WILLIAMSTOWN, SOUTH AUSTRALIA

Under the Köppen Climate Classification climate classification, "dry-summer subtropical" climates are often referred to as "Mediterranean". This climate zone has an an average temperature above 10°C (50°F) in their warmest months, and an average in the coldest between 18 to -3°C (64 to 27°F). Summers tend to be dry with less than one-third that of the wettest winter month, and with less than 30mm (1.18 in) of precipitation in a summer month. SMany of the regions with Mediterranean climates have relatively mild winters and very warm summers.

The Köppen Climate Classification subtype for this climate is "Csb". (Mediterran Climate).

The average temperature for the year in Williamstown is 55.0°F (12.8°C). The warmest month, on average, is January with an average temperature of 66.0°F (18.9°C). The coolest month on average is July, with an average temperature of 45.0°F (7.2°C).

The highest recorded temperature in Williamstown is 108.0°F (42.2°C), which was recorded in January. The lowest recorded temperature in Williamstown is 19.0°F (-7.2°C), which was recorded in June.

The average amount of precipitation for the year in Williamstown is 29.0" (736.6 mm). The month with the most precipitation on average is July with 4.0" (101.6 mm) of precipitation. The month with the least precipitation on average is January with an average of 0.0" (0 mm). In terms of liquid precipitation, there are an average of 139.4 days of rain, with the most rain occurring in August with 19.1 days of rain, and the least rain occurring in February with 4.8 days of rain.