Using 'var' instead of explicitly stating the type

JetBrains Rider suggests I change

CircleData[] circles = CircleRegistry.ToDataArray();

CircleData[] circles = CircleRegistry.ToDataArray();

var circles = CircleRegistry.ToDataArray();

var circles = CircleRegistry.ToDataArray();

with the warning:

Use 'var' (elsewhere)

I understand this is just coding style, but is it considered standard practice to use

var

var

whenever possible in C#? As someone with a bit of C++ experience this feels weird to me