The climate of Stavanger is maritime and mild. It’s usually windy and the area is blessed with pleasant mild winters year around.
Summer:(April to July): In summers average high temperatures remain around 9-15 Degree Celsius while low temperatures dip to less than 5 Degree Celsius. The hottest month is July, when max temperature is about 19 degree Celsius. This is good season to visit Stavanger.
Winter :( November to January): Winter temperatures can dip to a couple of degrees below freezing. The coldest month is January. In this month temperature could be even minus 2 degree Celsius at night and be prepared for Rain, Snow, Thunderstorm and Fog. This time of the year is also off season for the visitors.
So, the best time to visit Stavanger is between the months of April to July.