Japan · urban-centre population 77,712
Kumagaya
Weather values are area-weighted across the 27 km² urban centre (4 ERA5 cells).
25.4
matching days / year for “Eternal spring” · 2021-2025 recent-weather sample (not a 30-year normal)
Monthly high (p10–p90)
Whiskers span the 10th–90th percentile daily high; the tick marks the monthly average.
- January: average 9°C, p10 6°C, p90 12°C
- February: average 10°C, p10 6°C, p90 15°C
- March: average 15°C, p10 9°C, p90 21°C
- April: average 20°C, p10 15°C, p90 25°C
- May: average 23°C, p10 19°C, p90 27°C
- June: average 27°C, p10 22°C, p90 31°C
- July: average 31°C, p10 26°C, p90 35°C
- August: average 32°C, p10 28°C, p90 35°C
- September: average 28°C, p10 23°C, p90 33°C
- October: average 21°C, p10 16°C, p90 26°C
- November: average 17°C, p10 13°C, p90 21°C
- December: average 11°C, p10 7°C, p90 15°C
Matching days by month · Eternal spring
- January: 0.0 matching days per year
- February: 0.5 matching days per year
- March: 2.3 matching days per year
- April: 5.3 matching days per year
- May: 3.3 matching days per year
- June: 0.2 matching days per year
- July: 0.0 matching days per year
- August: 0.0 matching days per year
- September: 0.1 matching days per year
- October: 5.9 matching days per year
- November: 7.3 matching days per year
- December: 0.6 matching days per year
Presets
- Eternal spring: 25.4 days/yr
- Mild and dry: 48.6 days/yr
- Beach weather: 14.7 days/yr
- Crisp and clear: 50.4 days/yr
- Warm, not sweaty: 40.6 days/yr