Formal:
* Aloha kakahiaka, he ʻoliʻoli loa au i ka hālāwai ʻana me ʻoe. (Good morning, it is a pleasure to meet you.)
* Aloha awakea, he ʻoliʻoli loa au i ka hālāwai ʻana me ʻoe. (Good afternoon, it is a pleasure to meet you.)
* Aloha ahiahi, he ʻoliʻoli loa au i ka hālāwai ʻana me ʻoe. (Good evening, it is a pleasure to meet you.)
Informal:
* Aloha, he ʻoliʻoli loa au i ka hālāwai ʻana me ʻoe. (Hello, it is a pleasure to meet you.)
* He ʻoliʻoli loa au i ka hālāwai ʻana me ʻoe. (It is a pleasure to meet you.)
* Maikaʻi loa i ka hālāwai ʻana me ʻoe. (Nice to meet you.)
More casual:
* Aloha ʻoe! (Hello!) - This is a very common greeting, and it's often used as a casual way of saying "Nice to meet you."
Remember that the best way to say "Nice to meet you" in Hawaiian will depend on the situation and your relationship with the person you are speaking to.