In terms of precipitation, rainfall in Tawau ranges from 3.5 - 7.5 inches per month. July is typically the wettest month, when rainfall can reach 7.5 in. February is typically the driest time to visit Tawau when rainfall is around 3.5 in.
If weather is an important factor for your trip to Tawau, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).