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September Weather in Llanddarog, United Kingdom

Last updated: August 27, 2025

In Llanddarog, United Kingdom, the average temperature in September hovers around 15°C (58°F), creating a pleasant atmosphere for outdoor activities. Expect minimums of 5°C (42°F) and highs reaching 25°C (78°F). However, don't forget your umbrella, as precipitation averages 115 mm (4.5 in) spread over 16 days, contributing to an average humidity of 79%.

September Temperature in Llanddarog

In September in Llanddarog, the average temperature is 15°C (58°F). Maximum temperatures can reach 25°C (78°F) while minimums can drop as low as 5°C (42°F). This mild climate makes Llanddarog an ideal destination for traveling, offering comfortable weather for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Llanddarog, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Llanddarog, September typically has an average temperature of 15°C (58°F), with highs reaching up to 25°C (78°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec434445485359626158544846
Data source: Temperature data for Llanddarog 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 Llanddarog

In Llanddarog in September, the precipitation amount is 115 mm (4.5 in) over a span of 16 days.

September Precipitation Trends in Llanddarog

The chart displays monthly precipitation patterns in Llanddarog, 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 Llanddarog, September typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec99136115619010091134115171151184
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Llanddarog

In Llanddarog in September, humidity is 79%. With an average temperature of 15°C (58°F), this humidity feels like a thick blanket, making traveling a bit uncomfortable due to the stickiness, but still bearable for those who enjoy mild weather.

September Average Humidity in Llanddarog

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

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

Maximum UV Index Levels in Llanddarog for September

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

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

This table compares monthly weather conditions in Llanddarog, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)99 mm (3.9 inches)88%low
February Weather7°C (44°F)136 mm (5.3 inches)88%low
March Weather7°C (45°F)115 mm (4.5 inches)86%moderate
April Weather9°C (49°F)61 mm (2.4 inches)84%high
May Weather12°C (53°F)90 mm (3.5 inches)80%high
June Weather15°C (59°F)100 mm (3.9 inches)80%very high
July Weather16°C (62°F)91 mm (3.6 inches)70%very high
August Weather16°C (61°F)134 mm (5.3 inches)73%high
September Weather15°C (58°F)115 mm (4.5 inches)79%high
October Weather12°C (54°F)171 mm (6.7 inches)89%moderate
November Weather9°C (49°F)151 mm (6.0 inches)90%low
December Weather8°C (46°F)184 mm (7.2 inches)89%low

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