Weather in Mortlake

Climate of Mortlake: 1991–2020 normals

In Mortlake, January is typically the warmest month (up to 25.2 °C on average), while July is the coldest at 6.3 °C. August sees the most rain, with around 68 mm.

By season (average highs, 1991–2020 normals): winter 12.5 °C and 170 mm of rain, spring 17.4 °C and 180 mm, summer 24.3 °C and 120 mm, autumn 18.8 °C and 111 mm. The wettest season is spring (31 % of the annual total), the driest autumn (19 %).

Compared with Melbourne, the main town 191 km to the east, highs in the warmest month are 0.8 °C lower here, and the year brings 35 mm less precipitation. In no month does the average low fall below 0 °C; in 5 months the average high exceeds 20 °C (January, February, March, November and December).

Nearby places with normals of their own (from another station or reanalysis grid cell) compare as follows: Terang (20 km to the south-east): summers 0.8 °C cooler and 80 mm wetter a year; Camperdown (34 km to the south-east): summers 0.8 °C cooler and 52 mm wetter a year; Allansford (39 km to the south-west): summers 2.3 °C cooler and 274 mm wetter a year. Among the 189 places we cover in Victoria whose normals come from the ERA5 reanalysis, Mortlake ranks 112th for summer warmth and 106th for annual precipitation. The warmest summers are in Irymple and the coolest in Falls Creek; the wettest year is in Falls Creek and the driest in Merbein.