Verdict: Good month
Osaka Weather in December
December is mild-to-cool in Osaka, topping out near 11°C (52°F) — comfortable with a layer on. Rain is occasional — about 6 wet days in a typical year. Overall, December is a solid month to visit Osaka.
Average high
11°C / 52°F
Average low
3°C / 37°F
Rain days
~6
Precipitation
39 mm
What to pack for Osaka in December
- A proper warm jacket, and a hat for mornings
- Comfortable walking shoes — every guide on this site assumes you'll use them
December against the rest of the year
Warmest in Osaka: Aug (33°C / 91°F) · Coolest: Jan (9°C / 48°F) · Wettest: Jul (~17 rain days)
9°
1°
Jan
11°
2°
Feb
15°
5°
Mar
19°
10°
Apr
23°
14°
May
27°
19°
Jun
31°
24°
Jul
33°
26°
Aug
30°
23°
Sep
23°
14°
Oct
18°
9°
Nov
11°
3°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)