Weather in Garden Island

Climate of Garden Island: 1991–2020 normals

In Garden Island, February is typically the warmest month (up to 30.2 °C on average), while July is the coldest at 10.2 °C. July sees the most rain, with around 109 mm.

By season (average highs, 1991–2020 normals): winter 17.1 °C and 310 mm of rain, spring 21.4 °C and 111 mm, summer 29.4 °C and 41 mm, autumn 24.3 °C and 118 mm. The wettest season is winter (54 % of the annual total), the driest summer (7 %).

Compared with Perth (Western Australia), the main town 36 km to the north-east, highs in the warmest month are 0.3 °C lower here, and the year brings 30 mm more precipitation. In no month does the average low fall below 0 °C; in 8 months the average high exceeds 20 °C (January, February, March, April, May, October, November and December).

Nearby places with normals of their own (from another station or reanalysis grid cell) compare as follows: North Coogee (17 km to the north): summers 0.5 °C warmer and 30 mm drier a year; Mandurah (32 km to the south): equally warm summers and 19 mm wetter a year; Bedfordale (34 km to the east): summers 0.2 °C warmer and 15 mm wetter a year. Among the 104 places we cover in Western Australia whose normals come from the ERA5 reanalysis, Garden Island ranks 68th for summer warmth and 23rd for annual precipitation. The warmest summers are in Paraburdoo and the coolest in Dunsborough; the wettest year is in Kununurra and the driest in Carnarvon.