* Phonetically: The "y" in "January" is pronounced like a "j" sound, which is a consonant.
* Historically: The "y" in "January" actually used to be pronounced as a vowel, but the pronunciation shifted over time.
So, the answer depends on what you're looking for:
* By pronunciation: It's a consonant.
* By spelling: It's a vowel.
Let me know if you'd like more details on the history of the word "January"!