The met office has issued a new yellow alert for Saturday, warning of extreme high temperatures.
It said the maximum temperature will rise to around 41 C inland and around 32 C on the mountains.
The yellow alert is in force from 12 noon to 5.00 pm. It said: Be aware that high temperatures are expected. Some health risks amongst vulnerable people e.g. the elderly and very young are possible.
Temperatures will be 33 C on the west coast and 35 C on the other coasts.
Temperatures are expected to edge down a little on Sunday and drop further on Monday to close to the average for the season