Christchurch weather in September
Long-run climate averages for Christchurch, New Zealand in September, plus what the forecast models say for the days ahead.
In September, Christchurch averages 15°C by day and 6°C at night. The wettest month is usually July.
September in Christchurch averages a daytime high of 15°C and an overnight low of 6°C, which reads as mild for this part of the world. Across the whole year Christchurch sees roughly 654 mm of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like - for that, see the live Christchurch forecast with every model compared and how much they currently agree.
Christchurch weather by month
what to expect in Christchurch through the yearHere is Christchurch's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Christchurch by season.
Bottom line: over the last 30 days the European model has been the most accurate forecast for Christchurch, scoring 88/100 on our CheckWeather Score, ahead of the German at 78. See the full NZ accuracy scoreboard for exactly how every model is tested.
Common questions
How warm is Christchurch in September?
Is September a good time to visit Christchurch?
Does it rain a lot in Christchurch in September?
Climate averages from ERA5 reanalysis. Model accuracy re-scored over a rolling 30 days. Page updated .