Hachiōji Climate by Month
Hachiōji, Tokyo, Japan
Hot summers and cool winters, with rain spread through the year.
Hot summers and cool winters, with rain spread through the year: that's Hachiōji's climate in short. August is the warmest month, with highs around 87°F (31°C); January is the coolest at 49°F (10°C), and nights dip to 31°F (-1°C). It gets 59 in (1502 mm) of rain a year, spread across the months.
- Warmest month
- 87°F(31°C)
- Average high, August
- Coldest nights
- 31°F(-1°C)
- Average low, January
- Rain per year
- 59 in(1502 mm)
- No clear rainy season
- Humidity
- 65%
- Sunniest: May
Best and worst months in Hachiōji
Best for weatherMay is the best time for weather in Hachiōji: highs near 74°F (23°C) and about 5.6 in (141 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is the coldest, with highs of only 49°F (10°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Hachiōji weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 49°F(10°C) | 31°F(-1°C) | 2.0 in(50 mm) | 47% | 2.7 |
| FebFebruary | 51°F(11°C) | 33°F(1°C) | 2.0 in(52 mm) | 55% | 3.2 |
| MarMarch | 56°F(14°C) | 38°F(4°C) | 3.5 in(90 mm) | 54% | 3.9 |
| AprApril | 66°F(19°C) | 47°F(8°C) | 4.2 in(107 mm) | 58% | 4.7 |
| MayMayBest | 74°F(23°C) | 56°F(13°C) | 5.6 in(141 mm) | 67% | 5.1 |
| JunJune | 78°F(25°C) | 63°F(17°C) | 7.2 in(182 mm) | 75% | 4.5 |
| JulJuly | 84°F(29°C) | 71°F(21°C) | 6.3 in(160 mm) | 78% | 4.8 |
| AugAugust | 87°F(31°C) | 72°F(22°C) | 6.9 in(175 mm) | 75% | 4.9 |
| SepSeptember | 80°F(27°C) | 66°F(19°C) | 7.7 in(196 mm) | 76% | 3.8 |
| OctOctober | 70°F(21°C) | 56°F(13°C) | 8.6 in(218 mm) | 71% | 3.0 |
| NovNovember | 62°F(16°C) | 44°F(7°C) | 2.8 in(72 mm) | 66% | 2.4 |
| DecDecember | 53°F(12°C) | 34°F(1°C) | 2.3 in(59 mm) | 62% | 2.3 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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