In terms of precipitation, rainfall in Rach Gia ranges from 0.0 - 11.8 inches per month. August is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit Rach Gia when rainfall is around 0.0 in.
If weather is an important factor for your trip to Rach Gia, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).