Temperatures will be lower and scattered showers are expected over the next few days as low pressure affects the area, the met office said.
Monday will be mainly cloudy and scattered showers, with the possibility of thunderstorms, are forecast in the afternoon.
Temperatures will be 24 C inland, around 21 C and 14 C in the mountains.
Tonight will be partly cloudy with the possibility of light scattered showers. Temperatures will drop 8 C inland, 10 C on the coast and 5 C in the mountains.
Tuesday will be cloudy at intervals with scattered showers and isolated thunderstorms.
Wednesday and Thursday will start off fine, but increased cloud in the afternoon will lead to isolated rain or thunderstorms.
Temperatures will edge down on Tuesday, rise a little on Wednesday and remain at the same levels on Thursday which is a little lower than average for the time of year.