Guide 06 · Month context
Japan in June: temperature, rain and sunshine across five cities
A five-city matrix makes a June comparison more precise than a nationwide weather shorthand. These are long-term normals, not a calendar of future wet or clear days.
June climate normals
| Observatory | Mean °C | Daily high °C | Daily low °C | Precip. mm | Sun h |
|---|---|---|---|---|---|
| Sapporo | 17.0 | 21.8 | 13.4 | 60.4 | 180.0 |
| Tokyo | 21.9 | 26.1 | 18.5 | 167.8 | 124.2 |
| Osaka | 23.6 | 28.0 | 20.3 | 185.1 | 154.3 |
| Fukuoka | 23.3 | 27.2 | 20.3 | 249.6 | 145.2 |
| Naha | 27.2 | 29.8 | 25.2 | 284.4 | 159.5 |
Read the dimensions separately
The listed June mean temperatures run from 17.0°C in Sapporo to 27.2°C in Naha. In the same table, Naha has the highest precipitation total and Sapporo the lowest. Sapporo also has the highest sunshine-duration total of these five stations. That is why a one-variable description cannot replace a city comparison.
A precipitation normal is a monthly total, not the number of rainy days or the timing of rainfall. The table is a starting point for regional context; it should not be used to predict a particular itinerary.
Source and limits. JMA Tables of Climatological Normals (1991–2020). No live weather claim is made.