Osaka Weather in May – Average Temperature and Rainfall
- High
- 23.1°
- Low
- 14.4°
- Rainfall
- 189 mm
- Rainy season
- 12d
- max
- 29.0°
- min
- 6.1°
May
- Early
- 21.5° 55.3 mm
- Mid
- 23.5° 66.8 mm
- Late
- 24.3° 67.0 mm
Summary
The climate figures for Osaka are averaged from 2016–2025 observations (10 years). Annual rainfall averages about 1,733 mm.
The rainy season runs March–October. The wettest month is July with 240.9 mm across 16 rain days; the driest is January at just 50 mm.
The hottest month is August (average high 32.8°C) and the coolest is January (9.1°C).
The most comfortable time to visit Osaka is January — less rain and milder heat.
Monthly averages
Common questions
Will it rain in Osaka today?
Yes. Rain is expected around 07:00–09:00, totalling roughly 0.6 mm.
How hot is it in Osaka today?
Between 23°C and 26°C, with a felt maximum of 29°C.
What is the weather in Osaka tomorrow?
Tomorrow: overcast, 21–29°C, with a 0% chance of rain.