In March, Brussels typically sees daytime highs of 9.9°C and overnight lows around 1.9°C. Compared to the annual average high of 13.8°C, March runs -3.9°C.
March in Brussels averages a daytime high of 9.9°C and an overnight low of 1.9°C.
March runs -3.9°C compared to Brussels's annual average high of 13.8°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 9.9°C and cooler evenings around 1.9°C.