Early Quenya
aurea
adjective. sunny, sunlit
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
aurea
adjective. sunny, sunlit
ᴱQ. aurea “sunlit, sunny” appeared in the Qenya Lexicon of the 1910s, an adjectival form of the early word ᴱQ. aure “sunlight” (QL/33). This word also appeared in the contemporaneous Poetic and Mythological Words of Eldarissa with the gloss “sunny” (PME/33).
Neo-Quenya: I think this word can be salvaged as ᴺQ. aurëa “✱daytime”, an adjectival form of the later word aurë “day(light)” (RC/727), by extension also meaning brightly lit by day hence also sunlit and sunny. Thus aurëa oron “daytime mountain” is one lit by the day = “sunny mountain”, and also aurëa arin “daytime morning” is a sunny morning. Aurëa would be both warm and bright as opposed to calina which is merely bright.