July in Halifax is the rainiest and the warmest month of the year. In July, the weather in Halifax is typically warm. Average daily high temperature in July is about 18 degrees above zero. On average, Halifax has 18 rainy, 8 partly cloudy, 3 sunny, and 2 cloudy days in July. The rains are usually heavy. July as well as January, February, March, and April is considered the most uncomfortable time to visit Halifax.