🇧🇪Belgium
10 cities
Climate overview
Belgium lies in northwestern Europe at 49°30′–51°30′N, spanning the low Flanders plain near the North Sea coast to the Ardennes plateau in the southeast, which rises to 694 m at Signal de Botrange. The entire country exhibits a temperate oceanic climate (Köppen Cfb) shaped by Atlantic frontal systems, though the Ardennes show subtle continental influence with colder winters and heavier precipitation. The North Sea moderates coastal temperatures, keeping them milder year-round with frequent maritime fog.
Brussels averages 3°C in January and 18°C in July with approximately 820 mm annual precipitation distributed fairly evenly. Coastal Flanders remains milder, while the Ardennes receive 1,200–1,400 mm annually and see reliable winter snow above 500 m. Recent decades have brought more frequent summer heatwaves—temperatures exceeding 40°C were recorded in Flanders in 2019 and 2020—and heavy rainfall events, including the July 2021 floods on the Meuse and Vesdre rivers in Wallonia affecting multiple communities. Atlantic frontal systems continue to dominate weather patterns.
Our archive covers 10 Belgian cities with daily ERA5 reanalysis data going back to 1940. The warmest July averages occur in Liège, around 22.2°C, while Charleroi records the coldest January nights near 0.1°C. Comparing the last decade against the 1940–1970 baseline, mean temperatures across these cities have risen by about 1.8°C.
How the climate has shifted in Belgium
Average across 10 cities with full ERA5 coverage — 1940–1970 baseline vs the last decade (2016–2025).
- Annual mean temperature
- 9.9°C→11.6°C
- Days above 30°C per year
- 2 days→7 days+5
- Frost days per year
- 57 days→29 days−28
- Tropical nights (≥20°C) per year
- 0 nights→1 nights+1
Warmest year in the record so far: 2022.
What's unusual right now
From a snapshot of the world's largest cities updated each hour. Today's mean temperature compared with each city's long-term average for the same calendar date (ERA5 climatology, 1940 onward). Last 30 days uses each city's rolling daily-mean vs its monthly average. Not a global ranking.
Warmer than usual
Cooler than usual