If the forecast is looking grim, why not spend the day at Municipal Museum of Guayaquil? You'll be surprised just how many interesting facts you can learn about the past here.
When you've finished up at this collection of historical artifacts in Downtown Guayaquil, why not make your way to Malecon 2000, Banco Pichincha Monumental Stadium, and Mall del Sol Shopping Center? They're not too far from Municipal Museum of Guayaquil and also a hit with many travelers.