No of course it's not an issue.
Temperatures flux depending on the load of the device, and other devices in the case increasing internal temperature.
Both temperatures are fine, and nothing to worry about at all.
Remember stuff needs to warm up too. So if you open your monitoring programe straight away it may read 30 as it's still getting to operating temperature. Then as you use it, it sits at a happy 35.
Your processor and graphics card will do the same.