In my experience they are much more tolerant of watering during the warm summer months. Last year and this Spring we had a LOT of rain, plus watering, and the Sans THRIVED over the summer. Pots do dry out much quicker outside and in the warmth.

We have extremely hot weather now where I live I must water mine at least once a week, and that means thoroughly.
I want the water to reach the roots that are in middle. I water once then go back and water again with some fertilizer in the water. We are having temperatures over 100F this is their growing season. I don't know what kind of soil you are using, I don't know the heat your are getting and some must be grown in almost full shade, do this gently, are they growing in clay pots, they dry out faster, the roots must not sit in water. When you take them from the house and instantly put them in the sun they just may burn. There is no short response I'm sorry. If you have a plastic label pull it out and it will show you if you need water, if not use a shop shick or a pencil, don't water the inside of the leaves, don't water over head, feed at least twice a month this time of the year, but don't over do it. It will depend on the size of you pot and how old the plant. You should repot if you haven't done so in the past three years. Brown/gray hard tips are normal,these plants will need less water, soft green tips they need more water, and if you are getting hurt from them put on the plastic peanuts to protect you, not the plants.