When you are photographing in snow conditions there are situations where you’ll need to adjust the white balance so that snow is white and so it doesn’t have a blue cast.
On the other hand the colourcast you get when you shoot in the early morning or at sunset is desirable so don’t remove it or your sunsets and sunrises will be ruined.
To capture the colour of the light set the camera’s white balance setting to sunny day – the camera makes almost no adjustment to white balance when you do this. This makes it a good setting to use when capturing sunsets, for example.
However, when there is a colour cast that you don’t want to capture such as blue light on snow, then adjust the white balance setting in your camera to remove it. To warm up an image, set the white balance to shade as this adds a pink/ orange warming cast to the image and counteracts the blue/colder light.