It is the wind chill in the open rover that makes it feel cold. I always seem to have cold ears so I use a ski head band thing that goes over my ears. Light weight gloves are also helpful. By the time the sun is up for an hour or so it warms up and is very comfortable. A fleece jacket is what I use. The opposite happens in the afternoon game drive. Starts warm and then as it gets later and the sun starts to go down gets colder and you need to layer up.
