Is this normal for humidity to do this?

[remicuties]

So I have a govee and I like watching my temperature and humidity with it and I noticed this trend of “spikes” going on.. I have a humidikit and have it set where under 30% humidity it will turn on, when it does the humidity goes up to the 40s and drops back down creating these spikes.
Really I don’t know if this is OK or if I should be concerned.
I am trying to keep it above 30 and below 40 for my emu eggs, this whole time before seeing humidity graphed out I thought it was a near constant number like temperature of course silly me

If it is normal.. which reading should I use? The max? Minimum? Or average? I’ve just been going off what it is each minute.
Also all four of my hygrometers read around the same % they are usually off around 1% give or take.
Also should note without this humidikit the incubator is basically dry hatching I have no water in the channels of my hovabator.

 

[FarmerGirl101]

This is super inconsistent. The humidity should be rather stable without many sharp changes in humidity levels. It seems like your incubator is not able to maintain a consistent and steady humidity level due to the sensor controlling the humidity by turning off and on again. I would think about switching to a regular humidity sensor and then maintaining the humidity by either having a damp paper towel or some standing water in say a bottle cap. If this does not result in a more consistent humidity then it is likely an incubator issue.

 

[Tex452]

I dry hatch in a high humidity area, humidity ranges from 35-55% inside the incubator, but usually hangs around 40%, when the chicks start hatching it has jumped up to 88% and as low as 56%, it just depends on how many fertile eggs were left in the incubator, I have been having a hatch rate in the 90% range.
I get my eggs from different people, and here lately the fertility rate has been down, probably about 60%are fertile, maybe the hotter temps here are causing it, if the eggs aren’t picked up soon enough the heat can affect them.