The river city was expected to reach a top of 32 on Sunday and come close to recording its warmest April day in 19 years, with the record sitting at 33.7 degrees in 2006.

Brisbane was on-track to challenge the April heat record just before midday when the temperature climbed to 30 degrees.

BoM meteorologist Lauren Pattie said the mercury was expected to rise by several degrees throughout Sunday afternoon and expected Brisbane to come close to breaking the record.

However, the heat wasn't as intense as predicted, with the river city only reaching a maximum of 30.4 degrees just after midday, so the record remained intact.

Ms Pattie said two high-pressure systems and dry north-north-westerly winds were responsible for the top temperature being two degrees higher compared to Saturday.

She said sea breezes had helped cool conditions on Saturday when the mercury reached 28, but similar winds were not expected on Sunday.

Looking ahead, the Queensland's capital was forecast to reach 32 degrees on Monday and 30 degrees on Tuesday, before dropping to tops in the high 20s for the rest of the week as an inland trough moved closer to the coast.

Brisbane's average maximum temperature for April was 27.1 and top temperatures so far this month were already about a degree higher than usual.