Japan · urban-centre population 142,850
Hitachi
Weather values are area-weighted across the 58 km² urban centre (3 ERA5 cells).
34.4
matching days / year for “Warm, not sweaty” · 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 8°C, p10 5°C, p90 12°C
- February: average 9°C, p10 6°C, p90 13°C
- March: average 12°C, p10 8°C, p90 16°C
- April: average 16°C, p10 13°C, p90 19°C
- May: average 20°C, p10 17°C, p90 22°C
- June: average 23°C, p10 20°C, p90 27°C
- July: average 27°C, p10 24°C, p90 30°C
- August: average 28°C, p10 26°C, p90 30°C
- September: average 26°C, p10 22°C, p90 29°C
- October: average 21°C, p10 17°C, p90 25°C
- November: average 16°C, p10 13°C, p90 20°C
- December: average 11°C, p10 8°C, p90 14°C
Matching days by month · Warm, not sweaty
- January: 0.0 matching days per year
- February: 0.0 matching days per year
- March: 0.7 matching days per year
- April: 3.5 matching days per year
- May: 6.9 matching days per year
- June: 2.9 matching days per year
- July: 0.3 matching days per year
- August: 0.2 matching days per year
- September: 3.2 matching days per year
- October: 10.7 matching days per year
- November: 5.9 matching days per year
- December: 0.3 matching days per year
Presets
- Eternal spring: 18.8 days/yr
- Mild and dry: 40.0 days/yr
- Beach weather: 11.5 days/yr
- Crisp and clear: 46.3 days/yr
- Warm, not sweaty: 34.4 days/yr