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May Weather in Castle Douglas, United Kingdom

Last updated: August 27, 2025

In May, the average temperature in Castle Douglas, United Kingdom hovers around 11°C (52°F). Expect a range from a brisk 0°C (32°F) to a warm 24°C (76°F). During this month, precipitation totals approximately 70 mm (2.8 in) spread over 14 days, contributing to an average humidity of 80%. Be prepared for the cool, damp conditions!

May Temperature in Castle Douglas

In May in Castle Douglas, the average temperature is 11°C (52°F). Maximum can reach 24°C (76°F) and minimum can be as low as 0°C (32°F). It's advisable to pack layers to comfortably enjoy both the warmer and cooler parts of the day while exploring.

May Weather in Castle Douglas: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Castle Douglas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castle Douglas, May typically has an average temperature of 11°C (52°F), with highs reaching up to 24°C (76°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec404143465157605955504541
Data source: Temperature data for Castle Douglas 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.

May Precipitation in Castle Douglas

In Castle Douglas in May, the precipitation amount is 70 mm (2.8 in) spread over 14 days.

May Precipitation Trends in Castle Douglas

The chart displays monthly precipitation patterns in Castle Douglas, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Castle Douglas, May typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec841551075070104102137101149130126
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Castle Douglas

In Castle Douglas in May, humidity is 80%. With an average temperature of 11°C (52°F), this humidity feels like a damp blanket wrapping around you, making travel a bit uncomfortable as you navigate through the thick, languid air.

May Average Humidity in Castle Douglas

This chart illustrates the average monthly humidity levels in Castle Douglas, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Castle Douglas is approximately 80%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Castle Douglas

In Castle Douglas in May, 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 Castle Douglas, you can refer to this Hourly UV Index in Castle Douglas.

Maximum UV Index Levels in Castle Douglas for May

The chart shows the monthly maximum UV Index (UVI) for Castle Douglas in May, 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 May, the maximum UV index in Castle Douglas typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568865311
Data source: Castle Douglas May 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 May Weather in Castle Douglas Compares to Other Months

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

This table compares monthly weather conditions in Castle Douglas, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)84 mm (3.3 inches)90%low
February Weather5°C (41°F)155 mm (6.1 inches)88%low
March Weather6°C (43°F)107 mm (4.2 inches)86%moderate
April Weather8°C (46°F)50 mm (1.9 inches)85%moderate
May Weather11°C (52°F)70 mm (2.8 inches)80%high
June Weather14°C (57°F)104 mm (4.1 inches)83%very high
July Weather15°C (60°F)102 mm (4.0 inches)82%very high
August Weather15°C (59°F)137 mm (5.4 inches)82%high
September Weather13°C (55°F)101 mm (4.0 inches)88%moderate
October Weather10°C (50°F)148 mm (5.8 inches)90%moderate
November Weather7°C (45°F)130 mm (5.1 inches)92%low
December Weather5°C (42°F)126 mm (5.0 inches)89%low

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