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
Merchtem — Weatherlens — Weatherlens
Belgium / Merchtem Vlaams-Brabant
Updated -2 hours ago ↓ 8.4°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
🌡 Temperature September
i Average daily temperature based on hourly measurements at 2 meters above ground. 15.7°C
-1.0 °C vs normal
🌧 Precipitation September
i Total precipitation including rain, snow, and drizzle.
☀ Sunshine September
i Total hours of direct sunshine (>120 W/m²). 266.4u
-5.3 u vs normal
💨 Wind September
i Average wind speed at 10 meters above ground. 13.4km/h
☁ Cloud cover September
i Average cloud cover as a percentage of the sky. 60.4%
💧 Humidity September
i Average relative humidity at 2 meters above ground. 72.9%
3 days {direction, select, warm {warmer} cold {colder} other {}} than normal in a row
Monthly summary September 2025 was 1.0°C colder than normal with an average of 15.7°C. It was drier than usual: 42.7mm of rain, 39% less than normal. Sunshine was close to average with 266 hours.
driest 33% — precipitation(#3/3)
Did you know...# Driest September in 3 years (42.7 mm)~ 98% less rain than normal (September)! Daily record: 29.9°C on 7 September
Records 🔥
35.3 °C
Hottest day
31/07/2020
🥶
-7.2 °C
Coldest day
18/01/2024
🌊
28.199999 mm
Wettest day
09/10/2024
☀
15.91181423611111 u
Sunniest day
25/06/2023
Download Temperature (°C) CSV Download Precipitation (mm) CSV
Cloud cover 2025 vs 2025 vs 2024 vs normal
Wind Rose Wind direction distribution — September 2025
Dir % Avg N 8.8% 7.9 km/h NE 15.0% 12 km/h E 3.2% 9 km/h SE 8.6% 8.4 km/h S 22.5% 14.4 km/h SW 31.4% 17.8 km/h W 5.8% 13 km/h NW 4.7% 6.5 km/h
🌡 Temperature (°C)Show table
🌧 Precipitation (mm)Show table