Booking with China Southern 35 days in advance of your planned departure date is, on average, the best time to get cheap flights from Penang to Xi'an. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
In terms of precipitation, rainfall in Xi'an ranges from 0.0 - 100.0 inches per month. September is typically the wettest month, when rainfall can reach 100.0 mm. January is typically the driest time to visit Xi'an when rainfall is around 0.0 mm.
If weather is an important factor for your trip to Xi'an, 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 26.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).
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