Kamaishi Climate by Month
Kamaishi, Iwate, Japan
Warm summers and cold winters, with rain spread through the year.
The climate in Kamaishi is one of warm summers and cold winters, with rain spread through the year. Afternoon highs range from 39°F (4°C) in January to 79°F (26°C) in August, and January nights average 26°F (-3°C). About 57 in (1455 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 79°F(26°C)
- Average high, August
- Coldest nights
- 26°F(-3°C)
- Average low, January
- Rain per year
- 57 in(1455 mm)
- No clear rainy season
- Humidity
- 73%
- Sunniest: May
Best and worst months in Kamaishi
Best for weatherThe most comfortable weather comes from July to September, with highs around 76°F (25°C) and about 7.0 in (177 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is the coldest, with highs of only 39°F (4°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 August.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Kamaishi weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 39°F(4°C) | 26°F(-3°C) | 2.0 in(50 mm) | 63% | 2.2 |
| FebFebruary | 40°F(5°C) | 26°F(-3°C) | 1.8 in(45 mm) | 62% | 2.9 |
| MarMarch | 46°F(8°C) | 31°F(-1°C) | 3.3 in(84 mm) | 63% | 3.8 |
| AprApril | 56°F(14°C) | 39°F(4°C) | 4.8 in(121 mm) | 62% | 4.6 |
| MayMay | 64°F(18°C) | 48°F(9°C) | 5.3 in(135 mm) | 72% | 4.9 |
| JunJune | 70°F(21°C) | 56°F(13°C) | 5.9 in(151 mm) | 82% | 4.7 |
| JulJulyBest | 76°F(25°C) | 63°F(17°C) | 7.4 in(189 mm) | 85% | 4.4 |
| AugAugustBest | 79°F(26°C) | 66°F(19°C) | 5.7 in(144 mm) | 84% | 4.4 |
| SepSeptemberBest | 73°F(23°C) | 59°F(15°C) | 7.8 in(197 mm) | 82% | 3.5 |
| OctOctober | 64°F(18°C) | 48°F(9°C) | 7.5 in(191 mm) | 78% | 2.9 |
| NovNovember | 55°F(13°C) | 38°F(3°C) | 2.8 in(71 mm) | 75% | 2.2 |
| DecDecember | 44°F(7°C) | 29°F(-1°C) | 3.0 in(77 mm) | 68% | 1.8 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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