Kosai

What is the climate like in Kosai?

The best time to visit Kosai is typically October, the year's most comfortable month (6.3/10). Kosai is warmest in August, when daily highs average 91°F (33°C), and coolest in January, when lows fall to about 38°F (3°C). The wettest month is typically June and the driest is January; the year sees roughly 79 in (2013 mm) of precipitation.

• Best time to visitOctober — the year's comfort peak (6.3/10)
• Warmest monthAugust — average high 91°F (33°C)
• Coolest monthJanuary — average low 38°F (3°C)
• Wettest monthJune (12 in (299 mm))
• Driest monthJanuary (2.1 in (53 mm))
• Annual precipitation79 in (2013 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromHamamatsu, 18 km away (1951-2026)