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August Weather in Gretna, United Kingdom

Last updated: August 27, 2025

The average temperature in Gretna, United Kingdom during August hovers around 15°C (59°F). Expect a minimum of 5°C (42°F) and a maximum of 27°C (82°F). However, don't forget your umbrella, as precipitation totals 113 mm (4.5 in) across 18 days of the month, with an average humidity level of 82%.

August Temperature in Gretna

In August in Gretna, the average temperature is 15°C (59°F). The maximum can reach 27°C (82°F) and the minimum can be as low as 5°C (42°F). This makes Gretna a great destination for travelers looking to enjoy mild weather and outdoor activities during this time of year.

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

The chart illustrates August temperature patterns in Gretna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gretna, August typically has an average temperature of 15°C (59°F), with highs reaching up to 27°C (82°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec394143465257605955504441
Data source: Temperature data for Gretna 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 Gretna

In Gretna in August, the precipitation amount is 113 mm (4.5 in), occurring over the course of 18 days.

August Precipitation Trends in Gretna

The chart displays monthly precipitation patterns in Gretna, 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 Gretna, August typically receives around 113 mm (4.5 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec731179840609587113851248797
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Gretna

In Gretna in August, humidity is 82%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.

August Average Humidity in Gretna

This chart illustrates the average monthly humidity levels in Gretna, 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 Gretna is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%85%81%83%82%82%88%90%92%89%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Gretna

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

Maximum UV Index Levels in Gretna for August

The chart shows the monthly maximum UV Index (UVI) for Gretna 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 Gretna typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568865321
Data source: Gretna 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 Gretna Compares to Other Months

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

This table compares monthly weather conditions in Gretna, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)73 mm (2.9 inches)90%low
February Weather5°C (41°F)117 mm (4.6 inches)88%low
March Weather6°C (43°F)98 mm (3.9 inches)86%moderate
April Weather8°C (46°F)40 mm (1.6 inches)85%moderate
May Weather11°C (52°F)60 mm (2.4 inches)80%high
June Weather14°C (58°F)95 mm (3.7 inches)83%very high
July Weather16°C (61°F)87 mm (3.4 inches)82%very high
August Weather15°C (59°F)113 mm (4.5 inches)82%high
September Weather13°C (55°F)85 mm (3.3 inches)88%moderate
October Weather10°C (50°F)124 mm (4.9 inches)90%moderate
November Weather7°C (45°F)87 mm (3.4 inches)92%low
December Weather5°C (41°F)97 mm (3.8 inches)89%low

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