Wet weather benefits Argos, but discourages shoppers at the the home enhancement retailer.
Sales at Argos stores, open at least a year, rose 1.8% in the 13 weeks to September 1.
Homebase fared less well with sales down 8% for the same period, and on the same basis.
With July proving to be one of the wettest on record, consumers turned their backs on Homebase's offer of barbecues and garden goods. Argos, however, saw pent-up demand for televisions, stereos and general consumer electronics.
The group said its profitability was helped by cost cutting in the supply chain, and increased sourcing from abroad.
Terry Duddy maintained his cautious stance on the report of the mixed results.