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September Weather in Newcastleton, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Newcastleton, United Kingdom hovers around 12°C (54°F). Visitors can expect a range of conditions, with minimum temperatures dipping to 0°C (33°F) and highs reaching a pleasant 26°C (80°F). Rainfall is frequent, with an average precipitation of 76 mm (3.0 in) spread over 14 days, contributing to the region's high humidity of 88%.

September Temperature in Newcastleton

In September in Newcastleton, the average temperature is 12°C (54°F). Maximum temperatures can reach 26°C (80°F), while minimums can drop as low as 0°C (33°F). This weather makes Newcastleton a great destination for travelers seeking mild temperatures and the chance to experience both warm and cool days.

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

The chart illustrates September temperature patterns in Newcastleton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Newcastleton, September typically has an average temperature of 12°C (54°F), with highs reaching up to 26°C (80°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec383941455056595854484339
Data source: Temperature data for Newcastleton 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 Newcastleton

In Newcastleton in September, the precipitation amount is 76 mm (3.0 in) spread over 14 days.

September Precipitation Trends in Newcastleton

The chart displays monthly precipitation patterns in Newcastleton, 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 Newcastleton, September typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec6711510140629594116761208391
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Newcastleton

In Newcastleton in September, humidity is 88%. With an average temperature of 12°C (54°F), this humidity feels like a thick, damp blanket, making traveling a bit uncomfortable as the air clings to your skin, causing you to sweat even in cooler weather.

September Average Humidity in Newcastleton

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

In Newcastleton 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 Newcastleton.

Maximum UV Index Levels in Newcastleton for September

The chart shows the monthly maximum UV Index (UVI) for Newcastleton 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 Newcastleton typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124568865321
Data source: Newcastleton 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 Newcastleton Compares to Other Months

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

This table compares monthly weather conditions in Newcastleton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)67 mm (2.6 inches)90%low
February Weather4°C (39°F)114 mm (4.5 inches)88%low
March Weather5°C (42°F)101 mm (4.0 inches)86%moderate
April Weather7°C (45°F)40 mm (1.6 inches)85%moderate
May Weather10°C (51°F)62 mm (2.5 inches)80%high
June Weather13°C (56°F)95 mm (3.8 inches)83%very high
July Weather15°C (59°F)93 mm (3.7 inches)82%very high
August Weather14°C (58°F)116 mm (4.6 inches)82%high
September Weather12°C (54°F)76 mm (3.0 inches)88%moderate
October Weather9°C (49°F)120 mm (4.7 inches)90%moderate
November Weather6°C (43°F)83 mm (3.3 inches)92%low
December Weather4°C (40°F)91 mm (3.6 inches)89%low

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