October in High Wycombe is the rainiest month of the year. In October, the weather in High Wycombe is typically warm. Average daily high temperature in October is about 14 degrees above zero. On average, High Wycombe has 13 rainy, 7 cloudy, 6 partly cloudy, and 5 sunny days in October. The rains are usually moderate. October as well as January, February, March, and April is considered the most uncomfortable time to visit High Wycombe.