Osaka Weather in May
In May, Osaka averages a high of 24°C (76°F) and a low of 15°C (59°F), from 54 years of daily records (1971–2026).
24°C
Average high
76°F
15°C
Average low
59°F
33°C
Record high
91°F · May 22, 1998
7°C
Record low
44°F · May 9, 1971
What May Is Like in Osaka
- May 2026 was the warmest May in 54 years of records, 2.3°C (4.2°F) above the long-run average.
- 5 of the 10 warmest Mays on record in Osaka have come since 2012.
- The coldest May reading, 7°C (44°F) on May 9, 1971, has not been matched in 55 years.
- May in Osaka has become 1.2°C (2.1°F) warmer on average: the 2012–2026 average against 1970–1989.
At least 1 mm of rain falls on 35% of May days, and the month averages 148 mm in total.
Warmest: 2015 (26.9°C)Latest: 2026 (26.0°C)10-year averageLong-run average (24.4°C)
Look Up a Day in May
See the weather in Osaka on any May date, year by year.
Source: NOAA GHCN-Daily, Osaka (1973–2026); Kobe (1971–2025). Averages cover 1971–2026. How we compute this