planning to visit xiamen in mid june with 2 children. how is the weather?

Well, according to the previous statistics, the temperature during that period of time is 76 F to 88 F. The climate is warm and comfortable. It may has some showers. But it won't influence your trip a lot. So don't worry. T-shirts and summer clothes are enough.

About the accommodation, what's your budget?
As far as I know, Millan Hotel (Haohui) is one of the most popular hotel in this city. The warm service and clean environment win high popularity among tourists. The price is CNY 300 to 400 per night. It's located at 80 West Hexiang Road, Siming District.

Enjoy your trip. :-)