The factory output had grown by 2.6% in September last year.
Industrial production growth fell to four-month low of 3.6% in September due to subdued performance by manufacturing and non-durable consumer goods segments.
Industrial output growth, measured in terms of the Index of Industrial Production (IIP), was also revised slightly downwards to 6.2% for August from provisional estimate of 6.4% released earlier.
The factory output had grown by 2.6% in September last year.
Industrial output was at 4% in April-September 2015 against 2.9% in the year-ago period,the data released by the Central Statistics Office (CSO) on Thursday showed.
The manufacturing sector, which constitutes over 75% of the index, grew by 2.6% in September, 2015, against 2.7% expansion in the same month last year.
The output of consumer non-durable goods contracted 4.6% in the month under review against a growth of 1.3% in September 2014.
The mining sector growth was at 3% in September 2015 against 0.1% in the same month last fiscal.
Capital goods output, a barometer of investment, grew at 10.5% against a growth of 12.3% in the same month last year.
Power generation grew at 11.4% in September against 3.9%, in the same month a year ago.
In terms of industries, 11 out of 22 groups in the manufacturing sector showed positive growth in September.
Overall consumer goods output grew by 0.6% in September 2015 against a contraction of 4% in the same month a year ago.
Consumer durables output grew at 8.4% in September 2015 against a contraction of 11.1% in the same month a year ago.
Basic goods output grew by 4% in September compared to 5% growth a year ago, whereas intermediate goods output grew by 2.1% in the month under review as compared to 2% growth in the same period last year.
During April-September period, manufacturing sector grew at 4.2% as compared to 2.2% growth in same period a year ago. Capital goods output grew by 7.9% as compared to 6% in the year-ago period.
Power generation grew 4.5% during April-September 2015, against 10.4% in same period a year ago. Mining sector grew at 1.5% during the period.
Overall consumer goods output grew by 2.4% compared to a decline in production by 2.4% in April-September 2014.
Consumer durables sectors grew by 7.6% compared to a contraction of 12.5% in corresponding period.
The output of consumer non-durable goods declined by 0.9% against a growth of 1.9% in April-September 2014.
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
 "Representational image")
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}
)
){kind=small}
){kind=small}
)
)
)
)
)
){kind=small}
){kind=small}
){kind=small}
){kind=small}
){kind=small}