The weather in Casco/Panama City, Panama, is GREAT! Usually, HOT! We are only 9 degrees for the equator. There are 4 months where we don't see any rain (Jan.-April) and then the 'green season' begins, but honestly May - Sept. is not bad at all.. Usually ~1 hour a day of rain.. Oct.-mid Dec. it rains a LOT. Temps flirt with 90 during the day and low 80's at night.