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September Weather in Great Barrow, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Great Barrow, United Kingdom hovers around 14°C (58°F). Expect a cool minimum of 3°C (37°F) and the occasional warm day reaching up to 28°C (82°F). During this time, prepare for 93 mm (3.7 in) of precipitation spread over 13 days, and a comfortable average humidity of 85%.

September Temperature in Great Barrow

In September in Great Barrow, the average temperature is 14°C (58°F). The maximum can reach 28°C (82°F), and the minimum can be as low as 3°C (37°F). This climate makes it an ideal time for travelers to enjoy the outdoors while experiencing a comfortable range of temperatures.

September Weather in Great Barrow: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Great Barrow, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Great Barrow, September typically has an average temperature of 14°C (58°F), with highs reaching up to 28°C (82°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec424345495460636258524743
Data source: Temperature data for Great Barrow 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 Great Barrow

In Great Barrow in September, the total precipitation amount is 93 mm (3.7 in), which falls over the course of 13 days.

September Precipitation Trends in Great Barrow

The chart displays monthly precipitation patterns in Great Barrow, 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 Great Barrow, September typically receives around 93 mm (3.7 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec6374824968919910693987793
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Great Barrow

In Great Barrow in September, humidity is 85%. With an average temperature of 14°C (58°F), this humidity feels like a thick blanket wrapping around you, making even short walks feel heavy and exhausting for traveling.

September Average Humidity in Great Barrow

This chart illustrates the average monthly humidity levels in Great Barrow, 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 Great Barrow is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%85%79%81%78%79%85%90%91%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Great Barrow

In Great Barrow 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 Great Barrow.

Maximum UV Index Levels in Great Barrow for September

The chart shows the monthly maximum UV Index (UVI) for Great Barrow 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 Great Barrow typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123578875421
Data source: Great Barrow 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 Great Barrow Compares to Other Months

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

This table compares monthly weather conditions in Great Barrow, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)63 mm (2.5 inches)89%low
February Weather6°C (43°F)74 mm (2.9 inches)88%low
March Weather7°C (45°F)82 mm (3.2 inches)86%moderate
April Weather9°C (49°F)49 mm (1.9 inches)84%moderate
May Weather12°C (54°F)68 mm (2.7 inches)79%high
June Weather16°C (60°F)91 mm (3.6 inches)81%very high
July Weather17°C (63°F)99 mm (3.9 inches)78%very high
August Weather17°C (62°F)106 mm (4.2 inches)79%high
September Weather14°C (58°F)93 mm (3.7 inches)85%moderate
October Weather11°C (53°F)98 mm (3.9 inches)90%moderate
November Weather8°C (47°F)77 mm (3.0 inches)91%low
December Weather6°C (44°F)93 mm (3.7 inches)89%low

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