The maximum temperature is expected to be 33 degrees Celsius, while the minimum is expected to be 18 degrees Celsius,” the official said. The minimum was 19 degrees Celsius, three degrees below normal. The maximum temperature on Wednesday was 29.5 degrees Celsius, seven degrees below normal. By the middle of next week, the forecast says, the maximum temperature is expected to touch 40 degrees Celsius again. The average maximum temperature between April 16 and 20 is 37 degrees Celsius..