Here are some creative suggestions:

1. “Sun’s Out, Son’s Out – Join Us This Summer!”
2. “Catch the Son’s Rays – Worship with Us!”
3. “Faith in Full Bloom – Summer Services Inside!”
4. “Hot Outside? Our Faith Is Even Hotter!”
5. “Beat the Heat with Cool Worship Here!”
6. “Summer Fun, Eternal Son – Join Our Family!”
7. “God’s Love Is Always in Season – Worship with Us!”
8. “Vacation with Jesus – No Passport Required!”