Karatsu

What is the climate like in Karatsu?

The best time to visit Karatsu is typically October – November, with trip comfort peaking in October (6.6/10). Karatsu is warmest in August, when daily highs average 86°F (30°C), and coolest in January, when lows fall to about 42°F (6°C). The wettest month is typically July and the driest is December; the year sees roughly 70 in (1779 mm) of precipitation.

• Best time to visitOctober – November — comfort peaks in October (6.6/10)
• Warmest monthAugust — average high 86°F (30°C)
• Coolest monthJanuary — average low 42°F (6°C)
• Wettest monthJuly (10 in (256 mm))
• Driest monthDecember (3.0 in (76 mm))
• Annual precipitation70 in (1779 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromSaga, 36 km away (1951-2026)