Climate almanac
Saikai
Nagasaki, Japan · 32.98°, 129.68°
What is the climate like in Saikai?
The best time to visit Saikai is typically October, the year's most comfortable month (6.6/10). Saikai is warmest in August, when daily highs average 85°F (30°C), and coolest in January, when lows fall to about 44°F (6°C). The wettest month is typically June and the driest is December; the year sees roughly 81 in (2060 mm) of precipitation.
- Best time to visitOctober — the year's comfort peak (6.6/10)
- Warmest monthAugust — average high 85°F (30°C)
- Coolest monthJanuary — average low 44°F (6°C)
- Wettest monthJune (13 in (325 mm))
- Driest monthDecember (2.9 in (74 mm))
- Annual precipitation81 in (2060 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromSasebo Reg Met Hq, 21 km away (1952-2026)