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Alphen aan den Rijn — Weatherlens — Weatherlens
Netherlands / Alphen aan den Rijn Zuid-Holland
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Jaren: 2026 2025 2024 2023 2020
2026 2025 2024 2023 2020
2026 2025 2024 2023 2020
Data: 12/30 (40%) 🌡 Temperature September
i Average daily temperature based on hourly measurements at 2 meters above ground. 17.3°C
+0.9 °C vs normal
Based on 12/30 days
🌧 Precipitation September
i Total precipitation including rain, snow, and drizzle.
☀ Sunshine September
i Total hours of direct sunshine (>120 W/m²). 90.6u
-20.6 u vs normal
Based on 12/30 days
💨 Wind September
i Average wind speed at 10 meters above ground. 14.6km/h
+1.5 km/h vs normal
Based on 12/30 days
☁ Cloud cover September
i Average cloud cover as a percentage of the sky. 72.1%
+11.4 % vs normal
Based on 12/30 days
💧 Humidity September
i Average relative humidity at 2 meters above ground. 78.0%
-2.0 % vs normal
Based on 12/30 days
3 days {direction, select, warm {warmer} cold {colder} other {}} than normal in a row
Monthly summary September 2026 was 0.9°C warmer than normal with an average of 17.3°C. It was drier than usual: 39.7mm of rain, 53% less than normal. Less sun than usual with 91 hours, 67% less than normal.
driest 25% — precipitation(#4/4) gloomiest 25% — sunshine(#4/4)
# Driest September in 4 years (39.7 mm)~ 91% less rain than normal (September)
Records 🔥
36 °C
Hottest day
26/06/2026
🥶
-5.7 °C
Coldest day
09/01/2024
🌊
35.500004 mm
Wettest day
27/05/2025
☀
15.99380859375 u
Sunniest day
26/06/2024
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 0.3% 4.3 km/h NE 0.0% 0 km/h E 0.7% 6.2 km/h SE 6.3% 9.1 km/h S 18.1% 9.5 km/h SW 39.2% 15.3 km/h W 28.8% 18.2 km/h NW 6.6% 14.1 km/h
🌡 Temperature (°C)Show table
🌧 Precipitation (mm)Show table