Skip to content Weatherlens
Weather data: Open-Meteo.com (CC BY 4.0)
Historical data, no forecasts. Climate normals based on 30-year average.
Copernicus/ERA5 : Contains modified Copernicus Climate Change Service information. Neither the European Commission nor ECMWF is responsible for any use of the information.
Weather Reports API Privacy Contact
Jette — Weatherlens — Weatherlens
Belgium / Jette Brussel
Updated -15 hours ago ↓ 6.2°C/decennium </> Embed code
Share link Share as image
Jaren: 2026 2025 2024 2023 2020
2026 2025 2024 2023 2020
2026 2025 2024 2023 2020
Data: 16/30 (53%) 🌡 Temperature September
i Average daily temperature based on hourly measurements at 2 meters above ground. 18.4°C
+1.6 °C vs normal
Based on 16/30 days
🌧 Precipitation September
i Total precipitation including rain, snow, and drizzle.
☀ Sunshine September
i Total hours of direct sunshine (>120 W/m²). 139.5u
+0.4 u vs normal
Based on 16/30 days
💨 Wind September
i Average wind speed at 10 meters above ground. 12.7km/h
Based on 16/30 days
☁ Cloud cover September
i Average cloud cover as a percentage of the sky. 71.5%
Based on 16/30 days
💧 Humidity September
i Average relative humidity at 2 meters above ground. 75.7%
Based on 16/30 days
Monthly summary September 2026 was 1.6°C warmer than normal with an average of 18.4°C. It was drier than usual: 13.9mm of rain, 81% less than normal. Less sun than usual with 140 hours, 47% less than normal.
driest 25% — precipitation(#4/4) gloomiest 25% — sunshine(#4/4)
# Driest September in 4 years (13.9 mm)~ 99% less rain than normal (September)! Daily record: 22.2°C on 14 September
Records 🔥
36.2 °C
Hottest day
01/07/2025
🥶
-6.4 °C
Coldest day
18/01/2024
🌊
30.7 mm
Wettest day
29/06/2024
☀
15.044780815972222 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 0.6% 3.9 km/h NE 0.3% 6.5 km/h E 0.3% 4.4 km/h SE 7.4% 8.6 km/h S 9.5% 9.3 km/h SW 53.0% 13.4 km/h W 25.0% 14.8 km/h NW 3.9% 9.5 km/h
🌡 Temperature (°C)Show table
🌧 Precipitation (mm)Show table