Netherlands · urban-centre population 1,023,590
Rotterdam
Weather values are area-weighted across the 312 km² urban centre (5 ERA5 cells).
15.9
matching days / year for “Beach weather” · 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 7°C, p10 3°C, p90 11°C
- February: average 8°C, p10 4°C, p90 12°C
- March: average 11°C, p10 7°C, p90 16°C
- April: average 13°C, p10 9°C, p90 18°C
- May: average 17°C, p10 13°C, p90 22°C
- June: average 21°C, p10 16°C, p90 27°C
- July: average 22°C, p10 18°C, p90 26°C
- August: average 22°C, p10 19°C, p90 26°C
- September: average 20°C, p10 15°C, p90 26°C
- October: average 16°C, p10 13°C, p90 19°C
- November: average 10°C, p10 6°C, p90 14°C
- December: average 8°C, p10 3°C, p90 12°C
Matching days by month · Beach weather
- January: 0.0 matching days per year
- February: 0.0 matching days per year
- March: 0.2 matching days per year
- April: 0.2 matching days per year
- May: 0.7 matching days per year
- June: 6.0 matching days per year
- July: 2.5 matching days per year
- August: 4.1 matching days per year
- September: 2.3 matching days per year
- October: 0.0 matching days per year
- November: 0.0 matching days per year
- December: 0.0 matching days per year
Presets
- Eternal spring: 20.7 days/yr
- Mild and dry: 30.0 days/yr
- Beach weather: 15.9 days/yr
- Crisp and clear: 10.9 days/yr
- Warm, not sweaty: 45.2 days/yr