Hi there again :)  I was wondering if any of you could give me any insight as to how hot, humid weather is going to affect the wedding cake I am currently constructing?  This is the first outdoors wedding cake I have done, and I am aware that the humidity is not going to be kind, but, I would love some advice or stories from you all about what I can expect.  A little description of the cake.....it is 3 tiers the bottom two are dummies, wrapped in fondant, I did them up on Monday and they are in a clean room waiting, the top tier will be edible cake, with american butter cream, I am using 1/2 butter, 1/2 shortening in hopes of it being more stable.  I usually use a mousseline butter cream, but I realize that is not going to hold up at all in the humidity.  Anyways, all three tiers will have black scrollwork painted up them with a simple cascade of gumpaste anemone's, that have been hanging and dry for a week, just waiting to be lustered tonight.  My biggest concern has been the scrollwork, and I opted to paint it on, rather than use royal or fondant, in hopes that it will have less chance of bleeding, or sliding.  Then my next concern is obviously for the fondant on the dummies and the cake itself......I'm terrified of it cracking and falling off the dummies and cake, in the humidity., then lastly, will my gumpaste flowers wilt a little in the temp and humidity??  I am going to insist that the cake is stored in the brides house (the wedding it outside at their house), in the air conditioning, until just before the meal and reception starts, at which time we will bring it out to the display table inside the tent.  That is where the cake will sit for the duration of the wedding.

The temps here are supposed to be 25 degrees, but feel like 35 degrees with the humitidy, and there is 70% chance of thunderstorms carrying 15-20mm of rain.......not a great day for a wedding.  :(

Anywho.....any advice or stories you could share would be wonderful and help to set my mind at ease if I have a little clue as to what may or may not happen. :)
Thank you very much!

SM

AWhere are you located? Your saying they are having an outside wedding in 25 degree weather??

Sorry.....we are in Ontario, Canada, and yes, the wedding is all outside at the home of the brides parents....there will be a tent, so that is a bonus considering it is supposed to rain and thunderstorm, and yes, the temperature is supposed to be 25 degrees celsius, but feel more like 35 degrees celsius with the humidity. :I  Not the best conditions for a wedding cake of any kind. :(
 

Alrighty so!!  I decided that I do not like "not knowing", so this morning I took a spare piece of cake that I had, frosted it with the frosting I am using for the wedding cake, covered it in fondant, stuck a spare petal for one of the flowers i did, painted a black stripe on the side and threw'er outside.  The temp here is about what it is going to be tomorrow for the wedding, so I thought I would give it a shot, and, to my complete amazement, it held up beautifully!!!  I put it outside on the deck at 12pm and the first sign of any damage began at about 5pm when it started to get slightly sticky.....I checked it at 6pm and it was getting a bit more sticky, but it was also getting really damp out because we have a storm on the way.  Then, by 8pm the cake was in my neighbours yard because the storm hit and the wind picked up and I had forgotten to bring it back inside.......now I have the song lyrics, "Someone left the cake out in the rain" going over and over and over in my head.