You can also just look up what the dew point is on any particular day, and adjust your temperature.
In general, if you want to save money, you should set your aircon to the highest temperature you can tolerate. We typically operate at 26-28C at home here in Singapore, and our dew point is typically between 24-26C.
The modest reduction in air temperature from 30-33C outside feels amplified, because the aircon also reduces humidity. We also rely heavily on ceiling fans.
In general, if you want to save money, you should set your aircon to the highest temperature you can tolerate. We typically operate at 26-28C at home here in Singapore, and our dew point is typically between 24-26C.
The modest reduction in air temperature from 30-33C outside feels amplified, because the aircon also reduces humidity. We also rely heavily on ceiling fans.