It was during very hot nights (after a day of about 30°C (85°F)). I do not know if it liked that the window was cooler because of the air conditioning, or the reason was that we had a little light lit so the window attracted bugs and the lizard was there waiting to catch them.
I also saw it sometimes watering the plants, but it didn't like the water did or the water scared it so the lizard ran out before I could photograph it.
Wall lizard in the window of my home (no banana nearby)