Yes it is possible .
Firs login in you MEW wallet
you will get option of "Send Ether & Tokens"
In first box "To Address" enter the another MEW wallet address.
In second box "Amount to Send" enter amount which you want to send.
Leave third box as it is.
Now click on Generate Transaction
after clicking there you get something this
Just click on "Send Transaction"
another popup message will display
Now click on "Yes, I am sure! Make transaction."
Note: Always double check ETHEREUM address
Amount
URL before login