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September Weather in Castledawson, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Castledawson, United Kingdom hovers around 13°C (56°F), with a comfortable range from a minimum of 1°C (34°F) to a maximum of 23°C (74°F). Expect 72 mm (2.8 in) of precipitation spread across approximately 15 days, and take note of the high average humidity at 88%, creating a distinctive atmosphere for the season.

September Temperature in Castledawson

In September in Castledawson, the average temperature is 13°C (56°F). The maximum can reach 23°C (74°F) and the minimum can be as low as 1°C (34°F). It's a great time to explore Castledawson, as the mild weather allows for comfortable outdoor activities and sightseeing.

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

The chart illustrates September temperature patterns in Castledawson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castledawson, September typically has an average temperature of 13°C (56°F), with highs reaching up to 23°C (74°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec414244475257605955504543
Data source: Temperature data for Castledawson 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 Castledawson

In Castledawson in September, the total precipitation amount is 72 mm (2.8 in) over the course of 15 days.

September Precipitation Trends in Castledawson

The chart displays monthly precipitation patterns in Castledawson, 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 Castledawson, September typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec5892814871868612372858584
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Castledawson

In Castledawson 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 Castledawson

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

In Castledawson 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 Castledawson.

Maximum UV Index Levels in Castledawson for September

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

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

This table compares monthly weather conditions in Castledawson, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)58 mm (2.3 inches)87%low
February Weather6°C (42°F)92 mm (3.6 inches)86%low
March Weather6°C (44°F)81 mm (3.2 inches)86%moderate
April Weather8°C (47°F)48 mm (1.9 inches)85%moderate
May Weather11°C (52°F)71 mm (2.8 inches)82%high
June Weather14°C (57°F)85 mm (3.4 inches)84%very high
July Weather15°C (60°F)86 mm (3.4 inches)86%very high
August Weather15°C (59°F)123 mm (4.8 inches)86%high
September Weather13°C (56°F)72 mm (2.8 inches)88%moderate
October Weather10°C (51°F)85 mm (3.4 inches)89%moderate
November Weather7°C (46°F)85 mm (3.3 inches)90%low
December Weather6°C (43°F)84 mm (3.3 inches)86%low

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