In terms of precipitation, rainfall in Mata-Utu ranges from 5.9 - 15.0 inches per month. January is typically the wettest month, when rainfall can reach 15.0 in. August is typically the driest time to visit Mata-Utu when rainfall is around 5.9 in.
If weather is an important factor for your trip to Mata-Utu, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).