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Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Malaysia as you normally would.
In terms of precipitation, rainfall in Malaysia ranges from 4.7 - 11.0 inches per month. November is typically the wettest month, when rainfall can reach 11.0 in. June is typically the driest time to visit Malaysia when rainfall is around 4.7 in.
If weather is an important factor for your trip to Malaysia, 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 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).