SugarQuery condition on Month?

I have the need to find records where the expiration date is after the end of next year and the expiration date month is less than this month.

I can use 

$sugarQuery->where()->gt('expiration_date', $next_year_end)

but how can I check for the month?

Am I stuck with a SQL query or can I leverage SugarQuery somehow?

Thanks,
Francesca