Schools are considering measures including closing early, allowing pupils to wear PE kit or rescheduling sports days to cope with rising temperatures next week. Councils across Wales say they are monitoring the situation and are in regular contact with schools.
It's understood that most schools would like to remain open but that the situation is being monitored in case the forecast worsens. In areas of England where there is a "red" danger to life heat warning, several schools have already announced they will close.
The Met Office has issued an "amber" warning for heat on Sunday, Monday and Tuesday in Wales stating that this could pose a danger to life, while temperatures may exceed the 2019 record of 38.7C.
