Kawaguchi Climate by Month
Kawaguchi, Saitama, Japan
Hot summers and cool winters, with rain spread through the year.
The climate in Kawaguchi is one of hot summers and cool winters, with rain spread through the year. August is the warmest month, with highs around 89°F (32°C); January is the coolest at 50°F (10°C), and nights dip to 33°F (1°C). About 56 in (1419 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 89°F(32°C)
- Average high, August
- Coldest nights
- 33°F(1°C)
- Average low, January
- Rain per year
- 56 in(1419 mm)
- No clear rainy season
- Humidity
- 65%
- Sunniest: May
Best and worst months in Kawaguchi
Best for weatherThe most comfortable weather comes in May, with highs around 75°F (24°C) and about 5.1 in (130 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)
Kawaguchi weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 50°F(10°C) | 33°F(1°C) | 1.8 in(46 mm) | 56% | 2.6 |
| FebFebruary | 52°F(11°C) | 35°F(2°C) | 2.0 in(52 mm) | 52% | 3.1 |
| MarMarch | 57°F(14°C) | 41°F(5°C) | 3.7 in(93 mm) | 59% | 3.7 |
| AprApril | 67°F(20°C) | 49°F(10°C) | 4.3 in(109 mm) | 60% | 4.6 |
| MayMayBest | 75°F(24°C) | 58°F(15°C) | 5.1 in(130 mm) | 63% | 5.0 |
| JunJune | 79°F(26°C) | 66°F(19°C) | 6.3 in(161 mm) | 73% | 4.4 |
| JulJuly | 86°F(30°C) | 73°F(23°C) | 6.4 in(162 mm) | 73% | 4.5 |
| AugAugust | 89°F(32°C) | 75°F(24°C) | 5.6 in(142 mm) | 73% | 4.6 |
| SepSeptember | 82°F(28°C) | 68°F(20°C) | 7.4 in(187 mm) | 74% | 3.6 |
| OctOctober | 72°F(22°C) | 58°F(14°C) | 8.2 in(209 mm) | 72% | 2.9 |
| NovNovember | 63°F(17°C) | 47°F(8°C) | 3.0 in(76 mm) | 61% | 2.4 |
| DecDecember | 54°F(12°C) | 37°F(3°C) | 2.0 in(52 mm) | 58% | 2.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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