Brussels, Belgium – Climate and Average Weather Year Round: Comprehensive Guide

Brussels, the capital of Belgium, experiences a moderate climate with distinct seasons.

In July, the warmest month, temperatures average a high of 72°F and a low of 57°F. This makes it an ideal time to visit for those who enjoy warm weather without the extreme heat.

During the cooler months, from November to March, daily high temperatures drop below 48°F.

January is the coldest month, with average lows around 35°F and highs reaching 42°F.

Rainfall is consistent throughout the year, ranging from about 2 inches in April to over 2.4 inches in other months, ensuring the city remains lush and green.

Historical weather data reveals that Brussels’ climate is influenced by its location in Europe.

The city’s weather patterns are fairly predictable, making it easier for travelers to plan their trips.

Regular weather forecasts and climate graphs also provide valuable insights for both locals and visitors, helping them prepare for any significant changes possibly caused by global warming.

Average Temperature in Brussels, Belgium

Brussels experiences a mild climate with temperatures varying throughout the year.

In January, the coldest month, the average temperature ranges from 34°F to 41°F.

July, the warmest month, sees average temperatures from 57°F to 74°F. It is generally considered pleasant and mild. During this month, temperatures may reach their peak, hitting the annual maximum.

February and March see temperatures gradually rising. February averages 36°F to 45°F, while March averages 39°F to 50°F.

By April, daily averages range from 43°F to 54°F along with increased daylight and warmer nights.

In spring, temperatures shift to a more comfortable range by May.

The daily averages during this month range from 48°F to 61°F, providing a cool yet agreeable weather pattern.

Summer conditions in August are similar to July, though slightly cooler. Daily averages range from 57°F to 73°F.

By October, temperatures have begun to decline again. The average temperature falls between 48°F during the day and 39°F at night.

In November, cooler days set in with averages between 41°F and 36°F.

December continues this trend, with averages from 35°F to 41°F, setting the stage for January’s coldest temperatures.

Brussels’ climate remains relatively stable with minor changes in daily average temperatures across the months.

For a deeper insight into temperature trends, refer to related articles on temperature.

Average Precipitation in Brussels, Belgium

Brussels experiences a variety of precipitation throughout the year, including both rainfall and occasional snowfall. Rain is common and evenly distributed, while snow is more likely in the winter months.

Average Rainfall in Brussels, Belgium

Rainfall in Brussels is quite consistent year-round, with every month receiving some precipitation. On average, the city receives about 46.72 inches of rainfall annually. The wettest month tends to be July, though other months also see significant rainfall.

January: 2.1 inches
February: 2.2 inches
March: 2.0 inches
April: 2.0 inches
May: 2.7 inches
June: 2.9 inches
July: 3.1 inches
August: 3.0 inches
September: 2.7 inches
October: 2.8 inches
November: 2.6 inches
December: 2.4 inches

Rainy days are spread throughout the year, making Brussels feel quite wet. The city has around 128.54 rainy days annually, which equates to about 35.22% of the time.

Average Snow in Brussels, Belgium

Snowfall is less frequent but can still occur, especially in the colder months. The peak of the cold season in Brussels is between November and March. During this period, snow is more common, although it usually does not pile up significantly.

Snow typically occurs in small amounts. January often sees the most snow, and temperatures can drop to around 22.5°F on the coldest nights.

Colder months:

November: rare snow
December: occasional snow
January: most snowfall
February: frequent snow
March: rare snow

While snow and ice can affect daily life, it is often manageable. For more about snow and ice patterns, visit this resource.

Brussels’ combination of regular rainfall and occasional snow defines its unique precipitation pattern, impacting both nature and human activities.

Average Sun in Brussels, Belgium

Brussels experiences a variety of sunlight and sunshine hours throughout the year, with clear differences between summer and winter.

Average Daily Shortwave Solar Energy in Brussels, Belgium

The amount of daily shortwave solar energy in Brussels varies significantly by season.

During the summer, particularly in July, Brussels enjoys the highest levels of sunshine with an average daily solar radiation of about 6.5 kWh/m².

In contrast, winter months like December have much lower sunlight levels, averaging around 1.0 kWh/m². These variations affect the amount of daylight and twilight experienced.

Cloudy days are more common in winter, reducing total hours of sunshine and making daylight shorter. This variability affects the daily experience of residents and visitors.

The sunniest days are more common from late spring to early summer, contributing to more hours of sunshine and longer daylight periods.

Average Humidity in Brussels, Belgium

Brussels experiences varying levels of humidity throughout the year. The most humid month is December, while April records the least humidity.

In winter, the air feels more humid due to higher relative humidity.

December, for instance, sees a relative humidity of 86%.

Summer months, such as July and August, are less humid.

July has a relative humidity of 74%. Even in these months, the humidity remains noticeable but is not oppressive.

Dew point is also an important factor.

Brussels has a high dew point during humid months, making the air feel moist and uncomfortable.

Compared to summer, spring months, particularly April, are less humid. The relative humidity in April stands at 69%, the lowest in the year.

For detailed climate information, you can visit World Weather & Climate Information.

Average Wind in Brussels, Belgium

Wind patterns in Brussels vary throughout the year. The average wind speed is typically around 10 mph (17 kph). These wind patterns result in mild breezes most of the time.

Brussels often experiences its windiest month in February.

February stands out as particularly windy, with speeds reaching up to 12 mph.

The summer months of June, July, and August generally have the lowest wind speeds, around 7-8 mph.

