We are leaving for Mexico this weekend. I just checked the 10 day forecast for Mazatlan, Puerto Vallarta and Cabo San Lucas and all three predict thunderstorms for the entire 10 days. There goes our shore excursions. Hopefully it will be ok to go on shore. I thought I'd share this with anyone going to Mexico soon. Wish us luck.
I wouldn't worry to much. At this time of year there are frequent storms that last about 10 minutes in tropical climates. It actually is nice as it cools down the air a little.
3 of our 4 cruises had forecasts like that and we only had one overcast day that lasted all day. The rest of the time was wonderfully sunny with a minor shower that lasted less then 15 minutes maybe twice.