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September Weather in Annan, United Kingdom

Last updated: August 27, 2025

In Annan, United Kingdom, the average temperature in September hovers around 13°C (56°F), with a chilly minimum of 1°C (35°F) and a pleasantly warm maximum of 28°C (82°F). Prepare for a bit of moisture, as 87 mm (3.4 in) of precipitation is expected over 14 days, leading to a high average humidity of 88%.

September Temperature in Annan

In September, in Annan, the average temperature is 13°C (56°F). Maximums can reach 28°C (82°F), while minimums can drop as low as 1°C (35°F). This wide range of temperatures makes Annan an ideal destination for travelers who enjoy both mild and warmer conditions.

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

The chart illustrates September temperature patterns in Annan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Annan, September typically has an average temperature of 13°C (56°F), with highs reaching up to 28°C (82°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec404143475258616055504541
Data source: Temperature data for Annan 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 Annan

In Annan in September, the precipitation amount is 87 mm (3.4 in) over a span of 14 days.

September Precipitation Trends in Annan

The chart displays monthly precipitation patterns in Annan, 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 Annan, September typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec7412196416194871178713194101
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Annan

In Annan in September, humidity is 88%. With an average temperature of 13°C (56°F), this humidity feels like a thick, warm blanket wrapping around you, making outdoor adventures sticky and challenging.

September Average Humidity in Annan

This chart illustrates the average monthly humidity levels in Annan, 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 Annan is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%85%81%83%82%82%88%90%92%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Annan

In Annan 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 Annan.

Maximum UV Index Levels in Annan for September

The chart shows the monthly maximum UV Index (UVI) for Annan 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 Annan typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568865321
Data source: Annan 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 Annan Compares to Other Months

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

This table compares monthly weather conditions in Annan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)74 mm (2.9 inches)90%low
February Weather5°C (42°F)121 mm (4.8 inches)88%low
March Weather6°C (44°F)96 mm (3.8 inches)86%moderate
April Weather8°C (47°F)41 mm (1.6 inches)85%moderate
May Weather11°C (53°F)61 mm (2.4 inches)80%high
June Weather14°C (58°F)94 mm (3.7 inches)83%very high
July Weather16°C (61°F)87 mm (3.4 inches)82%very high
August Weather15°C (60°F)117 mm (4.6 inches)82%high
September Weather13°C (56°F)87 mm (3.4 inches)88%moderate
October Weather10°C (51°F)131 mm (5.2 inches)90%moderate
November Weather7°C (45°F)94 mm (3.7 inches)92%low
December Weather5°C (42°F)101 mm (4.0 inches)89%low

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