In December, the weather in Aitutaki is typically warm. Average daily high temperature in December is about 26 degrees above zero. On average, Aitutaki has 22 rainy, 3 sunny, 3 cloudy, and 3 partly cloudy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Aitutaki.