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September Weather in Newtown, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Newtown, United Kingdom is a mild 13°C (55°F), with a minimum dipping to 1°C (34°F) and a maximum reaching 27°C (80°F). Expect 72 mm (2.8 in) of precipitation over approximately 13 days, and prepare for high humidity levels at 85%.

September Temperature in Newtown

In September in Newtown, the average temperature is 13°C (55°F). Maximums can reach 27°C (80°F), while minimums can dip as low as 1°C (34°F). This variation makes it advisable for travelers to pack layers to accommodate both warm days and chilly nights.

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

The chart illustrates September temperature patterns in Newtown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Newtown, September typically has an average temperature of 13°C (55°F), with highs reaching up to 27°C (80°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec394142465157605955504442
Data source: Temperature data for Newtown 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 Newtown

In Newtown in September, the precipitation amount is 72 mm (2.8 in) over a period of 13 days.

September Precipitation Trends in Newtown

The chart displays monthly precipitation patterns in Newtown, 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 Newtown, September typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec67949655768868867210287108
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Newtown

In Newtown in September, humidity is 85%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making even short walks feel exhausting and urging travelers to seek shade and refreshment frequently.

September Average Humidity in Newtown

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

In Newtown in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Newtown, you can refer to this Hourly UV Index in Newtown.

Maximum UV Index Levels in Newtown for September

The chart shows the monthly maximum UV Index (UVI) for Newtown 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 Newtown typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Newtown 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 Newtown Compares to Other Months

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

This table compares monthly weather conditions in Newtown, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)67 mm (2.7 inches)89%low
February Weather5°C (41°F)94 mm (3.7 inches)88%low
March Weather6°C (43°F)96 mm (3.8 inches)86%moderate
April Weather8°C (46°F)55 mm (2.2 inches)84%high
May Weather11°C (52°F)76 mm (3.0 inches)79%high
June Weather14°C (57°F)88 mm (3.5 inches)81%very high
July Weather16°C (61°F)68 mm (2.7 inches)78%very high
August Weather15°C (59°F)86 mm (3.4 inches)79%high
September Weather13°C (55°F)72 mm (2.8 inches)85%high
October Weather10°C (50°F)102 mm (4.0 inches)90%moderate
November Weather7°C (45°F)87 mm (3.4 inches)91%low
December Weather5°C (42°F)108 mm (4.2 inches)89%low

Compare Newtown's Climate with Cities Worldwide