A magnitude 4.3 earthquake occurred near Christchurch on Saturday.
AAP reports it struck about 35km south of Oxford at a depth of 10km at 8.01am.
GeoNet described the tremor as strong, with almost 500 people reporting they had felt it. There were no immediate reports of damage.
Central New Zealand was rocked by a magnitude 6.6 quake near Seddon on 16 August. Hundreds of aftershocks have since occurred.
A magnitude 7.1 earthquake occurred at Darfield in Canterbury at 4.35am on 4 September, 2010, causing severe damage to buildings. Its depth was 10km.