Hachimantai Climate by Month
Hachimantai, Iwate, Japan
Warm summers and freezing winters, with rain spread through the year.
Warm summers and freezing winters, with rain spread through the year: that's Hachimantai's climate in short. Expect highs of 81°F (27°C) in August and 33°F (1°C) in January, with the coldest nights (January) near 19°F (-7°C). It gets 52 in (1324 mm) of rain a year, spread across the months.
- Warmest month
- 81°F(27°C)
- Average high, August
- Coldest nights
- 19°F(-7°C)
- Average low, January
- Rain per year
- 52 in(1324 mm)
- No clear rainy season
- Humidity
- 76%
- Sunniest: May
Best and worst months in Hachimantai
Best for weatherJune and September are the best time for weather in Hachimantai: highs near 73°F (23°C) and about 5.1 in (131 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 33°F (1°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 June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Hachimantai weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 33°F(1°C) | 19°F(-7°C) | 2.9 in(74 mm) | 83% | 1.8 |
| FebFebruary | 35°F(2°C) | 20°F(-7°C) | 2.4 in(62 mm) | 79% | 2.5 |
| MarMarch | 43°F(6°C) | 27°F(-3°C) | 3.5 in(88 mm) | 72% | 3.5 |
| AprApril | 57°F(14°C) | 37°F(3°C) | 3.7 in(93 mm) | 63% | 4.4 |
| MayMay | 67°F(19°C) | 47°F(9°C) | 3.6 in(92 mm) | 69% | 4.9 |
| JunJuneBest | 73°F(23°C) | 56°F(14°C) | 4.4 in(112 mm) | 77% | 4.8 |
| JulJuly | 78°F(26°C) | 64°F(18°C) | 7.2 in(184 mm) | 80% | 4.5 |
| AugAugust | 81°F(27°C) | 66°F(19°C) | 6.1 in(154 mm) | 78% | 4.5 |
| SepSeptemberBest | 74°F(23°C) | 58°F(14°C) | 5.9 in(149 mm) | 79% | 3.6 |
| OctOctober | 63°F(17°C) | 45°F(7°C) | 5.2 in(133 mm) | 78% | 2.9 |
| NovNovember | 51°F(11°C) | 34°F(1°C) | 3.6 in(91 mm) | 75% | 1.9 |
| DecDecember | 38°F(3°C) | 25°F(-4°C) | 3.6 in(92 mm) | 83% | 1.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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