If you're looking for summer vibes, the best time to travel to Geelong is in January, December and February, when the average temperature reaches 28.43 °C, while January, February and March are the 3 sunniest months of the year, with an average of 59.35 hours.
If you prefer colder temperatures, however, make sure you visit Geelong during the months of June, July and August to experience an average of 5.8 °C.
For those who don't care too much about temperatures, but want to avoid getting wet in the rain, it's important to avoid travelling during January, February and March, when the average precipitation in Geelong is 6 mm, while the months of January, February and March are drier, with an average of 0 mm.