Koshigaya Climate by Month
Koshigaya, Saitama, Japan
Hot summers and cool winters, with rain spread through the year.
Koshigaya has hot summers and cool winters, with rain spread through the year. Afternoon highs range from 50°F (10°C) in January to 88°F (31°C) in August, and January nights average 32°F (0°C). It gets 54 in (1360 mm) of rain a year, spread across the months.
- Warmest month
- 88°F(31°C)
- Average high, August
- Coldest nights
- 32°F(0°C)
- Average low, January
- Rain per year
- 54 in(1360 mm)
- No clear rainy season
- Humidity
- 65%
- Sunniest: May
Best and worst months in Koshigaya
Best for weatherMay is the best time for weather in Koshigaya: highs near 74°F (24°C) and about 4.9 in (125 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is the coldest, with highs of only 50°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)
Koshigaya weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 50°F(10°C) | 32°F(0°C) | 1.6 in(41 mm) | 58% | 2.6 |
| FebFebruary | 51°F(11°C) | 34°F(1°C) | 2.0 in(50 mm) | 54% | 3.1 |
| MarMarch | 57°F(14°C) | 40°F(4°C) | 3.5 in(88 mm) | 52% | 3.8 |
| AprApril | 67°F(19°C) | 49°F(9°C) | 4.1 in(105 mm) | 62% | 4.6 |
| MayMayBest | 74°F(24°C) | 58°F(14°C) | 4.9 in(125 mm) | 64% | 5.0 |
| JunJune | 79°F(26°C) | 65°F(19°C) | 6.0 in(152 mm) | 75% | 4.4 |
| JulJuly | 85°F(30°C) | 73°F(23°C) | 6.1 in(156 mm) | 74% | 4.5 |
| AugAugust | 88°F(31°C) | 74°F(24°C) | 5.4 in(137 mm) | 74% | 4.7 |
| SepSeptember | 81°F(27°C) | 68°F(20°C) | 7.1 in(181 mm) | 76% | 3.6 |
| OctOctober | 71°F(22°C) | 57°F(14°C) | 8.1 in(205 mm) | 73% | 2.9 |
| NovNovember | 62°F(17°C) | 46°F(8°C) | 2.8 in(72 mm) | 63% | 2.4 |
| DecDecember | 54°F(12°C) | 36°F(2°C) | 1.9 in(48 mm) | 60% | 2.3 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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