nomadseason

September Weather in Horsted Keynes, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Horsted Keynes, United Kingdom hovers around 15°C (59°F), with a comfortable range that dips to a cool 2°C (37°F) and peaks at a warm 27°C (81°F). Be prepared for some rain, as 53 mm (2.1 in) of precipitation may fall over the course of 10 days. You'll also experience a high average humidity of 80%, making for a rich and vibrant atmosphere.

September Temperature in Horsted Keynes

In September in Horsted Keynes, the average temperature is 15°C (59°F). Maximum temperatures can reach 27°C (81°F), while minimums can drop as low as 2°C (37°F). It's a great time for travelers to enjoy mild weather and explore outdoor activities, so be sure to pack layers to accommodate the temperature fluctuations!

September Weather in Horsted Keynes: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Horsted Keynes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Horsted Keynes, September typically has an average temperature of 15°C (59°F), with highs reaching up to 27°C (81°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec414346495561646359544744
Data source: Temperature data for Horsted Keynes 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 Horsted Keynes

In Horsted Keynes in September, the precipitation amount is 53 mm (2.1 in) spread over a duration of 10 days.

September Precipitation Trends in Horsted Keynes

The chart displays monthly precipitation patterns in Horsted Keynes, 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 Horsted Keynes, September typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec5760573565715870539267102
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Horsted Keynes

In Horsted Keynes in September, humidity is 80%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making outdoor activities slightly uncomfortable and necessitating frequent breaks to stay hydrated.

September Average Humidity in Horsted Keynes

This chart illustrates the average monthly humidity levels in Horsted Keynes, 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 Horsted Keynes is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%82%81%76%73%80%89%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Horsted Keynes

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

Maximum UV Index Levels in Horsted Keynes for September

The chart shows the monthly maximum UV Index (UVI) for Horsted Keynes 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 Horsted Keynes typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578876421
Data source: Horsted Keynes 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 Horsted Keynes Compares to Other Months

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

This table compares monthly weather conditions in Horsted Keynes, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)57 mm (2.2 inches)91%low
February Weather6°C (43°F)60 mm (2.3 inches)89%low
March Weather8°C (46°F)57 mm (2.2 inches)86%moderate
April Weather9°C (49°F)35 mm (1.4 inches)85%moderate
May Weather13°C (55°F)65 mm (2.6 inches)82%high
June Weather16°C (61°F)71 mm (2.8 inches)81%very high
July Weather18°C (65°F)58 mm (2.3 inches)76%very high
August Weather17°C (64°F)70 mm (2.7 inches)73%high
September Weather15°C (59°F)53 mm (2.1 inches)80%high
October Weather12°C (54°F)92 mm (3.6 inches)89%moderate
November Weather8°C (47°F)67 mm (2.7 inches)92%low
December Weather7°C (44°F)102 mm (4.0 inches)92%low

Compare Horsted Keynes's Climate with Cities Worldwide