Castle Douglas weather
The Castle Douglas weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Castle Douglas, Dumfries and Galloway, Scotland in 2026/2027.
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Castle Douglas weather averages
Check the Castle Douglas weather averages for each month of the year including maximum daytime and minimum night-time temperatures, monthly rainfall, number of days with rain and average daily hours of sunshine for Castle Douglas, Dumfries and Galloway, Scotland.
Castle Douglas weather by month
Check the weather for Castle Douglas, Dumfries and Galloway, Scotland for a particular month by selecting from the list below. This gives the best indication of what to expect from the weather months in advance.
Castle Douglas weather in January
The average maximum daytime temperature in Castle Douglas in January is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 1 hours of sunshine a day in Castle Douglas during January.
- 6°C max day temperature
6 - 1 hour of sunshine per day
1 - 21 days with some rainfall
21 - 1°C min night temperature
1 - 231 mm of monthly rainfall
231
On average 231 mm (9.1 inches) of rain normally falls in Castle Douglas during January with rain falling on 21 days of the month.
Castle Douglas weather in February
The average maximum daytime temperature in Castle Douglas in February is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 2 hours of sunshine a day in Castle Douglas during February.
- 6°C max day temperature6
- 2 hours of sunshine per day
2 - 17 days with some rainfall
17 - 1°C min night temperature1
- 161 mm of monthly rainfall
161
On average 161 mm (6.3 inches) of rain normally falls in Castle Douglas during February with rain falling on 17 days of the month.
Castle Douglas weather in March
The average maximum daytime temperature in Castle Douglas in March is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 3 hours of sunshine a day in Castle Douglas during March.
- 8°C max day temperature
8 - 3 hours of sunshine per day
3 - 19 days with some rainfall19
- 2°C min night temperature2
- 179 mm of monthly rainfall179
On average 179 mm (7 inches) of rain normally falls in Castle Douglas during March with rain falling on 19 days of the month.
Castle Douglas weather in April
The average maximum daytime temperature in Castle Douglas in April is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 5 hours of sunshine a day in Castle Douglas during April.
- 11°C max day temperature11
- 5 hours of sunshine per day
5 - 16 days with some rainfall16
- 3°C min night temperature3
- 105 mm of monthly rainfall
105
On average 105 mm (4.1 inches) of rain normally falls in Castle Douglas during April with rain falling on 16 days of the month.
Castle Douglas weather in May
The average maximum daytime temperature in Castle Douglas in May is a comfortable 15°C (59°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 6 hours of sunshine a day in Castle Douglas during May.
- 15°C max day temperature
15 - 6 hours of sunshine per day
6 - 15 days with some rainfall
15 - 6°C min night temperature6
- 95 mm of monthly rainfall
95
On average 95 mm (3.7 inches) of rain normally falls in Castle Douglas during May with rain falling on 15 days of the month.
Castle Douglas weather in June
The average maximum daytime temperature in Castle Douglas in June is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 6 hours of sunshine a day in Castle Douglas during June.
- 17°C max day temperature17
- 6 hours of sunshine per day6
- 15 days with some rainfall15
- 9°C min night temperature9
- 106 mm of monthly rainfall106
On average 106 mm (4.2 inches) of rain normally falls in Castle Douglas during June with rain falling on 15 days of the month.
Castle Douglas weather in July
The average maximum daytime temperature in Castle Douglas in July is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 5 hours of sunshine a day in Castle Douglas during July.
- 19°C max day temperature
19 - 5 hours of sunshine per day5
- 15 days with some rainfall15
- 11°C min night temperature11
- 113 mm of monthly rainfall113
On average 113 mm (4.4 inches) of rain normally falls in Castle Douglas during July with rain falling on 15 days of the month.
Castle Douglas weather in August
The average maximum daytime temperature in Castle Douglas in August is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 5 hours of sunshine a day in Castle Douglas during August.
- 18°C max day temperature18
- 5 hours of sunshine per day5
- 16 days with some rainfall16
- 11°C min night temperature11
- 139 mm of monthly rainfall
139
On average 139 mm (5.5 inches) of rain normally falls in Castle Douglas during August with rain falling on 16 days of the month.
Castle Douglas weather in September
The average maximum daytime temperature in Castle Douglas in September is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 4 hours of sunshine a day in Castle Douglas during September.
- 16°C max day temperature16
- 4 hours of sunshine per day
4 - 17 days with some rainfall17
- 9°C min night temperature9
- 170 mm of monthly rainfall170
On average 170 mm (6.7 inches) of rain normally falls in Castle Douglas during September with rain falling on 17 days of the month.
Castle Douglas weather in October
The average maximum daytime temperature in Castle Douglas in October is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 3 hours of sunshine a day in Castle Douglas during October.
- 12°C max day temperature
12 - 3 hours of sunshine per day3
- 19 days with some rainfall19
- 6°C min night temperature6
- 230 mm of monthly rainfall230
On average 230 mm (9.1 inches) of rain normally falls in Castle Douglas during October with rain falling on 19 days of the month.
Castle Douglas weather in November
The average maximum daytime temperature in Castle Douglas in November is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Castle Douglas during November.
- 9°C max day temperature9
- 2 hours of sunshine per day2
- 20 days with some rainfall20
- 3°C min night temperature3
- 225 mm of monthly rainfall225
On average 225 mm (8.9 inches) of rain normally falls in Castle Douglas during November with rain falling on 20 days of the month.
Castle Douglas weather in December
The average maximum daytime temperature in Castle Douglas in December is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 1 hours of sunshine a day in Castle Douglas during December.
- 7°C max day temperature7
- 1 hour of sunshine per day1
- 21 days with some rainfall21
- 2°C min night temperature2
- 251 mm of monthly rainfall
251
On average 251 mm (9.9 inches) of rain normally falls in Castle Douglas during December with rain falling on 21 days of the month.