Temperatures in September
It's pleasantly warm in September in East Sussex with an average temperature of 20°C. Temperatures this month range from a low of 18°C to a high of 22°C. At night, you can expect temperatures between 9°C and 14°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for East Sussex 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 East Sussex with mild temperatures, averaging around 21°C during the day and nights close to 13°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-September
By mid-September, the average daytime temperature stays the same at 21°C, with nights close to 13°C. Not much precipitation expected during this period. It’s mostly dry with sunshine.
End of September
By the end of September, the average daytime temperature in East Sussex will be around 19°C, with nights close to 11°C. A shower might show up, but overall the weather will be dry and sunny.
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Precipitation in September
In September, there is an average of 48 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the South.
The average precipitation chance is 29% 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 East Sussex. 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.
East Sussex in September |
London | ||
|---|---|---|---|
 Average Temperature |
20°C | 20°C | |
 High Temp |
22°C | 22°C | |
| Low Temp |
18°C | 17°C | |
 Total Precipitation |
48 mm | 44 mm | |
| Rainy Days |
9 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.
Is September a good time to visit East Sussex?
Want nice weather? Then September is a great time to be in East Sussex. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for East Sussex in September
With 30°C, East Sussex hit the highest temperature in the last 10 years in September 2023. The lowest daytime temperature in this month was 12°C in 2018. The extreme night temperatures ranged from a low of 3°C to a high of 18°C.
Check out the climate of East Sussex for all months and discover the best travel time
Curious about the climate in other parts of England? Check out the weather and climate in places like London, Edinburgh, Cornwall, or have a look at other destinations in England.
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Daily Temperature in September in East Sussex
This chart shows the average daily temperatures, both day and night, for each day in September in East Sussex, 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 East Sussex
The chart below shows the average daily precipitation in September for East Sussex, 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 9 days of rain in East Sussex.
Daily UV Index in September in East Sussex
This chart shows the average daily UV index in September in East Sussex, 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 East Sussex Over the Years
This chart shows the average temperature in September in East Sussex, measured in degrees Celsius, over the past years.
Total Precipitation in September in East Sussex Over the Years
This chart shows the average precipitation in September in East Sussex, 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 East Sussex
Click on a specific day in September for detailed info on the typical weather on that day in East Sussex. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in East Sussex
Have you been to East Sussex in September?
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Average Weather in East Sussex by Month
Click on a month below to see detailed weather info for East Sussex. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of East Sussex for all months at once
