Diegem Temperature by Month
Diegem, Flemish Brabant, Belgium has an average annual maximum temperature of 16°C (61°F), ranging from 7°C (45°F) in January to 24°C (75°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Diegem Monthly Temperatures
Visitors to Diegem will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 14°C (57°F) in July to 2°C (36°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Diegem by month:
Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. July, the warmest month, sees 205 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Diegem vs Belgium
The map below shows the annual temperature across Belgium. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Diegem vs World: Temperature Compared
Diegem's average annual maximum temperature is 16°C (61°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Diegem?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Diegem, January is the coolest month, with average highs of 7°C (45°F) and humidity around 84% — considered very high. In July, the warmest month, temperatures average 24°C (75°F) with 71% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Diegem's weather — including monthly rainfall, sunshine hours, and humidity — visit our Diegem climate page.
