It will become "appreciably cooler" on Monday morning, the observatory reminded the public in a special weather tip.
A cold front will cross the coast of Guangdong on Sunday night to Monday morning. Local winds will strengthen from the north and there will be a few rain patches.
Temperatures in the urban areas will fall from a maximum of around 30 degrees on Sunday to a minimum of around 17 degrees on Monday morning, and it will be a couple of degrees lower in the New Territories.
Members of the public should be aware of the change in temperature overnight, the observatory said.
Temperatures in the urban areas will fall from a maximum of around 30 degrees on Sunday to a minimum of around 17 degrees on Monday morning, and it will be a couple of degrees lower in the New Territories.
Members of the public should be aware of the change in temperature overnight, the observatory said.