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September Weather in East Dean, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in East Dean, United Kingdom hovers around 15°C (59°F), with a minimum dipping to 3°C (37°F) and a max reaching up to 28°C (82°F). Expect 47 mm (1.9 in) of precipitation spread across approximately 9 days, while the air stays humid at an average of 82%.

September Temperature in East Dean

In September in East Dean, the average temperature is 15°C (59°F). Maximums can reach 28°C (82°F) and minimums can be as low as 3°C (37°F). This makes it an ideal time for travelers seeking mild weather and comfortable conditions for outdoor activities.

September Weather in East Dean: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in East Dean, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In East Dean, September typically has an average temperature of 15°C (59°F), with highs reaching up to 28°C (82°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec414346495561656359534744
Data source: Temperature data for East Dean generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in East Dean

In East Dean in September, the precipitation amount is 47 mm (1.9 in) spread over a period of 9 days.

September Precipitation Trends in East Dean

The chart displays monthly precipitation patterns in East Dean, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In East Dean, September typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec5260673970835871471036593
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in East Dean

In East Dean in September, humidity is 82%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.

September Average Humidity in East Dean

This chart illustrates the average monthly humidity levels in East Dean, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in East Dean is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%79%81%71%76%82%91%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in East Dean

In East Dean in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in East Dean, you can refer to this Hourly UV Index in East Dean.

Maximum UV Index Levels in East Dean for September

The chart shows the monthly maximum UV Index (UVI) for East Dean in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in East Dean typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: East Dean September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in East Dean Compares to Other Months

Weather in East Dean varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in East Dean, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in East Dean, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)52 mm (2.1 inches)91%low
February Weather6°C (44°F)60 mm (2.4 inches)89%low
March Weather8°C (46°F)67 mm (2.6 inches)86%moderate
April Weather10°C (49°F)39 mm (1.5 inches)85%high
May Weather13°C (55°F)70 mm (2.8 inches)79%high
June Weather16°C (61°F)83 mm (3.3 inches)80%very high
July Weather18°C (65°F)58 mm (2.3 inches)71%very high
August Weather17°C (63°F)71 mm (2.8 inches)76%high
September Weather15°C (59°F)47 mm (1.9 inches)82%high
October Weather12°C (54°F)103 mm (4.1 inches)90%moderate
November Weather8°C (47°F)65 mm (2.6 inches)92%low
December Weather7°C (45°F)93 mm (3.7 inches)92%low

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