Brisbane has enjoyed its warmest start to August on record, however a cold front will bring cooler conditions from Tuesday, particularly at night. The first 18 days of the month have averaged close to 25 degrees, the first time this has occurred during August in the city's 126 years of records. Today is again expected to be a warm day, with a high of 27 degrees. However, a gusty cold front will move through on Tuesday morning, causing maxima to return to near average. Wednesday is likely to be the coolest of these, with just 21 degrees expected, which would be the coolest of the month so far. It will be the nights that will be the most noticeably cold though. On Wednesday and Thursday, the mercury will dip to just seven degrees in the city, which would make it the coldest pair of nights since June. In the west, it may even dip below freezing in the Ipswich area. Thankfully, for those that enjoy the warmth, the cool weather will be short lived. From Friday and into the weekend, maximums will be back into the mid 20's, while nights will return to near-average with sunny skies sticking around.