Going from ukelele to guitar can be difficult, especially if your Ukulele is tuned in the re-entrant style it’s normal for the switch to guitar to throw you off. When using re-entrant tuning you’ll be used to the second highest, then lowest, second lowest, then highest notes.
Herein, can you learn guitar after ukulele?
As one who tried to pick up the guitar after getting used to the uke, I can safely and emphatically say that the answer is yes, you will be able to make the transition. You will need to get used to the extra two strings and the size though. Especially that size.
Also know, is guitar much harder than ukulele? The ukulele is easier to learn than the guitar and other stringed instruments like the mandolin. Its soft nylon strings are gentler on your fingertips and don’t create finger pain like guitars do. The small size reduces wrist tension because the notes are reachable without stretching.
Thereof, should I learn guitar or ukulele first?
If this is going to be the first instrument you learn and you want an easy start, then you should go with the ukulele. This is because the ukulele is a relatively easy instrument to learn and usually this will keep you extra motivated to keep learning.