Isle of Arran

What is the climate like in Isle of Arran?

The best time to visit Isle of Arran is typically May, the year's most comfortable month (5.5/10). Isle of Arran is warmest in August, when daily highs average 60°F (15°C), and coolest in February, when lows fall to about 42°F (6°C). The wettest month is typically December and the driest is April; the year sees roughly 61 in (1537 mm) of precipitation.

• Best time to visitMay — the year's comfort peak (5.5/10)
• Warmest monthAugust — average high 60°F (15°C)
• Coolest monthFebruary — average low 42°F (6°C)
• Wettest monthDecember (7.2 in (182 mm))
• Driest monthApril (2.6 in (67 mm))
• Annual precipitation61 in (1537 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromAuchincruive, 42 km away (1959-2026)