As temperatures rise, leaves are wilting faster

In April 2018, the day temperatures have increased rapidly in Panaji, Goa, and the plants are wilting during the day
The problem is severe for plants which are kept on the terrace, without any shelter
Earlier watering the plant would be sufficient to prevent wilting for 48 hours, now water is not sufficient
If more water is added to the pot, all the water is flowing away to the terrace floor, and the mud, nutrients from the soil are also flowing away
During march 2018, it rained heavily for one night, and the water was sufficient for 3-4 days for some plants

Rains are expected later in the week according to the weather forecast, however whether it will rain or not, only time will tell.