Early Quenya
austa
noun. (high) summer
andonavestan
proper name. Gates of Summer
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
Qenya name for ᴱN. Ennyn Awest in Noldorin word lists from the 1920s (PE13/143, 160). It is a compound of andon “gate” and the genitive avestan of avesta “summer”.