Seirō

What is the climate like in Seirō?

The best time to visit Seirō is typically August, the year's most comfortable month (6.1/10). Seirō is warmest in August, when daily highs average 87°F (30°C), and coolest in January, when lows fall to about 33°F (1°C). The wettest month is typically December and the driest is April; the year sees roughly 92 in (2333 mm) of precipitation.

• Best time to visitAugust — the year's comfort peak (6.1/10)
• Warmest monthAugust — average high 87°F (30°C)
• Coolest monthJanuary — average low 33°F (1°C)
• Wettest monthDecember (11 in (282 mm))
• Driest monthApril (5.3 in (135 mm))
• Annual precipitation92 in (2333 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromNiigata, 13 km away (1951-2026)