January in Olongapo is the windiest month of the year. In January, the weather in Olongapo is typically hot. Average daily high temperature in January is about 28 degrees above zero. On average, Olongapo has 14 cloudy, 7 partly cloudy, 5 rainy, and 5 sunny days in January. The rains are usually light. January as well as February is considered the most comfortable time to visit Olongapo.