Guide 04 · City comparison
Tokyo vs Naha weather by month: two climate profiles, one source
Naha should not be treated as a small variation on Tokyo. A shared data source makes the contrast easy to see without turning it into a prediction.
Selected month comparisons
| Month | Tokyo mean °C | Naha mean °C | Tokyo precip. mm | Naha precip. mm | Tokyo sun h | Naha sun h |
|---|---|---|---|---|---|---|
| January | 5.4 | 17.3 | 59.7 | 101.6 | 192.6 | 93.1 |
| March | 9.4 | 19.1 | 116.0 | 142.8 | 175.3 | 115.3 |
| June | 21.9 | 27.2 | 167.8 | 284.4 | 124.2 | 159.5 |
| August | 26.9 | 29.0 | 154.7 | 240.0 | 174.2 | 206.3 |
| September | 23.3 | 27.9 | 224.9 | 275.2 | 126.7 | 181.3 |
Compare more than temperature
The January mean-temperature difference is 11.9°C in the listed normals. The precipitation columns show another independent pattern: Naha’s June and September totals are higher in this data set, while a monthly total alone cannot say when precipitation will occur. Sunshine duration should also be read as a historical total rather than a promise of clear days.
Using the same source and the same units keeps the comparison auditable. It also avoids the misleading idea that one national weather label describes both observatories. For the selected month across all five locations, use the comparison tool.
Source and limits. JMA 1991–2020 climatological normals. Figures are historical station references, not a weather or safety forecast.