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August Weather in Castlereagh, United Kingdom

Last updated: August 27, 2025

In Castlereagh, United Kingdom, the average temperature in August hovers around 15°C (59°F). The temperature can dip to a minimum of 8°C (46°F) and soar to a maximum of 22°C (71°F). Be prepared for precipitation as well, with an average of 115 mm (4.5 in) over 19 days. Remember to dress accordingly, as the average humidity is a high 86%!

August Temperature in Castlereagh

In August in Castlereagh, the average temperature is 15°C (59°F). Maximums can reach 22°C (71°F), while minimums can drop as low as 8°C (46°F). This mild weather makes Castlereagh a comfortable destination for travelers looking to explore without the extremes of heat or cold.

August Weather in Castlereagh: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Castlereagh, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castlereagh, August typically has an average temperature of 15°C (59°F), with highs reaching up to 22°C (71°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344475257605956514744
Data source: Temperature data for Castlereagh 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 Castlereagh

In Castlereagh in August, the precipitation amount is 115 mm (4.5 in) over a span of 19 days.

August Precipitation Trends in Castlereagh

The chart displays monthly precipitation patterns in Castlereagh, 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 Castlereagh, August typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec6089804566788411575929491
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Castlereagh

In Castlereagh in August, humidity is 86%. With an average temperature of 15°C (59°F), this humidity feels like a warm, damp blanket that clings to your skin, making traveling slightly uncomfortable but still manageable if you stay hydrated and take breaks in shaded areas.

August Average Humidity in Castlereagh

This chart illustrates the average monthly humidity levels in Castlereagh, 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 Castlereagh is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%85%82%84%86%86%88%89%90%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Castlereagh

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

Maximum UV Index Levels in Castlereagh for August

The chart shows the monthly maximum UV Index (UVI) for Castlereagh 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 Castlereagh typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578865321
Data source: Castlereagh 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 Castlereagh Compares to Other Months

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

This table compares monthly weather conditions in Castlereagh, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)60 mm (2.3 inches)87%low
February Weather6°C (43°F)89 mm (3.5 inches)86%low
March Weather7°C (44°F)80 mm (3.2 inches)86%moderate
April Weather8°C (47°F)45 mm (1.8 inches)85%moderate
May Weather11°C (52°F)66 mm (2.6 inches)82%high
June Weather14°C (57°F)78 mm (3.1 inches)84%very high
July Weather15°C (60°F)84 mm (3.3 inches)86%very high
August Weather15°C (59°F)115 mm (4.5 inches)86%high
September Weather13°C (56°F)75 mm (3.0 inches)88%moderate
October Weather11°C (52°F)92 mm (3.6 inches)89%moderate
November Weather8°C (47°F)94 mm (3.7 inches)90%low
December Weather6°C (44°F)91 mm (3.6 inches)86%low

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