Hot and humid with a very good chance of rain at some point.
One suggestion, if you intend to do any video taping find out if you camcorder has a dew sensor that will automatically turn it off if moisture is sensed. If it does, you will need to keep the camera warm (wrapped in a towel) before you go out in the heat.
I saw a whole bunch of disappointed people this past Nov. who brought out their camcorder from their 65 Degree room to the 95
degree morning temperature(95% humidity) only to discover this feature shut down the operation of their camcorder. Needless to say the Captain did not go back and do the locks over again so they could get a shot later.Read about the building of the canal before you go , it makes you appreciate everything that much more.
The info about the camcorder is right, we just got back from the west carib. and we used a blowdryer to warm the camera before leaving the cabin and them wrapped it in a towl, or zip baggie and put into the camera bag. This worked perfectly.