July in Llandrindod Wells is the rainiest and the warmest month of the year. In July, the weather in Llandrindod Wells is typically warm. Average daily high temperature in July is about 16 degrees above zero. On average, Llandrindod Wells has 26 rainy, 4 sunny, and 1 cloudy day in July. The rains are usually heavy. July as well as January, February, March, and April is considered the most uncomfortable time to visit Llandrindod Wells.