Brussels (Belgium) is a place with a mild climate. Temperatures during the day are in the range from 6.3 °C (43.3 °F) in January to 24.1 °C (75.4 °F) in July. The highest night temperatures could be experienced in July with 13.7 °C (56.7 °F), the lowest in January with 0.9 °C (33.6 °F). The least rainy month in Brussels is April with its 11 days of rain, the rainiest month is December, when it rains 14 days.

January weather

The descent of the sea temperature can be observed, with its value of 6.1 °C (43.0 °F) in Brussels, while the day temperature reaches its minimum, with its value of 6.3 °C (43.3 °F). The number of rainy days starts to descent, with its value being 14 days, and the rainfall amount descent's start could be observed too, with its value of 71 mm (2.80 in). The minimum of the night temperature is observable in this month. The wind speed is on its maximum, with its value of 4.5.

February weather

The day temperature starts to rise, its value is 7.1 °C (44.8 °F) in Brussels, while the sea temperature reaches its minimum in February. The number of rainy days continues to descent, with its value being 12 days, and the rainfall amount continues to descent too, with its value being 58 mm (2.27 in). The number of sun hours (without clouds) starts to rise, with its value of 3 hours.

March weather

The day temperature continues to rise, with its value being 11.1 °C (52.0 °F) in Brussels, while the night temperature starts to rise, its value is 3.2 °C (37.8 °F). The beginning of the rise of the rainfall amount could be noticed in this month. The rise of the number of sun hours (without clouds) can be observed, with its value of 4 hours.

April weather

The day temperature rises similarly to the previous month, its value is 14.9 °C (58.8 °F) in Brussels, while the sea temperature rise's start could be observed, with its value of 8.2 °C (46.8 °F). The number of rainy days reaches its minimum, with its value of 11 days, and the rainfall amount is on its minimum as well in April. The rise of the number of sun hours (without clouds) can be observed, with its value of 5 hours. The night temperature rises similarly to the previous month.

May weather

The tourist season slowly starts in Brussels. The day temperature rises similarly to the previous month, with its value of 19.1 °C (66.4 °F), and the sea temperature rises similarly to the previous month as well, with its value of 11.3 °C (52.4 °F). The number of rainy days starts to rise, with its value of 12 days, and the beginning of the rise of the rainfall amount could be noticed as well in this month. The night temperature continues to rise, with its value of 8.9 °C (48.0 °F).

June weather

The tourist season is taking place in Brussels. The rise of the day temperature can be observed, with its value of 22.1 °C (71.8 °F), and the sea temperature continues to rise as well, its value is 14.5 °C (58.1 °F). The rise of the night temperature can be observed, with its value being 11.3 °C (52.3 °F). The maximum of the day length is observable, its value is 16 hours. The maximum of the number of sun hours (without clouds) can be noticed in June.

July weather

The tourist season is taking place in Brussels. The day temperature is on its maximum, the value of this measure is 24.1 °C (75.4 °F), while the sea temperature rises similarly to the previous month, with its value of 17.2 °C (62.9 °F). The number of rainy days descent's start could be observed in July. The maximum of the night temperature can be noticed. The wind speed is on its minimum in this month.

August weather

The ongoing tourist season is noticeable in Brussels. The maximum of the sea temperature is observable, with its value being 18.5 °C (65.3 °F), while the day temperature descent's start could be observed in August.

September weather

There is pending tourist season in Brussels. The descent of the day temperature can be observed, the value of this measure is 20.1 °C (68.2 °F), while the beginning of the descent of the sea temperature could be noticed, with its value being 17.3 °C (63.1 °F). The number of rainy days descent's start could be observed, the value of this measure is 11 days. The beginning of the descent of the night temperature could be noticed in September. The number of sun hours (without clouds) descent's start could be observed in September.

October weather

The descent of the day temperature can be observed in Brussels, and the descent of the sea temperature can be observed too, with its value of 14.6 °C (58.2 °F). The number of rainy days starts to rise, and the beginning of the rise of the rainfall amount could be noticed as well, its value is 70 mm (2.77 in). The number of sun hours (without clouds) continues to descent, with its value being 4 hours. The night temperature continues to descent, with its value being 7.8 °C (46.0 °F).

November weather

The day temperature continues to descent, with its value of 10.0 °C (50.0 °F) in Brussels, and the sea temperature descents similarly to the previous month too, its value is 11.2 °C (52.1 °F). The number of rainy days rises similarly to the previous month, its value is 13 days. The night temperature descents similarly to the previous month, its value is 4.5 °C (40.1 °F). The number of sun hours (without clouds) continues to descent, with its value of 2 hours.

December weather

The descent of the day temperature can be observed in Brussels, and the sea temperature continues to descent too, with its value being 8.1 °C (46.6 °F). The number of rainy days is on its maximum, with its value being 14 days, and the rainfall amount reaches its maximum as well, its value is 77 mm (3.03 in). The humidity reaches its maximum in December. The number of sun hours (without clouds) reaches its minimum, with its value being 1 hours.

FAQs

What is the night temperature in Brussels in April?

The average night temperature in Brussels in April is 5.4 °C (41.7 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating.

What is the average number of rainy days in Brussels in May?

There are 12 days, which are rainy in May in Brussels, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.7 days of the week, or in general - 39 % days.

Is June a good month to visit Brussels?

June is a good month to visit Brussels. There are some people, who may feel a slight chill at 22.1 °C (71.8 °F), but others will feel perfectly fine. The temperature of 11.3 °C (52.3 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.

Is it hot in Brussels in July?

In July in Brussels, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.

Is there a wet season in Brussels in August?

No, there is no wet season in Brussels in August - you can expect 11 days of rain during the month.

What is the temperature in Brussels during the day in September?

The average daily temperature in Brussels in September is 20.1 °C (68.2 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.

What is the sea temperature in October in Brussels?

In October in Brussels expect the sea to be warm at 14.6 °C (58.2 °F). This is a sea temperature for resilient people only, most people won't enjoy swimming in such cold water or will have to use a wetsuit for water activities.