Perth's hot summer is continuing but the heat is travelling east across the country with some of it making it to Adelaide and Melbourne next week. The first three days of February have been well above average for Perth and the western capital climbed to 38 degrees on Saturday and Sunday. This made it nine days in a row above 30 degrees and the run is likely to continue through next week. It will be cooler than the scorching temperatures experienced earlier in summer, however it continues what has been a hot season for Perth. The December average was 2.3 degrees above average and January 0.6 degrees above. Heat has started building over the interior as the monsoon trough heads north, and will continue to do so over the next few days. A ridge of high pressure has been directing this heat and persistent northeasterly winds over Perth. A trough will then move east, transporting this heat into the southern capitals. While those in the west sweltered, residents of Adelaide and Melbourne might be wondering what happened to summer. Over the last nine days Adelaide has averaged 5.4 below average and in Melbourne 2.3 below average for the past eight days. Summer is set to make a return though. Over the coming days it will gradually warm up with Adelaide forecast to reach 30 degrees from Tuesday until Thursday. Wednesday will be the hottest day for both Adelaide and Melbourne with maximums of 34 and 35 degrees respectively.