Osaka weather in December
In December, Osaka has an average high of 11 °C51 °F and an average low of 3 °C37 °F, with about 76 mm3.0 in of precipitation. It is the 10th warmest month of the year and ranks 11th for precipitation.
How December compares with other months
Compared with November, December is 5.6 °C10.1 °F cooler on average and drier by 17 mm0.7 in. Compared with January, December is 2.4 °C4.2 °F warmer on average and wetter by 10 mm0.4 in. Daylight lasts about 9.8 hours around the middle of the month. Average relative humidity is 84% and the average cloud amount 65%.
Is December a good time to visit Osaka?
December is not among the most comfortable months by our comfort score: it is cool (average high 11 °C51 °F), nights are cold (average low 3 °C37 °F) and it is fairly wet (76 mm3.0 in). The most comfortable months in Osaka are April and May and November.
What to wear in December
For Osaka in December, pack a warm coat, layers and closed shoes.
December in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Osaka | 1151 | 337 | 763.0 |
| Hirakata | 1050 | 337 | 1094.3 |
| Kobe | 1153 | 744 | 722.8 |
| Sandachō | 948 | 033 | 1054.1 |
| Kyoto | 1049 | 236 | 1094.3 |
| Kusatsu | 949 | 133 | 823.2 |
| Minato | 1355 | 847 | 793.1 |
| Himeji | 1050 | 134 | 1054.1 |
| Hikone | 847 | 236 | 1536.0 |
Nearby places that are more than 1 °C1.8 °F warmer in December: Kobe and Minato; cooler: Sandachō, Kusatsu, Himeji and Hikone.
Other months in Osaka
- January8 °C47 °F / 1 °C33 °F
- February10 °C50 °F / 1 °C34 °F
- March14 °C57 °F / 3 °C38 °F
- April19 °C67 °F / 8 °C47 °F
- May24 °C75 °F / 14 °C56 °F
- June27 °C81 °F / 18 °C65 °F
- July30 °C87 °F / 23 °C74 °F
- August31 °C89 °F / 24 °C75 °F
- September28 °C82 °F / 20 °C68 °F
- October22 °C72 °F / 14 °C57 °F
- November17 °C62 °F / 8 °C46 °F
- December11 °C51 °F / 3 °C37 °F
Frequently asked questions
How warm is Osaka in December?
In December the average high in Osaka is 11 °C (51 °F) and the average low is 3 °C (37 °F).
Does it rain a lot in Osaka in December?
On average about 76 mm (3.0 in) of precipitation falls in December; it ranks 11th of the 12 months.
Is December the warmest month in Osaka?
No. The warmest month in Osaka is August, with an average high of 31 °C (89 °F). The coldest month is January, with an average low of 1 °C (33 °F).
How long is the day in Osaka in December?
In the middle of December the day in Osaka lasts about 9.8 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Osaka in December?
The average relative humidity in December is about 84%. This is a long-term average for the whole day.
How cloudy is Osaka in December?
On average about 65% of the sky is covered by cloud in December. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 264 m, while Osaka lies at about 4 m. Temperatures on this page were therefore adjusted by +1.7 °C3 °F using the standard lapse rate of 6.5 °C per 1,000 m.