around 5 Bft, mostly coming from the South.
The average precipitation chance is 34% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Brighton. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Brighton in September |
London | ||
|---|---|---|---|
 Average Temperature |
14°C | 20°C | |
 High Temp |
17°C | 22°C | |
| Low Temp |
12°C | 17°C | |
 Total Precipitation |
40 mm | 44 mm | |
| Rainy Days |
10 days | 8 days | |
August
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Temperature records for Brighton in September
With 28°C, Brighton hit the highest temperature in the last 10 years in September 2019. The lowest daytime temperature in this month was 3°C in 2020. The extreme night temperatures ranged from a low of -5°C to a high of 12°C.
Check out the climate of Brighton for all months and discover the best travel time
Plan your next holiday
Don’t miss the best holiday deals for Brighton and see what our partners have for you.
Daily Temperature in September in Brighton
This chart shows the average daily temperatures, both day and night, for each day in September in Brighton, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Brighton
The chart below shows the average daily precipitation in September for Brighton, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 10 days of rain in Brighton.
Daily UV Index in September in Brighton
This chart shows the average daily UV index in September in Brighton, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Brighton Over the Years
This chart shows the average temperature in September in Brighton, measured in degrees Celsius, over the past years.
Total Precipitation in September in Brighton Over the Years
This chart shows the average precipitation in September in Brighton, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Brighton
Click on a specific day in September for detailed info on the typical weather on that day in Brighton. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Brighton
Have you been to Brighton in September?
Share your weather experience in September in Brighton.
Average Weather in Brighton by Month
Click on a month below to see detailed weather info for Brighton. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
