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Netherlands / Rotterdam Zuid-Holland
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Jaren: 2026 2025 2024 2023 2020
2026 2025 2024 2023 2020
2026 2025 2024 2023 2020
Data: 14/30 (47%) 🌡 Temperature September
i Average daily temperature based on hourly measurements at 2 meters above ground. 18.0°C
+1.3 °C vs normal
Based on 14/30 days
🌧 Precipitation September
i Total precipitation including rain, snow, and drizzle.
☀ Sunshine September
i Total hours of direct sunshine (>120 W/m²). 104.3u
-26.6 u vs normal
Based on 14/30 days
💨 Wind September
i Average wind speed at 10 meters above ground. 15.5km/h
+2.5 km/h vs normal
Based on 14/30 days
☁ Cloud cover September
i Average cloud cover as a percentage of the sky. 76.7%
+16.3 % vs normal
Based on 14/30 days
💧 Humidity September
i Average relative humidity at 2 meters above ground. 77.9%
-1.1 % vs normal
Based on 14/30 days
4 days {direction, select, warm {warmer} cold {colder} other {}} than normal in a row
Monthly summary September 2026 was 1.3°C warmer than normal with an average of 18.0°C. It was drier than usual: 49.9mm of rain, 37% less than normal. Less sun than usual with 104 hours, 63% less than normal.
gloomiest 25% — sunshine(#4/4)
~ 90% less rain than normal (September)! Daily record: 20.7°C on 13 September
Records 🔥
36.5 °C
Hottest day
01/07/2025
🥶
-5.3 °C
Coldest day
09/01/2024
🌊
34.4 mm
Wettest day
06/07/2025
☀
15.999654947916667 u
Sunniest day
25/06/2023
Download Temperature (°C) CSV Download Precipitation (mm) CSV
Cloud cover 2026 vs 2025 vs 2024 vs normal
Wind Rose Wind direction distribution — September 2026
Dir % Avg N 0.6% 7 km/h NE 1.0% 3.2 km/h E 0.0% 0 km/h SE 3.5% 11.8 km/h S 15.4% 11 km/h SW 36.2% 17.4 km/h W 35.6% 17.7 km/h NW 7.7% 13.3 km/h
🌡 Temperature (°C)Show table
🌧 Precipitation (mm)Show table