The most flights from KE9 to SNU are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).
In terms of precipitation, rainfall in Santa Clara, Villa Clara ranges from 0.4 - 6.7 inches per month. September is typically the wettest month, when rainfall can reach 6.7 in. January is typically the driest time to visit Santa Clara, Villa Clara when rainfall is around 0.4 in.
If weather is an important factor for your trip to Santa Clara, Villa Clara, use this chart to help with planning. For those seeking warmer temperatures, July 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 February, when temperatures are typically at their lowest (around 69.8 F).