The output hit 13.5 billion cubic meters last month, up 10.6 percent year on year, compared with an increase of 6.6 percent in August, according to the NBS.
In the first three quarters of the year, 127.7 billion cubic meters of natural gas was produced, up 9.5 percent.
The country imported 71.22 million tonnes of natural gas during the period, up 10 percent year on year.
Meanwhile, raw coal output rose 4.5 percent year on year to 2.74 billion tonnes in the first nine months. In September alone, 320 million tonnes of raw coal was produced, up 4.4 percent year on year, slower than the 5-percent rise in August, according to the NBS.