My first real one :-)

[SupathaiflY]

Maples hate to dry out. Full sun and a lack of water is a bad combination for them. I know first hand. Get it into shade and pour the water to it. I stripped all the dead leaves off mine and is is recouperating well.

Ouch thats sunburn! To less water is more likely than to much
Keep in the shade and keep the soil moist and wait for it to grow new leaves

That was my initial thought.
Thanks for the advice!

 

[leatherback]

The wind we have had the last couple of day was extremely dry. Even though my maples were well watered, thse that were hit with the wind, all have traces of this too. It is just not the regular climate. Do not worry, your watering heelp did the job, just the weather has been extreme (I have my irrigation installation switched to 5 minute drench at midday, to get all the surroundings moist, and water twice a day, spaying the suorroundings with water...).

 

[LanceMac10]

So, it's been a while.
Summer is crazy hot over here. Temp goes up to 30°C/86°F
Not a drop of rain to be seen..

Al went well till I got home from holidays.
I've found my acer in this state:
View attachment 201194
Can anyone point out a cause?
Too much sun? (got moved because they found it easier to water...)
Too much or not enough watering?
....?

What should be my next moves on this?

Did someone water this while you were on holiday?