The met office has issued a yellow alert for Thursday saying that temperatures will soar to 41 C inland, 33 C on the west coast, 35 C on remaining coasts and 31 C in the mountains.
The extreme high temperature warning is valid from 12 noon to 4 pm.
Meanwhile, the Labour Ministry issued a warning to employees about the risk of heat stress while the forestry department said it was on red alert and urged everyone to be particularly careful.
The met office said Thursday’s weather will be mainly fine with increased localised clouds, particularly in the mountains.
On Wednesday temperatures reached a maximum of 40 C in Nicosia, 32 C in Limassol, Larnaca and Polis, 32 C in Paphos and Paralimni and 30 C in Prodromos.
Friday, Saturday and Sunday will be mainly fine with localised increased clouds at intervals. Temperatures will edge down gradually to average for the time of year.