An extra 95 weekly services will run on Sydney's inner west light rail line from next Monday as the state government considers buying more trams to help ease crowding in carriages and on station platforms during peak periods.

Patronage has soared since a 5.6-kilometre extension of the line to Dulwich Hill in the inner west was opened three years ago, resulting in an increase in overcrowding on services.

The latest increase in services mean that trams will run every eight minutes on the weekdays between 7am and 8am instead of every 10 minutes. They are already operating every eight minutes at the "core peak time" of 8am to 9am.

So-called inter-peak services on Monday, Tuesday, Thursday and Friday will also run more frequently. Those between 10am and 2pm will be every 13 minutes, instead of every 15 minutes, and those between 2pm and 3pm every 12 minutes (changed from 15 minutes).