Climate almanac
Onna
Okinawa, Japan · 26.50°, 127.85°
What is the climate like in Onna?
The best time to visit Onna is typically October, the year's most comfortable month (6.5/10). Onna is warmest in August, when daily highs average 84°F (29°C), and coolest in January, when lows fall to about 63°F (17°C). The wettest month is typically June and the driest is February; the year sees roughly 79 in (2008 mm) of precipitation.
- Best time to visitOctober — the year's comfort peak (6.5/10)
- Warmest monthAugust — average high 84°F (29°C)
- Coolest monthJanuary — average low 63°F (17°C)
- Wettest monthJune (11 in (274 mm))
- Driest monthFebruary (3.9 in (100 mm))
- Annual precipitation79 in (2008 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromNago, 16 km away (1976-2026)