Why are my feminized seeds flowering at the start of summer

[Greenfox]

I have mango sapphire and purple bud growing outdoors. They are only six to eight weeks old and probably 40cm tall and have started to flower. I'm in the Southern Hemisphere and it is only the first week of summer. Will they reverte to veg or keep flowering, they look like there going to keep flowering. I've only had this start happening since using feminized seeds.