During the summer months, theft becomes more of a problem as criminals find that it is easier for them to get into places you would normally close and lock during the winter months. People are out more enjoying the summer as they should be and the criminals take full advantage of this.
Criminals wait for summer months knowing that people leave doors and windows open due to the heat.
Advise your local police department you are on vacation. Have someone pick up your mail and newspapers. Use a timer during the evening hours. Ask a friend or a neighbor to watch your house while you are gone and report any suspicious activity. Most people go out later at night when the weather gets nice.