Castle Douglas Weather & Climate: Best Time to Visit

The climate in Castle Douglas experiences moderate temperature changes, with mild shifts between seasons. Typically, average maximum daytime temperatures range from a pleasant 19°C (66°F) in July to a chilly 8°C (46°F) in the coolest month, January.

Nights vary from 12°C (54°F) in July to around 3°C (37°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Castle Douglas has a notably wet climate with abundant precipitation, recording 1338 mm (53 in) of rain/snowfall per year. Castle Douglas offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month October (139 mm (5.5 in)) and the driest month May (84 mm (3.3 in)) is not too significant. For more details, please visit our Castle Douglas Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

For those who appreciate different seasons, Castle Douglas serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 5.4 hours of sunshine daily, and embrace the darker days in January, offering only 1.3 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The city experiences its highest humidity in December, reaching 90%. In May, the humidity drops to its lowest level at 70%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year