nomadseason

September Weather in Yarnton, United Kingdom

Last updated: August 27, 2025

In Yarnton, United Kingdom, the average temperature in September hovers around 15°C (59°F), offering a mild climate. Expect a minimum of 3°C (37°F) and a pleasant maximum of 29°C (84°F). With 53 mm (2.1 in) of precipitation spread over 9 days, an average humidity level of 82% contributes to a refreshingly cool atmosphere. Enjoy the balance of warmth and moisture that makes September a unique time to experience this locale!

September Temperature in Yarnton

In September, in Yarnton, the average temperature is 15°C (59°F). The maximum can reach 29°C (84°F), while the minimum can drop as low as 3°C (37°F). It's a great time for travelers to enjoy mild weather and a variety of outdoor activities.

September Weather in Yarnton: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Yarnton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yarnton, September typically has an average temperature of 15°C (59°F), with highs reaching up to 29°C (84°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec404245485461646358524643
Data source: Temperature data for Yarnton generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Yarnton

In Yarnton in September, the total precipitation amount is 53 mm (2.1 in) spread over 9 days.

September Precipitation Trends in Yarnton

The chart displays monthly precipitation patterns in Yarnton, 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 Yarnton, September typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec515160386674647153955783
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Yarnton

In Yarnton 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 Yarnton

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

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

Maximum UV Index Levels in Yarnton for September

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

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

This table compares monthly weather conditions in Yarnton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)51 mm (2.0 inches)91%low
February Weather6°C (43°F)51 mm (2.0 inches)89%low
March Weather7°C (45°F)60 mm (2.4 inches)86%moderate
April Weather9°C (49°F)38 mm (1.5 inches)85%high
May Weather12°C (54°F)66 mm (2.6 inches)79%high
June Weather16°C (61°F)74 mm (2.9 inches)80%very high
July Weather18°C (65°F)64 mm (2.5 inches)71%very high
August Weather17°C (63°F)71 mm (2.8 inches)76%high
September Weather15°C (59°F)53 mm (2.1 inches)82%high
October Weather11°C (53°F)95 mm (3.7 inches)90%moderate
November Weather8°C (46°F)57 mm (2.2 inches)92%low
December Weather6°C (43°F)83 mm (3.3 inches)92%low

Compare Yarnton's Climate with Cities Worldwide