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September Weather in Wilton, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Wilton, 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 Wilton

In September in Wilton, 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 Wilton: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Wilton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wilton, 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).
JanFebMarAprMayJunJulAugSepOctNovDec424346495561646359534745
Data source: Temperature data for Wilton 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 Wilton

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

September Precipitation Trends in Wilton

The chart displays monthly precipitation patterns in Wilton, 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 Wilton, September typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec5261674165795571471036494
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Wilton

In Wilton 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 Wilton

This chart illustrates the average monthly humidity levels in Wilton, 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 Wilton 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 Wilton

In Wilton 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 Wilton, you can refer to this Hourly UV Index in Wilton.

Maximum UV Index Levels in Wilton for September

The chart shows the monthly maximum UV Index (UVI) for Wilton 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 Wilton typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Wilton 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 Wilton Compares to Other Months

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

This table compares monthly weather conditions in Wilton, 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 (2.0 inches)91%low
February Weather6°C (44°F)61 mm (2.4 inches)89%low
March Weather8°C (46°F)67 mm (2.6 inches)86%moderate
April Weather9°C (49°F)41 mm (1.6 inches)85%high
May Weather13°C (55°F)65 mm (2.6 inches)79%high
June Weather16°C (61°F)79 mm (3.1 inches)80%very high
July Weather18°C (65°F)55 mm (2.1 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)64 mm (2.5 inches)92%low
December Weather7°C (45°F)94 mm (3.7 inches)92%low

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