Mainly fine on Tuesday with cloud developing in the afternoon and possible isolated showers and a thunderstorm inland and in the mountains.
Southwesterly to northwesterly winds will be blowing, force three to four Beaufort, over moderate seas.
Temperatures will rise to 36 C inland, 26 C in the mountains, 30 C in the west and 32 C in the north, south and east coast.
The fire hazard is extremely high in all forest areas.