Verbseoul.
하다 verb (adj)
화창하다hwachanghadato be balmy

To say to be balmy politely in the present tense, use 화창해요 (hwah-chahng-hae-yoh). Below is the full conjugation of 화창하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
화창해
hwah-chahng-hae
화창해요
hwah-chahng-hae-yoh
화창합니다
hwah-chahng-hahm-nee-dah
Past
화창했어
hwah-chahng-hae-ssuh
화창했어요
hwah-chahng-hae-ssuh-yoh
화창했습니다
hwah-chahng-hae-sseum-nee-dah
Future
화창할 거야
hwah-chahng-hahl- -guh-yah
화창할 거예요
hwah-chahng-hahl- -guh-yae-yoh
화창할 겁니다
hwah-chahng-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
화창하세요
hwah-chahng-hah-sae-yoh
Suggestion / Let's Polite (요)
화창해요
hwah-chahng-hae-yoh
Question Polite (요)
화창해요?
hwah-chahng-hae-yoh-?
Connective “and” — (고)
화창하고
hwah-chahng-hah-goh
Conditional “if” — (면)
화창하면
hwah-chahng-hah-myuhn
Noun form — (기)
화창함
hwah-chahng-hahm