Iwai, Japan Climate by Month
Iwai, Ibaraki, Japan
Hot summers and cold winters, with rain spread through the year.
The climate in Iwai is one of hot summers and cold winters, with rain spread through the year. Afternoon highs range from 49°F (9°C) in January to 87°F (30°C) in August, and January nights average 30°F (-1°C). About 52 in (1325 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 87°F(30°C)
- Average high, August
- Coldest nights
- 30°F(-1°C)
- Average low, January
- Rain per year
- 52 in(1325 mm)
- No clear rainy season
- Humidity
- 67%
- Sunniest: May
Best and worst months in Iwai
Best for weatherMay and June are the best time for weather in Iwai: highs near 75°F (24°C) and about 5.2 in (133 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is the coldest, with highs of only 49°F (9°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)
Iwai weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 49°F(9°C) | 30°F(-1°C) | 1.5 in(39 mm) | 49% | 2.7 |
| FebFebruary | 50°F(10°C) | 32°F(0°C) | 2.0 in(50 mm) | 57% | 3.1 |
| MarMarch | 56°F(13°C) | 38°F(3°C) | 3.3 in(83 mm) | 55% | 3.8 |
| AprApril | 65°F(19°C) | 47°F(8°C) | 4.0 in(102 mm) | 58% | 4.6 |
| MayMayBest | 73°F(23°C) | 56°F(14°C) | 4.8 in(122 mm) | 67% | 5.0 |
| JunJuneBest | 77°F(25°C) | 64°F(18°C) | 5.7 in(144 mm) | 78% | 4.4 |
| JulJuly | 84°F(29°C) | 71°F(22°C) | 6.0 in(153 mm) | 81% | 4.5 |
| AugAugust | 87°F(30°C) | 73°F(23°C) | 5.2 in(131 mm) | 78% | 4.7 |
| SepSeptember | 80°F(27°C) | 67°F(19°C) | 6.8 in(173 mm) | 79% | 3.6 |
| OctOctober | 70°F(21°C) | 56°F(13°C) | 8.1 in(207 mm) | 76% | 2.9 |
| NovNovember | 62°F(16°C) | 44°F(7°C) | 2.8 in(71 mm) | 66% | 2.4 |
| DecDecember | 53°F(12°C) | 34°F(1°C) | 2.0 in(50 mm) | 63% | 2.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate outside Japan
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