Killarney

What is the climate like in Killarney?

The best time to visit Killarney is typically July, the year's most comfortable month (5.6/10). Killarney is warmest in July, when daily highs average 65°F (18°C), and coolest in January, when lows fall to about 37°F (3°C). The wettest month is typically October and the driest is May; the year sees roughly 52 in (1309 mm) of precipitation.

• Best time to visitJuly — the year's comfort peak (5.6/10)
• Warmest monthJuly — average high 65°F (18°C)
• Coolest monthJanuary — average low 37°F (3°C)
• Wettest monthOctober (5.4 in (137 mm))
• Driest monthMay (3.2 in (81 mm))
• Annual precipitation52 in (1309 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromValentia Observatory, 51 km away (1929-2026)