Basics About Incubation Humidity

Incubator humidity is one of the most troubling topics for first-timers. Everyone has a different narrative to tell, resulting in a great deal of confusion amongst newbie poultry farmers. But, don’t worry. We are here with the ultimate guide about the correct humidity, incorrect humidity and much more.

What is the correct humidity for hatching?

Before we talk about numbers, let’s get one thing straight. Whenever you refer to incubation humidity, you should call it relative humidity.

Talking about the numbers… you should aim for 52% relative humidity. This is the target, not a steadfast rule that you must always follow. So, no need to lose it as soon as the sensor moves a little up or down. Relative humidity range is 50-65% for the first 18 days.

In the last 3 days,relative humidity level should be higher, in the range 70-85%.

Why should the relative humidity rise during hatching?

You must be wondering why relative humidity is higher in the final few days. This is because higher humidity helps to soften the eggshells a little, making it a bit easier to hatch.

Why is too much humidity dangerous?

Many first-timers think that a higher humidity level is okay. No. It is not okay. In fact, this is the worst mistake you could make.

Always keep in mind that embryos need both moisture and air. If there is too much moisture, i.e. humidity, embryos will “suffocate” and not grow fully inside the shells. Therefore, care must be taken on humidity levels while adding more water to the incubator.

Ahandy tip to determine correct humidity level is to candle the egg at different stages of incubation.


Last but not the least, you must remember a major rule of incubation humidity: Do not panic!

Panicking will just end up ruining the chicks and won’t let you enjoy the hatching process either. Make sure that you follow these guidelines we have shared and you’ll be good to go. Remember, it gets better with experience. Hatching eggs for the first few times can result in anxious nights for many. But once you do it a couple of times, you will learn all the ins and outs of hatching. We are also here to help you at each step of the process.

Have any questions? Feel free to send them in the comment box below!