Osaka Weather in December
In December, Osaka averages a high of 12°C (54°F) and a low of 4°C (40°F), from 54 years of daily records (1971–2026).
12°C
Average high
54°F
4°C
Average low
40°F
24°C
Record high
76°F · December 4, 2018
-3°C
Record low
26°F · December 28, 1976
What December Is Like in Osaka
- December 2025 was the 4th warmest December in 54 years of records, 1.4°C (2.4°F) above the long-run average.
- The coldest December reading, -3°C (26°F) on December 28, 1976, has not been matched in 50 years.
- On average, 0.7 nights in December drop below freezing.
- December in Osaka has become 0.6°C (1.1°F) warmer on average: the 2011–2025 average against 1970–1989.
At least 1 mm of rain falls on 21% of December days, and the month averages 54 mm in total.
Warmest: 2004 (14.2°C)Latest: 2025 (13.1°C)10-year averageLong-run average (12.1°C)
Look Up a Day in December
See the weather in Osaka on any December date, year by year.
Source: NOAA GHCN-Daily, Osaka (1973–2026); Kobe (1971–2025). Averages cover 1971–2026. How we compute this