Williams has said that he would prefer his child to grow up in the UK instead of Los Angeles, where the couple currently live.
He described children educated in LA schools as having "a massive sense of entitlement" and that they were "dull and dumb".
"I don't want to educate our baby in LA because I would much prefer her to have English sensibilities.
"I want the baby to have an English passport, we're still figuring out exactly whereabouts the baby is going to be brought up."
Williams and his wife, Ayda Field, a Turkish American actress, have been in a relationship for five years.
It is the first child for the couple who married two years ago.
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Apart from a few showers, mainly in the morning, there will be a good deal of dry and bright weather.
Any cloud and rain will clear eastwards initially, leaving brighter conditions but also a scattering of showers through the day.
Rain possibly heavy at times. Relatively mild overnight.