Osaka weather in September

In September, Osaka has an average high of 29.5°C (85°F) and an average low of 21.9°C (71°F). Expect about 10 rainy days (153 mm, 6.0 in of rain for the month). Daytime highs are 4.2°C cooler than in August.

Average high29.5°C / 85°F
Average low21.9°C / 71°F
Daily average25.2°C / 77°F
Rain153 mm / 6.0 in
Rainy days (1 mm or more)10 days
Sunshine162 hours in the month
Days of 30°C (86°F) or more14 days
Nights of 25°C (77°F) or more4 nights

Averages for 1991–2020 at the Japan Meteorological Agency's Osaka weather station. Individual years vary.

What's in bloom in September

No cherry blossoms, plum blossoms or autumn colors are usually out in Osaka in September. Coming up in November: autumn colors.

What to wear

Light summer clothes. Bring a small umbrella; showers are common.

Osaka month by month

← August ·All 12 months ·October →

Other cities in September

CityHigh / lowRainy days
Tokyo28° / 20°C11
Kyoto29° / 21°C10
Nara29° / 20°C10
Hiroshima29° / 21°C9
Fukuoka29° / 22°C10
Nagoya29° / 21°C11
Sendai25° / 18°C11
Sapporo23° / 15°C10
Naha31° / 26°C12

See Japan weather in September for all regions.

Source: Japan Meteorological Agency climate normals 1991–2020 and phenological observations (processed by Japan Bloom Calendar). Not a forecast.