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Watermaal-Bosvoorde (Watermael-Boitsfort) — Weatherlens — Weatherlens
Belgium / Watermaal-Bosvoorde Watermael-Boitsfort
Brussel
Updated -11 hours ago ↓ 7.8°C/decennium </> Embed code
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Jaren: 2026 2025 2024 2023 2020
2026 2025 2024 2023 2020
2026 2025 2024 2023 2020
Data: 11/30 (37%) 🌡 Temperature September
i Average daily temperature based on hourly measurements at 2 meters above ground. 17.9°C
+1.3 °C vs normal
Based on 11/30 days
🌧 Precipitation September
i Total precipitation including rain, snow, and drizzle.
☀ Sunshine September
i Total hours of direct sunshine (>120 W/m²). 98.8u
+4.4 u vs normal
Based on 11/30 days
💨 Wind September
i Average wind speed at 10 meters above ground. 12.4km/h
Based on 11/30 days
☁ Cloud cover September
i Average cloud cover as a percentage of the sky. 70.9%
Based on 11/30 days
💧 Humidity September
i Average relative humidity at 2 meters above ground. 73.2%
Based on 11/30 days
Monthly summary September 2026 was 1.3°C warmer than normal with an average of 17.9°C. It was drier than usual: 14.0mm of rain, 81% less than normal. Less sun than usual with 99 hours, 62% less than normal.
driest 25% — precipitation(#4/4) gloomiest 25% — sunshine(#4/4)
# Driest September in 4 years (14.0 mm)~ 98% less rain than normal (September)
Records 🔥
35.9 °C
Hottest day
31/07/2020
🥶
-7.9 °C
Coldest day
14/01/2025
🌊
39.500004 mm
Wettest day
07/09/2024
☀
15.017161458333334 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 0.8% 9 km/h NE 0.8% 5 km/h E 2.5% 5.6 km/h SE 8.8% 8.3 km/h S 9.6% 7.3 km/h SW 47.9% 14 km/h W 24.6% 14.3 km/h NW 5.0% 9.2 km/h
🌡 Temperature (°C)Show table
🌧 Precipitation (mm)Show table