Predictive network traffic management in a computer network. Information relating to events likely to have an adverse impact on network traffic, based on predefined parameters of network performance, is collected from the Internet. Details that may be used to predict network traffic density is extracted from the collected events information, and a predicted traffic density, based on the details is generated. Based on the predicted network traffic density, a traffic pattern is generated. A best-matching traffic pattern template to the generated traffic pattern is identified in a store of traffic pattern templates. Based on the best-matching traffic pattern template, bandwidth on the network is provisioned via an SDN controller.