Weak low pressure is affecting the area.
Thursday will be partly cloudy with the possibility of isolated showers, mainly in the mountains, in the north and in areas inland.
Temperatures will rise to 33 C inland, around 29 C on the coasts and 25 C in the mountains.
Tonight will become mainly fine but there will be intervals of increased cloud. Temperatures will drop to 18 C inland and on the west and north coasts, around 20 C on the south and east coasts and 14 C on the higher mountains.
Friday and the weekend will be mainly fine with intervals of local increased cloud.
Temperatures will edge up to a little above average for the time of year.