In June, Brussels typically sees daytime highs of 20.6°C and overnight lows around 10.5°C. Compared to the annual average high of 13.8°C, June runs +6.8°C.
June in Brussels averages a daytime high of 20.6°C and an overnight low of 10.5°C.
June runs +6.8°C compared to Brussels's annual average high of 13.8°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 20.6°C and cooler evenings around 10.5°C.