Brussels’ wind speeds contribute to its unique climate. By spreading out the period of the highest wind speeds mainly in winter, and lower speeds during the summer, the weather remains balanced.

More information about wind patterns can be found in detailed articles that explain various aspects of wind and its effects. These sources provide a comprehensive look at how wind influences the overall climate in regions like Brussels.

Average Air Quality in Brussels, Belgium

The air quality in Brussels can vary throughout the year, but it generally remains within acceptable limits.

Common Pollutants:

• PM2.5: These are fine particulate matters that can affect health.
• PM10: Larger particles that can also impact health.
• NO2: Nitrogen dioxide is common due to vehicle emissions.
• Ozone (O3): Often higher in summer due to sunlight interacting with pollutants.
• CO & SO2: Carbon monoxide and sulfur dioxide levels are usually low.

Air Quality Index (AQI) is an essential measure to understand pollution levels. It categorizes air quality as follows:

• 0-50: Good
• 51-100: Moderate
• 101-150: Unhealthy for Sensitive Groups
• 151-200: Unhealthy
• 201-300: Very Unhealthy
• 301-500: Hazardous

Monthly Average AQI for Brussels:

Brussels experiences mild to moderate levels of pollution.

The UV Index in Brussels varies, with lower levels in winter and higher levels in summer.

For more detailed information, check the climate data from WeatherWorld and Weather Atlas.

Topography of Brussels, Belgium

Brussels, the capital of Belgium, sits mostly on a gently undulating plateau. The city is about 100 meters (328 feet) above sea level.

The Senna River flows through Brussels. Though largely covered now, it once played a significant role in the city’s development.

Table of Elevation Levels:

To the southeast, the Sonian Forest adds a touch of hilly terrain. This forested area provides a contrast to the more urban parts of Brussels.

The city’s overall layout is a mix of flat areas and gentle slopes, making it suitable for walking and cycling.

In some areas, Brussels’ streets wind around small hills. These streets offer scenic views and charming, varied architecture.

The city also features numerous parks and gardens, which utilize the natural topography to create beautiful landscapes.

The region’s topography has influenced its climate. For instance, the relative altitude differences can slightly affect local weather patterns.

Extreme Weather Events that Occur in Brussels, Belgium

Brussels experiences extreme weather events throughout the year.

Heavy Rainfall

Heavy rain is common, especially in autumn and spring. In recent years, intense rainfall led to significant flooding. For example, in July 2021, there were record-breaking floods owing to torrential rains, affecting much of the city and surrounding areas.

Electrical Storms

Brussels often faces electrical storms during summer. These storms can cause disruptions and are usually accompanied by heavy rain and strong winds. More information can be found about these electrical storms here.

Freezing Winters

Winters in Brussels can be quite cold, with temperatures sometimes dropping below freezing. Snowfall is not frequent but can occur. The winter of 2021 saw significant snow, leading to disruptions in daily life.

Foggy Conditions

Fog is another weather event seen mostly in autumn and winter. It reduces visibility and can cause travel delays. The frequency of foggy days is higher during these seasons due to the atmospheric conditions in Brussels.

Monthly Average Temperature and Rainfall

A breakdown of the monthly average temperature and rainfall in Brussels:

Impact on Health

Severe weather, such as heatwaves and floods, also impacts public health. Flooding can lead to an increase in waterborne diseases due to contaminated water sources.

Atmospheric Phenomena

Extreme events are influenced by various atmospheric phenomena. These events are more sensitive to specific conditions than seasonal averages. More about these phenomena can be read here.

Best Time of the Year to Visit Brussels, Belgium

Brussels offers a pleasant and varied climate throughout the year, making it an interesting destination in every season.

Each season has unique weather patterns and attractions that can suit different preferences and travel plans.

What Is Brussels, Belgium Like in Spring

Spring in Brussels, covering March, April, and May, is a delightful time to visit. The temperatures range from 45°F to 65°F, offering mild and comfortable weather. Spring blooms adorn the city, making parks and gardens particularly beautiful during this period.

With fewer tourists, it’s easier to explore popular attractions such as the Grand Place and Atomium without the crowds. Prices for accommodation and flights may also be more reasonable compared to the peak summer months.

What Is Brussels, Belgium Like in Summer

Summer in Brussels spans June, July, and August. This is the warmest period, with temperatures ranging from 60°F to 75°F. It is also the peak tourist season, attracting many visitors to the city’s festivals and outdoor activities.

Events like the Belgian Beer Weekend and various music festivals add to the lively atmosphere. Expect higher prices for hotels and more crowded attractions. An umbrella and a light jacket are recommended, as summer showers are common.

What Is Brussels, Belgium Like in Fall

Fall includes September, October, and November. The weather in Brussels during fall is cooler, with temperatures ranging from 45°F to 65°F. The city is particularly enchanting as the leaves change color, creating picturesque views and a cozy ambiance.

What Is Brussels, Belgium Like in Winter

Winter in Brussels covers December, January, and February. The temperatures can be chilly, ranging from 30°F to 45°F.

Snow is rare, but occasional frost adds a wintery charm to the city. Rain is more frequent, so waterproof clothing is essential.

Winter brings festive cheer, with Christmas markets and light displays throughout the city.

Although daylight hours are shorter, the cozy cafes and warm Belgian waffles offer comfort against the cold.

Prices for travel and accommodation are generally lower, providing budget-friendly options for visitors.