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September Weather in Calne, United Kingdom

Last updated: August 27, 2025

In Calne, United Kingdom, the average temperature in September hovers around 14°C (58°F). Expect chilly nights with minimums dropping to 2°C (37°F), while daytime highs can reach a comfortable 28°C (84°F). Be prepared for some rain, as 52 mm (2.1 in) of precipitation typically falls over 9 days. The air is often quite moist, with an average humidity of 82%.

September Temperature in Calne

In September in Calne, the average temperature is 14°C (58°F). Maximums can reach 28°C (84°F), while minimums can drop to as low as 2°C (37°F). This makes it a great time for travelers to enjoy a variety of outdoor activities, as the weather is generally mild and pleasant.

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

The chart illustrates September temperature patterns in Calne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Calne, September typically has an average temperature of 14°C (58°F), with highs reaching up to 28°C (84°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec414345485460646258524643
Data source: Temperature data for Calne 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 Calne

In Calne in September, the total precipitation amount is 52 mm (2.1 in) over the course of 9 days.

September Precipitation Trends in Calne

The chart displays monthly precipitation patterns in Calne, 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 Calne, September typically receives around 52 mm (2.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec5662694574726374521036289
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Calne

In Calne in September, humidity is 82%. With an average temperature of 14°C (58°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and sticky.

September Average Humidity in Calne

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

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

Maximum UV Index Levels in Calne for September

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

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

This table compares monthly weather conditions in Calne, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)56 mm (2.2 inches)91%low
February Weather6°C (43°F)62 mm (2.4 inches)89%low
March Weather7°C (45°F)69 mm (2.7 inches)86%moderate
April Weather9°C (49°F)45 mm (1.8 inches)85%moderate
May Weather12°C (54°F)74 mm (2.9 inches)79%high
June Weather16°C (61°F)72 mm (2.8 inches)80%very high
July Weather18°C (64°F)63 mm (2.5 inches)71%very high
August Weather17°C (62°F)74 mm (2.9 inches)76%high
September Weather14°C (58°F)52 mm (2.1 inches)82%high
October Weather11°C (53°F)103 mm (4.0 inches)90%moderate
November Weather8°C (46°F)62 mm (2.4 inches)92%low
December Weather6°C (44°F)89 mm (3.5 inches)92%low

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