What are you going to do in June/in July/in August?

I am going to visit my relatives in the country in June.

I am going to spend some days at the seaside and then go to the mountains in July.

I am going to learn playing the guitar in August.

Обстоятельства времени in June/July/August также могут стоять в начале предложения.

I am going to visit London in June.

I am going to read books in July.

I am going to visit my friends in August.