A few times, I've flown continuously for a few hours each in hot, Florida, weather. The batteries will require time to cool down before they will charge, but I haven't noticed the P3P getting overheated. The motors get warm, but not hot. My Samsung Tab S tablet doesn't seem to have a problem with the heat. Since I did the "disable Google Play" trick, it's worked fine.
The requirement for the batteries to cool means I needed one more than I would have otherwise to keep the P3P in the air almost continuously. While using one to fly, I have two charging and one sitting in an electric cooler to cool. The cooler is one of those thermoelectric ones. It can only cool down the inside about 15 or 20 degrees F less than the ambient temperature. So, it's not like throwing the battery into a freezer.
-- Roger