The Met Office has announced that the highest air temperatures will reach 37-40 C inland, 8-10 C above normal, starting from Saturday.
Temperatures on the coast will be between 32-35 C, again higher than seasonal averages.
The public is adviced to protect themselves against the effects of the sun and to guard against any action that could constitute a fire hazard, for example, barbeques and dropping unextinguished cigarette ends onto dry grass.
Winds will blow from the north and east, occasionally moderate.
Detay