Above average temperatures have been forecast for the holiday weekend, with the met service issuing a yellow weather warning for Saturday.
On Saturday, temperatures are expected to hit 41 degrees C inland, 32 on the western coast and in the mountains, and 34 on the rest of the coast.
The warning will be in effect from 12pm until 5pm on Saturday, and the met office said vulnerable groups are asked to be cautious.
The weather is not expected to change on Sunday, Monday, and Tuesday.
According to the met office, temperatures will remain at similar levels, which are above average.