The symptoms are classic for enlarged prostate, which is nothing to do with prostate cancer.
Prostate cancer rarely has any symptoms until it spreads to another part of the body, so the only realistic way it can currently be picked up early is with a PSA blood test, and all men should be getting that done in their 50's, so it's good that's arranged. Sadly there's no national screening program so many men don't get checked in time.
Unfortunately, we can't assure you he doesn't have prostate cancer - you need to wait for the results of the PSA test. The symptoms you describe are not usually due to prostate cancer, but you can have both conditions since they aren't related. Ideally, he would have a digital rectal exam (DRE - finger up the bum) too, because about 16% of prostate cancer doesn't cause an increase in PSA, but it's certainly worth getting a PSA blood test done even if not the DRE.
If it is enlarged prostate, this can be treated with medication, which should ease his urinary symptoms.