December is the fullest month on the UAE events calendar. The rugby sevens open it, the Dubai Shopping Festival starts in the second half and runs into January, the outdoor markets and the weekend brunch season are at their peak, and December 2026 ends with fireworks at the Burj Khalifa and along the coast on the 31st.
December closes the fourth quarter and the calendar year on the 31st, and in the UAE those are the same boundary: the corporate tax year and the reporting year both follow the Gregorian calendar. Annual accounts, trade licence renewals and visa cycles all cluster around the turn of December 2026 into January.
December 2026 runs to 31 days and closes a year of 365 on the 31st. The lunar calendar carries straight on regardless: the Hijri year runs about eleven days shorter than this one, so every Islamic observance arrives roughly eleven days earlier in the year that follows.