Melbourne has a moderate oceanic climate and is well known for its changeable weather conditions. This is because Melbourne is located on the boundary of the very hot inland areas and the cold southern ocean. This temperature differential is most pronounced in the spring and summer months and can cause very strong cold fronts to form. These cold fronts can be responsible for all sorts of severe weather from gales to severe thunderstorms and hail, large temperature drops, and heavy rain.
Relatively narrow streams of heavy showers can often affect the same places (usually the eastern suburbs) for an extended period of time, whilst the rest of Melbourne and surrounds stays dry. These showers are often heavy and can contain hail and squalls and significant drops in temperature, but they pass through very quickly at times with a rapid clearing trend to sunny and relatively calm weather and the temperature rising back to what it was before the shower. This occurs often in the space of minutes and can be repeated many times in a day, giving Melbourne a reputation for having "four seasons in one day", a phrase that is part of local popular culture and familiar to many visitors to the city.
Our very changeable weather nevertheless often gives us the pleasure of admiring spectacular rainbows like this double one, shot in our back yard!
This post is part of the Skywatch Friday meme.