The a/c will not come on when car starts, then starts working 10 min later.

What is your question?

The a/c in my Outback will not come on when car starts (especially after sitting in heat on a 90-100 degree day). After about 10 minutes, the a/c usually starts working. On a recent trip (12 hours in car), the issue began to happen while driving the car (a /c stopped working then started working again). On that trip, the a/c was loud (heard it clicking) but not air was coming out. When it started working correctly again, the noise subsided. The issue does not happen all of the time (live in Florida), but it is happening more often now than when it started about 2 months ago (once or twice a week now versus once every two weeks).

What makes this problem better or worse?

It seems to happen on extra hot days when sitting in direct sunlight

How long has your 2015 Subaru Outback had this problem?

Has been happening on and off for the past 2 months (maybe once every 2 weeks...getting more frequent)