Tuesday will be mainly fine, with local increased clouds in the afternoon expected to lead to scattered showers and possible thunderstorms mainly in the mountains, inland and in the northeast.
The met office said temperatures will be 32 C inland, 30 C on the south coast, 29 C on remaining coasts and 23 C in the mountains.
Wednesday, Thursday and Friday will see increased clouds at intervals. Temperatures will edge up over the three days to a little above the average for the time of year.