The latest figures show there were 43 inmates on temporary release last Friday, mainly due to overcrowding.
The prison only has capacity for 296 offenders, but even after the temporary releases were given, there were still 301 inmates, with five sleeping on mattresses on the floor.
Last Thursday, there were 45 prisoners on temporary release, while a further 302 remained inside the prison.
Figures from October 23 revealed there were 53 offenders given temporary release — the highest number this year.
A spokesman for the Irish Prison Service said that 12 offenders jailed for drug crime were among the 45 released on Thursday.
The 45 also included the three jailed for murder threats or attempted murder, nine for thefts, six for burglaries, seven for road traffic offences, one for fraud, two for damage to property and the environment, and three for public order offences.
Under legislation, temporary release can be for a few hours or for a more extended period.