The Met Office have issued a yellow weather warning for the majority of the region.
The yellow warning means people should "be aware" of the chance of heavy downpours and thunderstorms this evening.
More top news
Rain and low cloud set to clear throughout the afternoon.
Cloud and rain to clear away later on this afternoon. Winds to ease.
It happened on the top deck of the Number 14 bus after an altercation between the victim and a group of boys.