Gotta do laundry and hang it out to dry.
Gotta walk to the market before the water is pouring down the middle of the streets.
Gotta just get out and feel the sun on your skin.
Later in the day when it's pouring rain, wifi can get spotty. Sometimes the electricity goes off altogether.
If it gets cold and dreary, I've got a supply of wood ready for the fireplace.
It's nearly impossible to go all through the rainy season without getting caught in a downpour without an umbrella. When that happens, people stand inside stores or under shelter, watching for a tuk tuk, or just waiting for it to lessen a bit.
One of the best rains happened last year when we were at the hotel. It was evening, the electricity went out, it was dark. We stood on the balcony and watched the rain filling up the street as the parking lot across the way turned into a flood.
The main street of Panajachel during a light rain: