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September Weather in Llanwrtyd Wells, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Llanwrtyd Wells, United Kingdom hovers around 13°C (55°F), making it a pleasant time to explore. However, be prepared for a range in temperature, with minimums of 1°C (33°F) and maximums reaching 27°C (81°F). Expect 105 mm (4.1 in) of precipitation spread over about 15 days, accompanied by an average humidity level of 79%.

September Temperature in Llanwrtyd Wells

In September in Llanwrtyd Wells, the average temperature is 13°C (55°F). Maximums can reach 27°C (81°F) and minimums can drop as low as 1°C (33°F). Pack accordingly for varied weather when traveling during this time!

September Weather in Llanwrtyd Wells: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Llanwrtyd Wells, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Llanwrtyd Wells, September typically has an average temperature of 13°C (55°F), with highs reaching up to 27°C (81°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec394142465157605955504442
Data source: Temperature data for Llanwrtyd Wells 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 Llanwrtyd Wells

In Llanwrtyd Wells in September, the total precipitation amount is 105 mm (4.1 in) over a span of 15 days.

September Precipitation Trends in Llanwrtyd Wells

The chart displays monthly precipitation patterns in Llanwrtyd Wells, 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 Llanwrtyd Wells, September typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec9614613268106105105132105156128160
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Llanwrtyd Wells

In Llanwrtyd Wells in September humidity is 79%. With an average temperature of 13°C (55°F), this humidity feels like a damp chill that permeates clothing, making outdoor activities slightly uncomfortable and prompting travelers to seek shelter or dress in layers to stay warm while adjusting to the moist air.

September Average Humidity in Llanwrtyd Wells

This chart illustrates the average monthly humidity levels in Llanwrtyd Wells, 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 Llanwrtyd Wells is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%80%80%70%73%79%89%90%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Llanwrtyd Wells

In Llanwrtyd Wells 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 Llanwrtyd Wells, you can refer to this Hourly UV Index in Llanwrtyd Wells.

Maximum UV Index Levels in Llanwrtyd Wells for September

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

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

This table compares monthly weather conditions in Llanwrtyd Wells, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)95 mm (3.8 inches)88%low
February Weather5°C (41°F)146 mm (5.7 inches)88%low
March Weather6°C (43°F)132 mm (5.2 inches)86%moderate
April Weather8°C (47°F)68 mm (2.7 inches)84%high
May Weather11°C (51°F)106 mm (4.2 inches)80%high
June Weather14°C (57°F)105 mm (4.1 inches)80%very high
July Weather16°C (60°F)105 mm (4.1 inches)70%very high
August Weather15°C (59°F)132 mm (5.2 inches)73%high
September Weather13°C (55°F)105 mm (4.1 inches)79%high
October Weather10°C (50°F)156 mm (6.1 inches)89%moderate
November Weather7°C (44°F)128 mm (5.1 inches)90%low
December Weather5°C (42°F)160 mm (6.3 inches)89%low

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