Brussels
Belgium
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Brussels, Belgium

A beautiful slope garden with several museums in the city of Brussels, Belgium
A beautiful slope garden with several museums in the city of Brussels, Belgium
The last month of the spring, May, is an enjoyable month in Brussels, Belgium, with average temperature ranging between max 18.1°C (64.6°F) and min 9.2°C (48.6°F).

Temperature

In Brussels, the average high-temperature slightly increases, from a mild 14.2°C (57.6°F) in April, to a comfortable 18.1°C (64.6°F). In Brussels, Belgium, in May, the average low-temperature is 9.2°C (48.6°F).

Humidity

In Brussels, the average relative humidity is 73.2%.

Rainfall

In Brussels, in May, it is raining for 16.2 days, with typically 66.5mm (2.6") of accumulated precipitation. In Brussels, during the entire year, the rain falls for 199.6 days and collects up to 852.8mm (33.6") of precipitation.

Snowfall

In May, in Brussels, it doesn't snow. April is the latest month when it typically snows. In Brussels, during the entire year, snow falls for 23.7 days.

Daylight

The average length of the day in May is 15.6h.

Sunshine

In Brussels, the average sunshine is 6.2h.

UV index

In Brussels, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: In May, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in May in Brussels?

In Brussels, Belgium, in May, the average high-temperature is 18.1°C (64.6°F), and the average low-temperature is 9.2°C (48.6°F).

What is the average humidity in May in Brussels?

In May, the average relative humidity in Brussels is 73.2%.

How much does it rain in Brussels in May?

In Brussels, during May, the rain falls for 16.2 days and regularly aggregates up to 66.5mm (2.6") of precipitation.

Does it snow in Brussels in May?

In May, in Brussels, Belgium, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May in Brussels?

In Brussels, Belgium, the average length of the day in May is 15.6h.

How long on average sun shines in May in Brussels?

The average sunshine in May in Brussels is 6.2h.

What is the UV index reading in May in Brussels?

In Brussels, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to the UV radiation.
Average temperature in May - Brussels, Belgium
  • Average high temperature in May: 18.1°C

The warmest month (with the highest average high temperature) is July (23°C).
The month with the lowest average high temperature is January (5.7°C).

  • Average low temperature in May: 9.2°C

The month with the highest average low temperature is July (14°C).
Coldest months (with the lowest average low temperature) are January and February (0.7°C).

Average humidity in May - Brussels, Belgium
  • Average humidity in May: 73.2%

The month with the highest relative humidity is December (88.8%).
The month with the lowest relative humidity is April (72.5%).

Average rainfall in May - Brussels, Belgium
  • Average rainfall in May: 66.5mm

The wettest month (with the highest rainfall) is December (81mm).
The driest month (with the lowest rainfall) is April (51.3mm).

Average rainfall days in May - Brussels, Belgium
  • Average rainfall days in May: 16.2 days

The month with the highest number of rainy days is December (19.3 days).
The month with the lowest number of rainy days is July (14.3 days).

Average snowfall days in May - Brussels, Belgium
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (5.9 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight in May / Average sunshine in May - Brussels, Belgium
  • Average daylight in May: 15.6h

The month with the longest days is June (Average daylight: 16.4h).
The month with shortest days is December (Average daylight: 8h).

  • Average sunshine in May: 6.2h

The month with most sunshine is July (Average sunshine: 6.5h).
The month with least sunshine is December (Average sunshine: 1.5h).

Average UV index in May - Brussels, Belgium
  • Average UV index in May: 6

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 1).