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September Weather in Thornton Heath, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Thornton Heath, United Kingdom is a pleasant 15°C (60°F), with minimums dipping to 4°C (40°F) and maximums soaring to 28°C (83°F). You can expect precipitation of about 45 mm (1.8 in) over 9 days, contributing to an average humidity of 80%. Embrace the mild climate and prepare for scattered showers!

September Temperature in Thornton Heath

In September in Thornton Heath, the average temperature is 15°C (60°F), with maximums reaching 28°C (83°F) and minimums dropping as low as 4°C (40°F). This makes it an ideal time for travelers who enjoy mild weather and a range of outdoor activities.

September Weather in Thornton Heath: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Thornton Heath, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thornton Heath, September typically has an average temperature of 15°C (60°F), with highs reaching up to 28°C (83°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec414346495562656459544643
Data source: Temperature data for Thornton Heath 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 Thornton Heath

In Thornton Heath in September, the precipitation amount is 45 mm (1.8 in) spread over 9 days.

September Precipitation Trends in Thornton Heath

The chart displays monthly precipitation patterns in Thornton Heath, 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 Thornton Heath, September typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec545253326377647245814884
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Thornton Heath

In Thornton Heath in September humidity is 80%. With an average temperature of 15°C (60°F), this humidity feels like a warm, sticky embrace that can make even the simplest stroll feel like a workout, leaving travelers yearning for a refreshing breeze or shade to escape the weight of the air.

September Average Humidity in Thornton Heath

This chart illustrates the average monthly humidity levels in Thornton Heath, 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 Thornton Heath 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 Thornton Heath

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

Maximum UV Index Levels in Thornton Heath for September

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

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

This table compares monthly weather conditions in Thornton Heath, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)54 mm (2.1 inches)91%low
February Weather6°C (43°F)52 mm (2.0 inches)89%low
March Weather8°C (46°F)52 mm (2.1 inches)86%moderate
April Weather10°C (49°F)32 mm (1.3 inches)85%moderate
May Weather13°C (55°F)63 mm (2.5 inches)82%high
June Weather17°C (62°F)77 mm (3.0 inches)81%very high
July Weather18°C (65°F)64 mm (2.5 inches)76%very high
August Weather18°C (64°F)72 mm (2.8 inches)73%high
September Weather15°C (60°F)45 mm (1.8 inches)80%high
October Weather12°C (54°F)81 mm (3.2 inches)89%moderate
November Weather8°C (47°F)48 mm (1.9 inches)92%low
December Weather6°C (44°F)84 mm (3.3 inches)92%low

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