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September Weather in Alness, United Kingdom

Last updated: August 27, 2025

In Alness, United Kingdom, the average temperature in September hovers around 12°C (54°F), with lows dipping to 0°C (33°F) and highs reaching up to 24°C (75°F). Expect measurable precipitation of 88 mm (3.5 in) over approximately 15 days, contributing to a notably high average humidity of 90%. Prepare for a month that's as moist as it is mild!

September Temperature in Alness

In September, in Alness, the average temperature is 12°C (54°F). Maximum temperatures can reach 24°C (75°F), and minimums can drop as low as 0°C (33°F). Be prepared for a range of temperatures, making it essential to pack layers for your travels.

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

The chart illustrates September temperature patterns in Alness, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alness, September typically has an average temperature of 12°C (54°F), with highs reaching up to 24°C (75°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec393941455055595754484339
Data source: Temperature data for Alness 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 Alness

In Alness in September, the precipitation amount is 88 mm (3.5 in) over a span of 15 days.

September Precipitation Trends in Alness

The chart displays monthly precipitation patterns in Alness, 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 Alness, September typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec7175845280737086881129682
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Alness

In Alness in September, humidity is 90%. With an average temperature of 12°C (54°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and traveling a bit more draining than usual.

September Average Humidity in Alness

This chart illustrates the average monthly humidity levels in Alness, 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 Alness is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%82%84%86%86%90%91%92%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Alness

In Alness in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Alness.

Maximum UV Index Levels in Alness for September

The chart shows the monthly maximum UV Index (UVI) for Alness 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 Alness typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568765311
Data source: Alness 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 Alness Compares to Other Months

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

This table compares monthly weather conditions in Alness, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)71 mm (2.8 inches)89%low
February Weather4°C (39°F)75 mm (2.9 inches)88%low
March Weather5°C (42°F)84 mm (3.3 inches)86%moderate
April Weather7°C (45°F)52 mm (2.1 inches)84%moderate
May Weather10°C (50°F)80 mm (3.1 inches)82%high
June Weather13°C (56°F)73 mm (2.9 inches)84%very high
July Weather15°C (59°F)70 mm (2.8 inches)86%high
August Weather14°C (58°F)86 mm (3.4 inches)86%high
September Weather12°C (54°F)88 mm (3.5 inches)90%moderate
October Weather9°C (49°F)112 mm (4.4 inches)91%moderate
November Weather6°C (43°F)95 mm (3.8 inches)92%low
December Weather4°C (40°F)82 mm (3.2 inches)88%low

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