HOW TO ADJUST YOUR BAKING IN HUMID CONDITIONS
If it’s humit you can reduce the amount of liquid in your recipe slightly. Try reducing it by about 1/8th to 1/4. There is some trail and error in this process. If you would normally put in one half a cup of liquid, reduce it to as little as one quarter the amount.
If after mixing your dough looks too dry it’s okay to add a little more liquid.
This works on batter as well. However, when you find that the weather is dry you can do the opposite. Add more liquid to the recipe.