Guide 02 · City comparison
Tokyo vs Osaka weather by month: a climate-normal comparison
The two cities share a broad seasonal pattern, but the published normals show differences worth keeping visible instead of treating either city as a substitute for the other.
Selected month comparisons
| Month | Tokyo mean °C | Osaka mean °C | Tokyo precip. mm | Osaka precip. mm | Tokyo sun h | Osaka sun h |
|---|---|---|---|---|---|---|
| January | 5.4 | 6.2 | 59.7 | 47.0 | 192.6 | 146.5 |
| June | 21.9 | 23.6 | 167.8 | 185.1 | 124.2 | 154.3 |
| August | 26.9 | 29.0 | 154.7 | 113.0 | 174.2 | 222.4 |
| September | 23.3 | 25.2 | 224.9 | 152.8 | 126.7 | 161.6 |
| November | 12.5 | 13.8 | 96.3 | 72.5 | 149.8 | 152.6 |
What the table shows
In this selected set, Osaka’s published mean temperature is higher than Tokyo’s in every listed month. The size and practical meaning of a difference are separate questions: a normal is a comparison baseline, not a comfort score. The precipitation and sunshine columns also move differently from month to month. September is a useful example: Tokyo’s precipitation normal is higher, while Osaka’s mean temperature and sunshine-duration normal are higher.
The comparison is more informative than a generic central-Japan description because each value retains its city label. It is still not a daily-weather tool. Monthly precipitation totals cannot tell a reader how rain is distributed over individual days.
Continue with the full chart
Use the interactive comparison to switch months and compare the full 12-month mean-temperature series. For a larger north–south contrast, see Tokyo versus Sapporo.
Source and limits. Figures are transcribed from JMA’s 1991–2020 climatological-normal tables for the relevant observatories. They are historical references, not a forecast.