Here on the south coast of Australia on the eastern side, our daylight hours vary from 9.4 hours of daylight around the winter solstice to 14.6 hours of light at the summer solstice.
The winter solstice is the shortest day of the year and the longest night. It is the day with the least hours of sunlight and the longest hours of darkness. This day is about the 22nd of June in the southern hemishpere.
The summer solstice is the opposite to the winter solstice. The summer solstice has the longest daylight hours and the shortest night hours of darkness. This falls on 22nd December. If you live in the northern hemishpere then these times are reversed.
This link is a great site to help you work out the number of daylight hours you have at any given time of the year.