Osaka Weather in January

In January, Osaka averages a high of 9°C (49°F) and a low of 2°C (36°F), from 55 years of daily records (1971–2026).

9°C

Average high

49°F

2°C

Average low

36°F

19°C

Record high

66°F · January 28, 2020

-4°C

Record low

25°F · January 22, 1997

What January Is Like in Osaka

January is Osaka's coldest month of the year.
January is Osaka's driest month, averaging 40 mm of rain against 193 mm in the wettest.
On average, 4.7 nights in January drop below freezing.
January in Osaka has become 0.8°C (1.4°F) warmer on average: the 2012–2026 average against 1970–1989.

At least 1 mm of rain falls on 21% of January days, and the month averages 40 mm in total.

Average daytime high in Osaka, every January since 1971

Warmest: 2020 (12.1°C)Latest: 2026 (9.2°C)10-year averageLong-run average (9.5°C)

See the weather in Osaka on any January date, year by year.

Source: NOAA GHCN-Daily, Osaka (1973–2026); Kobe (1971–2025). Averages cover 1971–2026. How we compute this