GeoNet said two of the quakes were of "strong" intensity. A magnitude-4.8 quake struck south of Martinborough at 10.58pm, followed by a magnitude-4.5 quake southwest of Wellington at 11.30pm.
GNS duty seismologist Caroline Little said the quakes were all part of the same event.
The 10 ranged from magnitude-1.6 up to 4.8 southeast of Martinborough, near Cape Palliser, in the space of a few hours.
As well as the 10 quakes, three "light" earthquakes were registered, with a 2.8-magnitude shake centred northwest of Gisborne at 10.51pm, a 2.7-magnitude quake east of Taupo at 10.59pm and a 3.4-magnitude quake southwest of Martinborough at 11.16pm.
While the shakes around Cape Palliser were further north than the majority of the aftershocks, they still fell within the aftershock region. It was "pretty standard" for an aftershock sequence, she said.
The likelihood of a big quake in the Wellington region was still pretty low, Little said.
However, it was five times more likely than before the Kaikoura quake.
Shakes like this were a good reminder to Wellingtonians, and the rest of the country, to get prepared in case a big one does strike.