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Alkmaar — Weatherlens — Weatherlens
Netherlands / Alkmaar Noord-Holland
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Jaren: 2026 2025 2024 2023 2020
2026 2025 2024 2023 2020
2026 2025 2024 2023 2020
Data: 17/30 (57%) 🌡 Temperature September
i Average daily temperature based on hourly measurements at 2 meters above ground. 17.5°C
+0.9 °C vs normal
Based on 17/30 days
🌧 Precipitation September
i Total precipitation including rain, snow, and drizzle.
☀ Sunshine September
i Total hours of direct sunshine (>120 W/m²). 140.8u
-15.3 u vs normal
Based on 17/30 days
💨 Wind September
i Average wind speed at 10 meters above ground. 20.0km/h
+3.4 km/h vs normal
Based on 17/30 days
☁ Cloud cover September
i Average cloud cover as a percentage of the sky. 69.7%
+7.5 % vs normal
Based on 17/30 days
💧 Humidity September
i Average relative humidity at 2 meters above ground. 80.5%
+1.8 % vs normal
Based on 17/30 days
4 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 17.5°C. It was drier than usual: 85.6mm of rain, 26% less than normal. Less sun than usual with 141 hours, 49% less than normal.
driest 25% — precipitation(#4/4) gloomiest 25% — sunshine(#4/4)
# Driest September in 4 years (85.6 mm)~ 93% less rain than normal (September)! Daily record: 20.1°C on 13 September
Records 🔥
32.8 °C
Hottest day
01/07/2025
🥶
-5.3 °C
Coldest day
11/01/2026
🌊
37.899998 mm
Wettest day
10/06/2024
☀
16.108600260416665 u
Sunniest day
21/06/2025
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 1.7% 5.4 km/h NE 0.0% 0 km/h E 0.5% 5.4 km/h SE 3.2% 11.5 km/h S 15.9% 15.5 km/h SW 33.6% 21.5 km/h W 32.1% 23.5 km/h NW 13.0% 18.3 km/h
🌡 Temperature (°C)Show table
🌧 Precipitation (mm)Show table