The most Sounds Air flights from BHE to CHC are scheduled on a Friday (5 on average). You will have fewer Sounds Air flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).
In terms of precipitation, rainfall in Christchurch ranges from 40.0 - 60.0 inches per month. May is typically the wettest month, when rainfall can reach 60.0 mm. February is typically the driest time to visit Christchurch when rainfall is around 40.0 mm.
If weather is an important factor for your trip to Christchurch, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 6.0 C).