Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Castle Douglas features a oceanic climate (Cfb). Temperatures typically range between 5 °C (41 °F) and 15 °C (60 °F) through the year, but rarely can drop to -11 °C (12 °F) or can rise to as high as 27 °C (82 °F). The average annual precipitation amounts to about 1315 mm (51.8 inches) and receives 183 rainy days on the 1 mm (0.04 inches) threshold annually. Castle Douglas enjoys an average of 2925 hours of sunshine throughout the year, and daylight varies from 7 hours 16 minutes to 17 hours 14 minutes per day.
The warmest months in Castle Douglas are June, July and August, with daily mean temperatures ranging from 14 to 15 °C (57 - 60 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 5 °C (41 - 42 °F) throughout the day. On average each year, Castle Douglas experiences 1 days above 25 °C (77.0 °F) and 28 days below 0 °C (32.0 °F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum | 13°C (55°F) |
14°C (57°F) |
17°C (62°F) |
20°C (69°F) |
24°C (76°F) |
27°C (82°F) |
27°C (80°F) |
26°C (78°F) |
25°C (78°F) |
20°C (68°F) |
14°C (57°F) |
12°C (54°F) |
| Mean maximum | 11°C (52°F) |
12°C (53°F) |
14°C (57°F) |
17°C (62°F) |
21°C (70°F) |
23°C (73°F) |
24°C (76°F) |
23°C (73°F) |
20°C (69°F) |
16°C (62°F) |
13°C (56°F) |
12°C (53°F) |
| Average high | 7°C (44°F) |
7°C (45°F) |
9°C (48°F) |
11°C (53°F) |
14°C (58°F) |
17°C (63°F) |
19°C (66°F) |
18°C (64°F) |
16°C (60°F) |
12°C (55°F) |
9°C (49°F) |
7°C (45°F) |
| Daily mean | 5°C (41°F) |
5°C (41°F) |
6°C (43°F) |
8°C (46°F) |
11°C (52°F) |
14°C (57°F) |
15°C (60°F) |
15°C (59°F) |
13°C (55°F) |
10°C (50°F) |
7°C (45°F) |
5°C (42°F) |
| Average low | 2°C (37°F) |
3°C (37°F) |
3°C (38°F) |
4°C (40°F) |
7°C (45°F) |
10°C (51°F) |
12°C (54°F) |
12°C (54°F) |
10°C (50°F) |
7°C (46°F) |
5°C (41°F) |
3°C (38°F) |
| Mean minimum | -4°C (25°F) |
-3°C (28°F) |
-2°C (28°F) |
-1°C (30°F) |
2°C (35°F) |
6°C (43°F) |
8°C (47°F) |
7°C (46°F) |
4°C (39°F) |
-1°C (31°F) |
-1°C (30°F) |
-3°C (27°F) |
| Minimum | -11°C (12°F) |
-4°C (25°F) |
-5°C (23°F) |
-4°C (26°F) |
-0°C (32°F) |
5°C (42°F) |
7°C (45°F) |
6°C (43°F) |
1°C (34°F) |
-3°C (27°F) |
-3°C (26°F) |
-6°C (21°F) |
Compare temperature, precipitation, sunshine, UV index in Castle Douglas, Scotland, United Kingdom with other places around the world.
Castle Douglas usually has the most precipitation in February, August and October, with an average of 17 rainy days and 147 mm (5.8 inches) of precipitation per month. The driest months in Castle Douglas are January, April and May. On average, 68 mm (2.7 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 84 (3.3) | 155 (6.1) | 107 (4.2) | 50 (1.9) | 70 (2.8) | 104 (4.1) | 102 (4.0) | 137 (5.4) | 101 (4.0) | 148 (5.8) | 130 (5.1) | 126 (5.0) |
| Average precipitation days (≥ 1 mm) | 11 | 16 | 16 | 10 | 14 | 16 | 14 | 19 | 16 | 17 | 17 | 17 |
The sunniest months in Castle Douglas are May, June and July, when the sun shines an average of 12 hours 45 minutes a day. Least sunny months in Castle Douglas: January, November and December receive an average of 2 hours 48 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 71 | 134 | 194 | 322 | 396 | 379 | 397 | 347 | 282 | 211 | 111 | 75 |
| Mean daily daylight hours | 7h 51m | 9h 41m | 11h 53m | 14h 9m | 16h 9m | 17h 14m | 16h 39m | 14h 50m | 12h 39m | 10h 25m | 8h 22m | 7h 16m |
Castle Douglas experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 6 - 8, which corresponds to the High / Very High category of sun exposure. January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 1. For more detailed information, check out our hourly Castle Douglas UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 1 | 2 | 3 | 5 | 6 | 8 | 8 | 6 | 5 | 3 | 1 | 1 |
Discover in-depth weather details for every month in Castle Douglas. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Castle Douglas's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.
Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.