Climate almanac

Rumoi

Hokkaido, Japan · 43.93°, 141.64°

+ Compare

What is the climate like in Rumoi?

The best time to visit Rumoi is typically September, the year's most comfortable month (6.3/10). Rumoi is warmest in August, when daily highs average 76°F (25°C), and coolest in January, when lows fall to about 17°F (-8°C). The wettest month is typically August and the driest is April; the year sees roughly 53 in (1353 mm) of precipitation.

  • Best time to visitSeptember — the year's comfort peak (6.3/10)
  • Warmest monthAugust — average high 76°F (25°C)
  • Coolest monthJanuary — average low 17°F (-8°C)
  • Wettest monthAugust (8.0 in (203 mm))
  • Driest monthApril (2.9 in (75 mm))
  • Annual precipitation53 in (1353 mm)
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
  • Records fromRumoi, 2 km away (1951-2026)