I have a couple questions.

Why do you think that watering twice a day will help?

Why do you think that moving them will help?

Watering once a week is more than most people do. Azaleas should be planted in good soil that retains moisture but is well drained and be very well mulched. The mulch is the key to keeping the soil moist, not watering.

Moving won't fix anything, it just creates more stress. If you meant moving them into a shadier area, it sounds like they are in a perfect area right now with morning sun. If they get too much shade they won't bloom.

Were they pruned or was their shade moved? Sunburn usually occurs from sun hitting leaves that were formerly in the shade, either of other azalea leaves that were pruned, of from a shade tree that was cut back. Once azaleas are hardened off they seldom show sun burn.

It is best to water infrequently but thoroughly.

Somebody please help gardenclueless and answer her questions instead of asking more! She said she's knew and doesn't know. I too and having problems with azaleas planted last fall that are getting sunburned. Too much sun and heat no doubt. I have them in northern exposure, 3 get more morning sun and 3 get more afternoon sun. July heat really made them stress and start turning brown. Are they going to live and should I find a new home for them come fall if they make it?

I asked questions because the original questions made assumptions that are not correct. Watering does not prevent sunburn. Too much sun causes sunburn. Leaves that are reddish brown are not suffering from sunburn.

Sunburn is a yellowing along the main vein. It is permanent. It doesn't go away. The best you can do is do something to keep future leaves from getting sunburn.

If the leaves are wilting in the heat of the day, that is normal. If they are wilted in the morning, then they are too dry or too wet. Being too wet causes root rot which causes the leaves to wilt also.

If the leaves are turning reddish brown, it may be a variety such as PJM that has leaves that turn red in the fall and the drought caused it to turn red sooner.

Here is a link that might be useful: How to grow rhododendrons and azaleas.

I tend to agree with rhodyman and think that the assumption that the plant is suffering from sunburn is a bit of a hasty judgement. I established a hedge of evergreen azaleas on the south side of my house. They get full, direct sun all day and did not not burn even after 10 days in the mid 90's. They were only planted in March and April of this year but I made sure to mulch them well. Precip has been sufficient since then so not too much supplemental watering was needed. Something tells me that these azaleas never really got a chance to get established before the heat kicked in (an azalea planted in a northern exposure, in zone 6 no less, should NOT be suffering sunburn).--Azaleas should be able take some direct sun without scolding in zones 6 and 7 and the camellias and gardenia would show sunburn before the azalea in any case.