Normally the average weather in Brussels throughout the time of May is 11 with a general average high of 17 and typical average low being around 8 degrees. With the details being further below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 11 |
| High Temperature | 17 |
| Low Temperature | 8 |
| Sunshine Per Day | 7 |
Useful Links: Brussels Weather: Average Weather & Yearly Climate