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September Weather in Culmore, United Kingdom

Last updated: August 27, 2025

In Culmore, United Kingdom, the average temperature in September hovers around 13°C (55°F). Expect a minimum of 2°C (36°F) and a pleasant maximum of 24°C (75°F). With 85 mm (3.4 in) of precipitation spread across 17 days, you might want to keep an umbrella handy. Additionally, the humidity is quite high, averaging a cozy 88%.

September Temperature in Culmore

In September in Culmore, the average temperature is 13°C (55°F). The maximum can reach 24°C (75°F), and the minimum can be as low as 2°C (36°F). Packing layers would be ideal for travelers, as you can experience both warm and cool temperatures throughout the day.

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

The chart illustrates September temperature patterns in Culmore, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Culmore, September typically has an average temperature of 13°C (55°F), with highs reaching up to 24°C (75°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec424243475256595855504643
Data source: Temperature data for Culmore 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 Culmore

In Culmore in September, the total precipitation amount is 85 mm (3.4 in), spread over 17 days.

September Precipitation Trends in Culmore

The chart displays monthly precipitation patterns in Culmore, 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 Culmore, September typically receives around 85 mm (3.4 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec6910695588195911348510294101
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Culmore

In Culmore in September humidity is 88%. With an average temperature of 13°C (55°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers while exploring, as the moisture in the air can lead to a rather uncomfortable experience for traveling.

September Average Humidity in Culmore

This chart illustrates the average monthly humidity levels in Culmore, 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 Culmore is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%85%82%84%86%86%88%89%90%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Culmore

In Culmore 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 Culmore.

Maximum UV Index Levels in Culmore for September

The chart shows the monthly maximum UV Index (UVI) for Culmore 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 Culmore typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124568875321
Data source: Culmore 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 Culmore Compares to Other Months

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

This table compares monthly weather conditions in Culmore, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)69 mm (2.7 inches)87%low
February Weather6°C (42°F)106 mm (4.2 inches)86%low
March Weather6°C (44°F)95 mm (3.7 inches)86%moderate
April Weather8°C (47°F)58 mm (2.3 inches)85%moderate
May Weather11°C (52°F)81 mm (3.2 inches)82%high
June Weather13°C (56°F)95 mm (3.7 inches)84%very high
July Weather15°C (59°F)91 mm (3.6 inches)86%very high
August Weather15°C (58°F)134 mm (5.3 inches)86%high
September Weather13°C (55°F)85 mm (3.4 inches)88%moderate
October Weather10°C (51°F)102 mm (4.0 inches)89%moderate
November Weather8°C (46°F)94 mm (3.7 inches)90%low
December Weather6°C (43°F)101 mm (4.0 inches)86%low

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