The Forestry Department issued a red alert as there is an increased risk of fires breaking out, it said in an announcement on Wednesday morning.
It urged the public to refrain from activities that may cause fires and to cooperate with authorities.
Whoever sees smoke or fire inside or near forests should contact the nearest Forest Station or call the Forestry Department at 1407 or the Fire Service at 112.
The met office has already issued an extreme high temperature warning for today, from 11 am to 4 pm and warned that some health risks among vulnerable people such as the elderly and very young are possible.
A hot air mass is affecting the area, bringing temperatures of 41 C inland on Wednesday.