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 RSS
Boom — Weatherlens — Weatherlens
Belgium / Boom Antwerpen
Updated 1 hours ago </> Embed code
Share link Share as image
Jaren: 2026 2025 2024 2023 2020
2026 2025 2024 2023 2020
2026 2025 2024 2023 2020
🌡 Temperature September
i Average daily temperature based on hourly measurements at 2 meters above ground. 18.5°C
+1.7 °C vs normal
🌧 Precipitation September
i Total precipitation including rain, snow, and drizzle.
☀ Sunshine September
i Total hours of direct sunshine (>120 W/m²). 283.1u
+6.0 u vs normal
💨 Wind September
i Average wind speed at 10 meters above ground. 11.1km/h
☁ Cloud cover September
i Average cloud cover as a percentage of the sky. 57.8%
💧 Humidity September
i Average relative humidity at 2 meters above ground. 78.2%
Monthly summary September 2023 was 1.7°C warmer than normal with an average of 18.5°C. With 71.7mm of rain, precipitation was near average. Sunshine was close to average with 283 hours.
warmest 33% — temperature(#1/3) sunniest 33% — sunshine(#1/3)
Did you know...# Warmest September in 3 years (18.5°C)~ 97% less rain than normal (September)— Longest dry streak: 8 consecutive days— 9 summer days (max ≥ 25°C)— 3 heavy rain days (≥ 10mm)
Records 🔥
35.7 °C
Hottest day
01/07/2025
🥶
-6 °C
Coldest day
11/01/2024
🌊
33.099995 mm
Wettest day
18/06/2024
☀
15.912161458333333 u
Sunniest day
25/06/2023
Download Temperature (°C) CSV Download Precipitation (mm) CSV
Cloud cover 2023 vs 2025 vs 2024 vs normal
Wind Rose Wind direction distribution — September 2023
Dir % Avg N 2.8% 10.5 km/h NE 5.3% 6.8 km/h E 21.1% 7.8 km/h SE 13.8% 8 km/h S 19.2% 11.6 km/h SW 26.9% 16.2 km/h W 9.2% 10.5 km/h NW 1.8% 9.5 km/h
🌡 Temperature (°C)Show table
🌧 Precipitation (mm)Show table