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August Weather in Merthyr Tydfil, United Kingdom

Last updated: August 27, 2025

The average temperature in Merthyr Tydfil, United Kingdom during August hovers around 15°C (60°F). Expect a minimum of 5°C (42°F) and a maximum of 28°C (83°F) throughout the month. Rain may grace the area, totaling 114 mm (4.5 in) over 17 days, while the average humidity sits at a comfortable 73%.

August Temperature in Merthyr Tydfil

In August in Merthyr Tydfil, the average temperature is 15°C (60°F). Maximums can reach 28°C (83°F), while minimums can be as low as 5°C (42°F). This pleasant climate offers a comfortable experience for travelers, making it an ideal time to explore Merthyr Tydfil.

August Weather in Merthyr Tydfil: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Merthyr Tydfil, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Merthyr Tydfil, August typically has an average temperature of 15°C (60°F), with highs reaching up to 28°C (83°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec404143475258615956514543
Data source: Temperature data for Merthyr Tydfil 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.

August Precipitation in Merthyr Tydfil

In Merthyr Tydfil in August, the precipitation amount is 114 mm (4.5 in) recorded over 17 days.

August Precipitation Trends in Merthyr Tydfil

The chart displays monthly precipitation patterns in Merthyr Tydfil, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Merthyr Tydfil, August typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec821241116493919311492143117144
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Merthyr Tydfil

In Merthyr Tydfil in August, humidity is 73%. With an average temperature of 15°C (60°F), this humidity feels like a warm, sticky embrace that can make traveling feel quite muggy; therefore, staying hydrated and taking breaks in shaded areas is essential to fully enjoy your adventure.

August Average Humidity in Merthyr Tydfil

This chart illustrates the average monthly humidity levels in Merthyr Tydfil, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Merthyr Tydfil is approximately 73%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Merthyr Tydfil

In Merthyr Tydfil in August, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Merthyr Tydfil.

Maximum UV Index Levels in Merthyr Tydfil for August

The chart shows the monthly maximum UV Index (UVI) for Merthyr Tydfil in August, 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 August, the maximum UV index in Merthyr Tydfil typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Merthyr Tydfil August 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 August Weather in Merthyr Tydfil Compares to Other Months

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

This table compares monthly weather conditions in Merthyr Tydfil, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)82 mm (3.2 inches)88%low
February Weather5°C (42°F)124 mm (4.9 inches)88%low
March Weather6°C (43°F)111 mm (4.4 inches)86%moderate
April Weather8°C (47°F)64 mm (2.5 inches)84%high
May Weather11°C (52°F)93 mm (3.7 inches)80%high
June Weather14°C (58°F)91 mm (3.6 inches)80%very high
July Weather16°C (61°F)93 mm (3.7 inches)70%very high
August Weather15°C (60°F)114 mm (4.5 inches)73%high
September Weather13°C (56°F)92 mm (3.6 inches)79%high
October Weather10°C (51°F)143 mm (5.6 inches)89%moderate
November Weather7°C (45°F)117 mm (4.6 inches)90%low
December Weather6°C (43°F)144 mm (5.7 inches)89%low

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