Koga, Japan Climate by Month
Koga, Ibaraki, Japan
Hot summers and cold winters, with rain spread through the year.
The climate in Koga is one of hot summers and cold winters, with rain spread through the year. August is the warmest month, with highs around 88°F (31°C); January is the coolest at 49°F (10°C), and nights dip to 30°F (-1°C). About 51 in (1293 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 88°F(31°C)
- Average high, August
- Coldest nights
- 30°F(-1°C)
- Average low, January
- Rain per year
- 51 in(1293 mm)
- No clear rainy season
- Humidity
- 66%
- Sunniest: May
Best and worst months in Koga
Best for weatherThe most comfortable weather comes in May, with highs around 74°F (23°C) and about 4.8 in (121 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)
Koga weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 49°F(10°C) | 30°F(-1°C) | 1.5 in(39 mm) | 49% | 2.6 |
| FebFebruary | 51°F(10°C) | 31°F(0°C) | 1.8 in(46 mm) | 57% | 3.1 |
| MarMarch | 57°F(14°C) | 37°F(3°C) | 3.0 in(75 mm) | 54% | 3.8 |
| AprApril | 66°F(19°C) | 46°F(8°C) | 3.9 in(98 mm) | 58% | 4.6 |
| MayMayBest | 74°F(23°C) | 56°F(13°C) | 4.8 in(121 mm) | 67% | 5.0 |
| JunJune | 78°F(26°C) | 64°F(18°C) | 5.8 in(147 mm) | 73% | 4.4 |
| JulJuly | 85°F(29°C) | 71°F(22°C) | 6.1 in(154 mm) | 76% | 4.5 |
| AugAugust | 88°F(31°C) | 73°F(23°C) | 5.3 in(134 mm) | 77% | 4.6 |
| SepSeptember | 80°F(27°C) | 66°F(19°C) | 6.6 in(168 mm) | 75% | 3.6 |
| OctOctober | 71°F(22°C) | 55°F(13°C) | 7.8 in(199 mm) | 71% | 2.9 |
| NovNovember | 62°F(17°C) | 44°F(6°C) | 2.5 in(64 mm) | 66% | 2.4 |
| DecDecember | 53°F(12°C) | 33°F(1°C) | 1.9 in(48 mm) | 63% | 2.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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