Tishrei

Why did Hashem choose Tishrei has the month in which He judges the world? Choosing Tishrei demonstrates Hashem's great compassion. He judges the entire world at the time when He is favorably disposed and full of mercy. For in Tishrei, the Jewish people are busy doing a great many mitzvos: shofar, Yom Kippur, sukkah, and lulav, all of which arouse Hashem's abundant compassion.

(Abudraham)