Geelong Weather & Climate Guide: Year-Round

Geelong has a cool temperate oceanic climate modified by its position at the head of Port Phillip Bay: the bay moderates temperature extremes (the water mass absorbs and releases heat slowly), the Surf Coast southerly sea breezes provide summer cooling, and the Otway Ranges to the south-west generate local fog and cloud patterns that differ from the Melbourne metropolitan area. Geelong is typically 2 to 4°C cooler in summer than Melbourne on the hottest days due to the bay influence.

Summer (December to February), Geelong summers are warm (average January maximums 25 to 27°C) and significantly more moderate than Melbourne on extreme heat days. When Melbourne exceeds 40°C, Geelong is typically 35 to 37°C due to the sea breeze off Port Phillip Bay. The Surf Coast (Torquay, Jan Juc, Bells Beach) receives a consistent south-westerly sea breeze in summer that creates excellent surf conditions and moderates the coastal heat. Eastern Beach on the Geelong waterfront is the city's most popular summer swimming location.

Autumn (March to May), Geelong autumn is pleasant and consistent: temperatures moderate from summer heat to the 17 to 21°C of April and May, with the Bay providing a calming marine influence that reduces the dramatic weather variability of inland Melbourne. The Bellarine Peninsula wineries and the Surf Coast beach villages are at their most pleasant in autumn with reduced crowds.

Winter (June to August), Geelong winters are cool and similar to Melbourne's: average July maximums of 13 to 14°C, overnight minimums of 6 to 8°C, and the prevailing westerly winds from the Otways bringing rain and low cloud. The Otway Ranges south of Geelong receive significant winter rainfall (over 1,000mm per year at the highest points) while Geelong averages around 500mm annually.

Spring (September to November), Geelong spring is excellent: the Bellarine Peninsula wildflower season, the return of the surf season on the Surf Coast, and the warming temperatures from September to November make spring one of the finest times to explore the broader Geelong region including the Great Ocean Road, which becomes progressively more crowded from December.