January in Kaimana is the rainiest, the cloudiest, and the warmest month of the year. In January, the weather in Kaimana is typically warm. Average daily high temperature in January is about 25 degrees above zero. On average, Kaimana has 31 rainy days in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Kaimana.